JPS616191A - Surface coated non-oxide sintered body and manufacture - Google Patents
Surface coated non-oxide sintered body and manufactureInfo
- Publication number
- JPS616191A JPS616191A JP12332084A JP12332084A JPS616191A JP S616191 A JPS616191 A JP S616191A JP 12332084 A JP12332084 A JP 12332084A JP 12332084 A JP12332084 A JP 12332084A JP S616191 A JPS616191 A JP S616191A
- Authority
- JP
- Japan
- Prior art keywords
- sintered body
- oxide
- composition
- oxide sintered
- coated
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000000203 mixture Substances 0.000 claims description 25
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011521 glass Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims 1
- 230000003647 oxidation Effects 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000654 additive Substances 0.000 description 4
- 229910000174 eucryptite Inorganic materials 0.000 description 4
- IIPYXGDZVMZOAP-UHFFFAOYSA-N lithium nitrate Chemical compound [Li+].[O-][N+]([O-])=O IIPYXGDZVMZOAP-UHFFFAOYSA-N 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000021736 acetylation Effects 0.000 description 3
- 238000006640 acetylation reaction Methods 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 239000008279 sol Substances 0.000 description 3
- 239000011247 coating layer Substances 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical group O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 2
- 239000002195 soluble material Substances 0.000 description 2
- 239000012756 surface treatment agent Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 229910005091 Si3N Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000002198 insoluble material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
Landscapes
- Compositions Of Oxide Ceramics (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［発明の利用分野］
本発明は表面被覆非酸化物系焼結体及びその製造方法に
係り、特に耐醜化性を向」二した表面被覆非酸化物系焼
結体及びその製造方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a surface-coated non-oxide sintered body and a method for producing the same, particularly a surface-coated non-oxide sintered body with improved anti-disguising properties. and its manufacturing method.
［発明の背景］
近年、非酸化物系ファインセラミックス材料である窒化
珪素（’Ｓ １３Ｎ４）、ｌａ’化珪Ｊ−（Ｓ ｉＣ）
、サイアロン（Ｓｉａｌｏｎ）等が汀目を集めているか
、これらを高温構造材ネｌとして使用する場合、その醇
化腐食が重要な問題点となってきている。この問題を解
決するために、米国特Ｆｆ第３８１１９２９−号にょリ
ポロン添加表面処理゛５ｉ１ｉｃｏｎ ｎ１ｔｒｉｄ
ｅ ｃｅｒａｍｉ−ｃｓ ”が提案され、また公開特
許公報昭和５８年第９５６７９号によりＦｅ、Ｃｒ、Ｃ
ｏ、Ｎｉ、Ｃｕの酸化物とＳ ｒ ０２系よりなる被覆
をした°゛表面被覆反応焼結窒化珪素とその製造〃：°
゛が提案されているが、いずれも気孔の多い反応焼結Ｓ
ｒ ３Ｎ ４に対する耐醜化性の改良に関するもので
あり、その他の非酸化物系焼結体に対する耐酸化性の向
上については何ら検詞されていなかった。[Background of the Invention] In recent years, silicon nitride ('S 13N4) and la' silicon oxide J- (SiC), which are non-oxide fine ceramic materials, have been developed.
, Sialon, etc. are gathering sludge, and when these materials are used as high-temperature structural materials, oxidation corrosion has become an important problem. In order to solve this problem, US Pat.
"e cerami-cs" was proposed, and according to the published patent publication No. 95679 of 1981, Fe, Cr, C
°゛Surface coating reaction sintered silicon nitride coated with oxides of O, Ni, Cu and Sr02 system and its production: °
have been proposed, but all of them are reactive sintered S with many pores.
This document relates to improving the anti-disguising properties of r 3 N 4, and did not mention any improvement in the oxidation resistance of other non-oxide sintered bodies.
［発明の目的］
本発明はＦ記実状に鑑みてなされたものであり、その目
的とするところは、各種の非酸化物系焼結体の耐酸化性
を向上させる表面被覆非酸化物系焼結体及びその製造方
法を提供することにある。[Object of the Invention] The present invention has been made in view of the current situation of An object of the present invention is to provide a solid body and a method for producing the same.
