JPH01316468A - Heat-shielding coating method - Google Patents
Heat-shielding coating methodInfo
- Publication number
- JPH01316468A JPH01316468A JP14859788A JP14859788A JPH01316468A JP H01316468 A JPH01316468 A JP H01316468A JP 14859788 A JP14859788 A JP 14859788A JP 14859788 A JP14859788 A JP 14859788A JP H01316468 A JPH01316468 A JP H01316468A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- metal
- ceramic
- bonding layer
- binding
- 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.)
- Pending
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 9
- 239000010410 layer Substances 0.000 claims abstract description 69
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000000919 ceramic Substances 0.000 claims abstract description 26
- 239000011247 coating layer Substances 0.000 claims abstract description 9
- 239000002923 metal particle Substances 0.000 claims abstract description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 13
- 229910052726 zirconium Inorganic materials 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 6
- 230000001404 mediated effect Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 239000000758 substrate Substances 0.000 abstract description 7
- 230000001678 irradiating effect Effects 0.000 abstract description 6
- 230000035939 shock Effects 0.000 abstract description 5
- 238000007751 thermal spraying Methods 0.000 abstract description 4
- 239000011230 binding agent Substances 0.000 abstract description 3
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 7
- 239000011261 inert gas Substances 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004942 thermal barrier coating method Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Landscapes
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Description
【発明の詳細な説明】 ［産業上の利用分野］ 本発明は熱遮蔽コーティング方法に関するものである。[Detailed description of the invention] [Industrial application field] The present invention relates to a thermal barrier coating method.
［従来の技術］
従来、金属等の表面をセラミックスにより被覆して高温
条件下における耐温度特性を向上させたり、又、耐食性
や耐摩耗性を向上させるために、ノズルからセラミック
スの粒子を金属表面に向は高速で吹き出させてセラミッ
クスの粒子を金属表面に食い込ませることによりセラミ
ックスの膜を形成するいわゆる溶射を行っていた。ある
いはこのとき、セラミックスの粒子をあらかじめ加熱し
て溶融状態にしておきセラミックスの粒子をより強固に
食い込ませることも行っていた。[Prior Art] Conventionally, the surface of metal, etc., has been coated with ceramics to improve its temperature resistance under high-temperature conditions, and ceramic particles have been applied to the metal surface from a nozzle in order to improve the corrosion resistance and wear resistance. Nimuko was using so-called thermal spraying, which forms a ceramic film by blowing ceramic particles at high speed and digging into the metal surface. Alternatively, at this time, the ceramic particles were heated in advance to be in a molten state so that the ceramic particles could bite more firmly.
［発明が解決しようとする課題］
しかしながら、上記溶射による熱遮蔽コーティング方法
では、単に金属表面にセラミックス粒子を付着させて膜
を形成しているだけなので、金属とセラミックスとの境
界層が明瞭であり、従って結合力が弱く熱的な力や機械
的な力によりセラミックスの膜が剥離し易いという問題
があった。[Problems to be Solved by the Invention] However, in the above thermal spraying thermal shield coating method, ceramic particles are simply attached to the metal surface to form a film, so the boundary layer between the metal and the ceramic is clear. Therefore, there was a problem in that the bonding force was weak and the ceramic film was easily peeled off by thermal or mechanical force.
又、このため、近年では、金属基材の表面に、基材とセ
ラミックスとの中間的物質を溶射することにより結合層
を形成し、この結合層の上面にセラミックス層を溶射す
ることが種々検討されているが、この方法においても結
合層とセラミックス層との密着性が十分でなく、熱衝撃
などによってセラミックス層が剥離してしまう間゛ 題
を有していた。For this reason, in recent years, various studies have been conducted to form a bonding layer on the surface of a metal substrate by thermally spraying an intermediate material between the substrate and ceramics, and to thermally spray a ceramic layer on top of this bonding layer. However, even in this method, the adhesion between the bonding layer and the ceramic layer was insufficient, and the ceramic layer had the problem of peeling off due to thermal shock or the like.
本発明は、金属に対し、熱衝撃等に対してより強い結合
力を得られるセラミックス層を形成するようにした熱遮
蔽コーティング方法を提供することを目的としている。SUMMARY OF THE INVENTION An object of the present invention is to provide a heat shielding coating method for forming a ceramic layer on metal that can obtain stronger bonding strength against thermal shock and the like.
［課題を解決するための手段］
本発明は基材表面にコーティングされた結合層の上面に
、ジルコニウム等の活性金属粒子を塗布して塗布層を形
成し、該塗布層を、不活性雰囲気にて前記結合層にわず
かにかかる程度にレーザー照射することにより結合層に
冶金的に接合する金属層を形成し、その後膣金属層を、
酸素介在雰囲気にて前記結合層との境界付近までレーザ
ー照射することによりセラミックス化することを特徴と
する熱遮蔽コーティング方法にかかるものである。[Means for Solving the Problems] The present invention involves coating active metal particles such as zirconium on the upper surface of a bonding layer coated on the surface of a base material to form a coated layer, and placing the coated layer in an inert atmosphere. A metal layer that is metallurgically bonded to the bonding layer is formed by irradiating the bonding layer with a laser to a slight extent, and then a vaginal metal layer is formed.
The present invention relates to a heat shielding coating method characterized in that ceramics are formed by laser irradiation to the vicinity of the boundary with the bonding layer in an oxygen-containing atmosphere.
［作 用］
本発明では、金属基材表面に形成した結合層上にジルコ
ニウム等の活性金属粒子を塗布し、不活性雰囲気下でレ
ーザー照射して溶融させることにより結合層と冶金的に
結合した金属層を形成し、更に該金属層を酸素介在雰囲
気下でレーザー照射することにより結合層との境界付近
まで酸化を行わせてセラミックス層を形成する。[Function] In the present invention, active metal particles such as zirconium are coated on the bonding layer formed on the surface of the metal base material, and are metallurgically bonded to the bonding layer by melting the active metal particles by irradiating the particles with a laser in an inert atmosphere. A metal layer is formed, and the metal layer is irradiated with a laser in an oxygen-containing atmosphere to oxidize up to the vicinity of the boundary with the bonding layer to form a ceramic layer.
［実 施 例］ 以下、本発明の実施例を図面を参照しつつ説明する。[Example] Embodiments of the present invention will be described below with reference to the drawings.
第１図〜第４図は本発明の一実施例であり、金属基材ｌ
上に熱遮蔽のためのジルコニア（ＺｒＯ２）等のセラミ
ックス２をコーティングする場合を示している。