［発明の構成及び作用］
本発明は、
非酸化物系焼結体の表面の少くとも一部をＡ文 ０ −
Ｓ １０ Ｌ ｌ ２０系よりなる組成物で被覆
したことを特徴とする表面被覆非酸化物系焼結体、
及び
非酸化物系焼結体表面にＡ文２０３Ｓ Ｉ Ｏ２、Ｌ
ｌ ２０系よりなる組成物をコーティングした後醇化性
雰囲気下１０００℃以上で加熱処理することにより該焼
結体表面にガラス相を形成することを特徴とする表面被
覆非酸化物系焼結体の製造方法、
を要旨とするものである。[Structure and operation of the invention] The present invention provides the following features: At least a part of the surface of a non-oxide sintered body is formed into an A pattern 0 -
A surface-coated non-oxide sintered body characterized by being coated with a composition consisting of S 10 L l 20 series, and A pattern 203S I O2, L on the surface of the non-oxide sintered body.
A surface-coated non-oxide-based sintered body, characterized in that a glass phase is formed on the surface of the sintered body by coating with a composition consisting of 1. The gist is the manufacturing method.
即ち４１酸化物系焼結体のうち反応焼結Ｓ ｉ３Ｎ ４
は一般に添加物を用いずに反応焼結されるため、高温に
おけるクリープ特性に優れているものの焼結体内部に１
５〜２５％の連続気孔が存在し酸化が焼結体の表面と内
部とから同時に進行する。・方常圧焼結ＳｉＮ、ホット
プレスｓ ｌ ３ Ｎ ｔ、 等の緻害なＳｉ３Ｎ４焼
結体は連＃ｌＡ！気孔が殆どないものの、添加物を使用
して成形されるため添加物の種順によっては表面を通し
ての酸素の拡散と第２層の低融点化により１４００°Ｃ
以上での醇化が暑しい。また、焼結体表面の１３００℃
近傍の醇化処理により上記表面にＳ ｉＯ２層を設ける
方法もとられているか、この時生しるＳ ｒ ０２はク
リストバライトであり２２０°Ｃでα−β変態に伴う急
激な体積変化でクラ・ンクを生じるので実質的に耐醇化
性を向上することはできない、また、耐化生成物と焼結
体本体との熱膨張率の違いによってもクラックが発生し
、これにより酸化が進行する。That is, among the 41 oxide-based sintered bodies, reaction sintered S i3N 4
Since it is generally reaction-sintered without using additives, it has excellent creep properties at high temperatures, but
There are 5 to 25% continuous pores, and oxidation proceeds simultaneously from the surface and inside of the sintered body.・Dense Si3N4 sintered bodies such as normal pressure sintered SiN, hot pressed sl3Nt, etc. are connected to #lA! Although there are almost no pores, it is molded using additives, so depending on the order of additives, oxygen can diffuse through the surface and the melting point of the second layer can be lowered to 1400°C.
The mellowness above is hot. In addition, the temperature of 1300℃ on the surface of the sintered body
A method of forming a SiO2 layer on the above surface by a nearby melting process may also be used.The Sr02 produced at this time is cristobalite, and the rapid volume change accompanying the α-β transformation at 220°C causes cracking. cracks occur due to the difference in coefficient of thermal expansion between the sintered product and the sintered body, which causes oxidation to progress.
これに対し、本発明は非酸化物系焼結体表面を焼結体本
体よりも熱膨張率の小さいＡｆｔ２０３−５１０２−Ｌ
ｉ２０系組成物で表面コーティングするもノテある。Ａ
５Ｌ２０３−３１ｏ２−Ｌ ｉ２０系組成物はユークリ
プタイト（Ｌｌｏ−Ａ文、０３・２ Ｓ ｒ ０２ ）
近傍の組成を有するため熱］膨張率が非常に小さく、し
かも１４００℃近傍の融点を有しかつガラス化し易い上
に、温度変化に（ｆう体積変化も極めて小さいため１６
００℃以下の熱サイクルにおいてクラックを発生させる
ことのない安定なガラス層を形成する材料である。In contrast, the present invention uses Aft203-5102-L, which has a smaller coefficient of thermal expansion than the sintered body, on the surface of the non-oxide sintered body.
There is also a note on surface coating with i20 type composition. A
5L203-31o2-L i20-based composition is eucryptite (Llo-A text, 03.2 Sr 02)
It has a very low coefficient of thermal expansion due to its composition in the vicinity of
It is a material that forms a stable glass layer that does not generate cracks during thermal cycles at temperatures below 00°C.
本発明において、表面被覆非酸化物系焼結体の製造方法
としては、Ａ文 ＯＳ １０２ −Ｌ ｌ ２０系組成
物の溶液を作成し、この溶液中で非酸化物系焼結体を大
気中又は真空中で浸漬するか又はこの溶液を塗布し、乾
燥後１０００°Ｃ以Ｆ、好ましくは１ｏｏｏ°Ｃ以上１
５００ ”Ｃ以下、で熱処理するか、あるいは使用条件
下で熱処理することにより、該焼結体表面にガラス層の
被覆層を形成させる方法等が用いられる。このような本
発明の製造方法で特徴的なことはコーティング層が低熱
膨張性材才Ｉであるため体積変化が少なく、また複雑異
形形状の焼結体の表面被覆も可能であることである。In the present invention, as a method for producing a surface-coated non-oxide sintered body, a solution of a OS 102-L l 20-based composition is prepared, and the non-oxide sintered body is exposed to air in this solution. Or immerse in vacuum or apply this solution and after drying at 1000°C or higher, preferably 100°C or higher 1
A method is used in which a coating layer of a glass layer is formed on the surface of the sintered body by heat treatment at 500 "C or less or under usage conditions.The manufacturing method of the present invention has the following characteristics: The important thing is that since the coating layer is made of a material with low thermal expansion, there is little change in volume, and it is also possible to coat the surface of a sintered body with a complex irregular shape.
Ａｌ２Ｏ３−３ＩＯ２−Ｌｉ２０系の原ｌとしては、Ａ
ｎ Ｏ源はＡＭ （Ｎｏ３）３．Ａ文ｃｉ、。As the raw material of Al2O3-3IO2-Li20, A
nO source is AM (No3)3. A sentence ci,.
Ａ又２０３．Ａ文（ＯＨ）３ （アルミナケル、アルミ
ナケル−初なとか、ＳｉＯ源はＳ ＋ ０２と水酸基と
をイｊするンリカケルあるいはシリカゾル、Ｌ ｉ 、
、Ｏｔ、はＡ Ｎ２０３と同様Ｌ ｉＮ Ｏ３、ＬｉＣ
文、Ｌ Ｉ ２０等の使用か可能である。これらの原料
粒度は水溶性材料である場合には特に問わないか、水不
溶性材料である場合には粒径１１００ｐ以下、好ましく
は１０ｇｍ以下が望ましい。Amata203. A sentence (OH) 3 (alumina kel, alumina kel-first, SiO source is silica sol or silica sol containing S + 02 and hydroxyl group, Li,
, Ot, is the same as A N203, L iN O3, LiC
It is possible to use sentences such as L I 20. The particle size of these raw materials is not particularly limited when the material is a water-soluble material, but when the material is a water-insoluble material, the particle size is desirably 1100p or less, preferably 10gm or less.
」−記原料のうち最も好ましいＡ文０− Ｓ ｒ ０２
−ＬｉＯ系組成物原料として、Ａ文（Ｎ０３）３（又は
アルミナゾル） −５ｉＯゾル−Ｌ ｒ Ｎ Ｏ３の如
き水溶性材ネ゛１ないしはゾル状混合物が挙げられるが
、Ａ Ｉ Ｏ−Ｓ ｉＯ２−Ｌ ｌ ２０系′の水不
溶性泥漿物スラリーでも十分使用可能である。”-most preferred A sentence 0- S r 02 among the listed raw materials
-LiO-based composition raw materials include water-soluble materials or sol-like mixtures such as Amon (N03) 3 (or alumina sol) -5iO sol-L r N O3, but AIO-S iO2- A water-insoluble slurry of the L l 20 series can also be used satisfactorily.
ｃ発９ノの実施例ｊ
以下に本発明を実施例により更に詳細に説明するが、本
発明はその要旨を超えない限り、以下の実施例に限定さ
れるものではない。EXAMPLE J OF C-9-9 The present invention will be explained in more detail with reference to examples below, but the present invention is not limited to the following examples unless it exceeds the gist thereof.
なお丁記実施例において、 Ａ文２０３→Ａ Ｓ ＩＯ２→５ Ｌ１２０ →Ｌ とそれぞれ略記する。In addition, in the example mentioned above, A sentence 203 → A S IO2→5 L120 → L Each is abbreviated as
実施例１
アルミナゾル、コロイタルシリ力、硝酸リチウムを用い
てＡｏ−３−Ｌ系、４Ａ−５系、Ｓ−Ｌ系、Ａ−Ｌ系組
成物の各種溶液を作成した。Ａ−３−Ｌ系組成物として
は１８Ａ−５−Ｌ、Ａ−１８５−Ｌ、Ａ−３−１８Ｌ、
Ａ−２Ｓ−Ｌの４組成、Ａ−５系の組成物としてはＡ−
５，Ｓ−Ｌ系の組成物としてはＳ−Ｌ、Ａ−Ｌ系の組成
物としてはＡ−Ｌの組成の溶液ないしはツル状の液体（
以下「溶液Ｊという、）をそれぞれ作成した。Example 1 Various solutions of Ao-3-L, 4A-5, S-L, and A-L compositions were prepared using alumina sol, colloidal silicone, and lithium nitrate. A-3-L compositions include 18A-5-L, A-185-L, A-3-18L,
4 compositions of A-2S-L, A-5 compositions
5. An S-L composition is a solution or a vine-like liquid (
Hereinafter referred to as "Solution J") were prepared.
この溶液を蒸発乾固させ、得られる粉末を電気炉に”ｃ
’１ｏｏｏ℃、１２５０℃、１５．００”Ｃで各々３０
分保持した後、放冷Ｘ線回折による相の同定を行なった
。その結果、第１表の如＜Ａ−３−Ｌ系の３元素系のも
のはすべてガラス、ユークリプタイト又はＡ−５−Ｌ系
の低熱膨張性鉱物相を生じ、表面処理剤として適してお
り、一方Ａ−３系、Ｓ−Ｌ系、Ａ−Ｌ系の２元素系のも
のは生成相からｒ１断じて表面処理剤として不的確であ
ることか判明した。This solution is evaporated to dryness, and the resulting powder is placed in an electric furnace.
'1ooo℃, 1250℃, 15.00"C respectively 30
After holding the sample for a few minutes, the phase was identified by cooling X-ray diffraction. As a result, as shown in Table 1, all three-element A-3-L-based minerals produce glass, eucryptite, or A-5-L mineral phases with low thermal expansion, making them suitable as surface treatment agents. On the other hand, it has been found that two-element systems such as A-3 system, S-L system, and A-L system are completely inappropriate as surface treatment agents based on the generated phase.
第１表 組成物組成物の加？８処理生成物実施例２
実施例１で作成したＡ−Ｓ−Ｌ系のユークリプタイト
（Ａ−２３−Ｌ）組成の溶液にバインダーとしてポリビ
ニルアルコール（ＰＶＡ）１％を添加した溶液を作成し
た。この溶液にφ１０Ｘ５０１ （ｍｍ）の反応焼結Ｓ
】３Ｎ４を浸漬し、得られる表面被覆焼結体に温度１０
００℃、１５００℃、時間０〜１００時間で酢化テスト
を行なった。同様にして表面を被覆していない反応焼結
Ｓｉ３Ｎ４の酢化テストを行なった。その結果第１図（
１０００℃の場合）及び第２図（１５００℃の場合）に
示すようｔこ、本発明により表面コーティングした焼結
体（第１図及び第２図の曲線ｌ）のＩ６を酢化性は表面
コーティングしていない焼結体（同曲線２）に比較して
著しく向上していることが認められた。Table 1 Composition Addition of composition? 8 Processed Product Example 2 A-SL-based eucryptite prepared in Example 1
A solution was prepared by adding 1% polyvinyl alcohol (PVA) as a binder to a solution having the composition (A-23-L). A reaction sintered S of φ10×501 (mm) was added to this solution.
] 3N4, and the resulting surface-coated sintered body was heated to a temperature of 10
Acetylation tests were conducted at 00°C and 1500°C for 0 to 100 hours. Similarly, an acetylation test was carried out on reactive sintered Si3N4 whose surface was not coated. The results are shown in Figure 1 (
As shown in FIG. 2 (in the case of 1000°C) and FIG. A remarkable improvement was observed compared to the uncoated sintered body (curve 2).
実施例３
実施例２で作成したＡ−５−Ｌ系溶Ｍ （ＰＶＡ添加）
にφｌ ＯＸ’５０又（ｍｍ）の常圧焼結Ｓ ｉ３Ｎ
４を浸漬した後、得られる表面被覆焼結体を温度１２０
０℃及び１４００℃で１００時間、酢化テストに供した
。その結果、１２００℃でのテストでは常圧焼結Ｓｉ３
Ｎ、が緻Ｖ、質であるため表面接菌によるＺか認められ
なかったか。Example 3 A-5-L solution M prepared in Example 2 (PVA addition)
pressureless sintered Si3N with φl OX'50 (mm)
4, the resulting surface-coated sintered body was heated to a temperature of 120°C.
It was subjected to an acetylation test at 0°C and 1400°C for 100 hours. As a result, in a test at 1200℃, pressureless sintered Si3
Since N is fine V, quality, Z was probably caused by surface bacteria or was not observed.
１４００℃でのテストでは第２表の如く、本発明により
表面被覆処理を行なったものは、処理を行なわなかった
もの１こ比較して明らかに耐散化性に差か認められた。In the test at 1400°C, as shown in Table 2, there was a clear difference in scattering resistance between the samples subjected to the surface coating treatment according to the present invention and those not subjected to the treatment.
川・・・ｍ ｇ ／ ｃ ｍ’ （屯位血植当りの酸化
増車）実施例４
ユークリプタイト（Ａ−２３−Ｌ）組成物のＡ源として
アルミナゾル（化合物）、Ｓ源としてＳ １０２粉末（
粒Ｐｉ： ｌ Ｏａ ｍ以ド、純度９９χ）、Ｌ源とし
てＬｉＮＯ３を用い、Ａ−５−Ｌ系組成物のスラリー（
組成Ａ−２３−Ｌ）を作成した。River...m g/cm' (oxidation increase per blood transplant) Example 4 Alumina sol (compound) as A source of eucryptite (A-23-L) composition, S 102 powder as S source (
Grain Pi: less than 1 Oa m, purity 99χ), using LiNO3 as the L source, slurry of A-5-L composition (
Composition A-23-L) was created.
このスラリーにφ１ＯＸ５０ｕの反応焼結Ｓ ｌ ３Ｎ
４ を浸漬し、常温乾燥後１５００°Ｃ１２時間で熱
処理した後、１５００℃、１００時間の大気中酸化テス
トを行なった。その結果、第３表に示すように溶液状組
成物と同様スラリーでも、表面コーティングした焼結体
の耐融化性の著しい向りが認められた。In this slurry, φ1OX50u reaction sintered S l 3N
4 was immersed, dried at room temperature, heat treated at 1500°C for 12 hours, and then subjected to an oxidation test in the air at 1500°C for 100 hours. As a result, as shown in Table 3, it was observed that the melting resistance of the surface-coated sintered body significantly improved with the slurry as well as with the solution composition.
川・・・ｍ ｇ ／ ｃ ｍ’ （単位面積当りの酸化
増早）［発明の効果］
以−に詳述した通り、本発明によりＡ’ｌ、０３−５
ｒ ＯＬ ｌ ２０系組成物を非酸化物系焼結体に被覆
処理した焼結体は、表面に緻富で低熱膨張性のガラス層
が形成されるため、表面からの散票の拡散も少なく極め
て４Ｍ化性に優れる。しかも多孔質な反応焼結体のみで
なく添加物を使用した緻密質５１３Ｎ４についても１４
００℃以ｌ、の高温において優れた耐酸化性を付す−す
ることができる。River...m g / cm' (oxidation increase per unit area) [Effects of the invention] As detailed below, the present invention provides A'l, 03-5
r OL l A sintered body made by coating a non-oxide sintered body with a 20-based composition forms a dense glass layer with low thermal expansion on the surface, so scattering of particles from the surface is extremely low. Excellent 4M property. Moreover, not only the porous reaction sintered body but also the dense 513N4 using additives
It can provide excellent oxidation resistance at high temperatures of 00°C or lower.
第１図及び第２図はそれぞれ１ｏｏｏ℃加熱及び１５０
０℃加熱による醸化テスト結果を示すグラフであり、横
軸は加熱処理時間、縦軸は単位面積当りの醇化増ら；を
示す。
１・・・表面被覆処理品
２・・・未処理品Figures 1 and 2 show heating at 100°C and heating at 150°C, respectively.
This is a graph showing the results of a fermentation test by heating at 0°C, where the horizontal axis shows the heat treatment time and the vertical axis shows the increase in melting per unit area. 1...Surface coating treated product 2...Untreated product
Claims (3)
２Ｏ＿３−ＳｉＯ＿２−Ｌｉ＿２Ｏ系よりなる組成物で
被覆したことを特徴とする表面被覆非酸化物系焼結体。(1) At least a part of the surface of the non-oxide sintered body is Al_
A surface-coated non-oxide sintered body characterized by being coated with a composition consisting of 2O_3-SiO_2-Li_2O system.
物は熱処理により非酸化物系焼結体の表面に融着された
Ａｌ＿２Ｏ＿３−ＳｉＯ＿２−Ｌｉ＿２Ｏ系のガラス相
であることを特徴とする特許請求の範囲第１項に記載の
表面被覆非酸化物系焼結体。(2) The Al_2O_3-SiO_2-Li_2O-based composition is an Al_2O_3-SiO_2-Li_2O-based glass phase fused to the surface of the non-oxide sintered body through heat treatment. The surface-coated non-oxide-based sintered body described in 2.
＿２−Ｌｉ＿２Ｏ系よりなる組成物をコーティングした
後酸化性雰囲気下１０００℃以上で加熱処理することに
より該焼結体表面にガラス相を形成することを特徴とす
る表面被覆非酸化物系焼結体の製造方法。(3) Al_2O_3-SiO on the surface of the non-oxide sintered body
_2-A surface-coated non-oxide-based sintered body, characterized in that a glass phase is formed on the surface of the sintered body by coating the composition with a Li_2O-based composition and then heat-treating it at 1000°C or higher in an oxidizing atmosphere. manufacturing method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12332084A JPS616191A (en) | 1984-06-15 | 1984-06-15 | Surface coated non-oxide sintered body and manufacture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12332084A JPS616191A (en) | 1984-06-15 | 1984-06-15 | Surface coated non-oxide sintered body and manufacture |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS616191A true JPS616191A (en) | 1986-01-11 |
| JPS6360000B2 JPS6360000B2 (en) | 1988-11-22 |
Family
ID=14857634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12332084A Granted JPS616191A (en) | 1984-06-15 | 1984-06-15 | Surface coated non-oxide sintered body and manufacture |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS616191A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385190A (en) * | 1986-09-19 | 1988-04-15 | 金井 宏之 | Steel cord |
| CN105038336A (en) * | 2015-07-10 | 2015-11-11 | 佛山东鹏洁具股份有限公司 | Inorganic nano paint coated on substrate surface, preparation method therefor and using method thereof |
-
1984
- 1984-06-15 JP JP12332084A patent/JPS616191A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6385190A (en) * | 1986-09-19 | 1988-04-15 | 金井 宏之 | Steel cord |
| CN105038336A (en) * | 2015-07-10 | 2015-11-11 | 佛山东鹏洁具股份有限公司 | Inorganic nano paint coated on substrate surface, preparation method therefor and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6360000B2 (en) | 1988-11-22 |
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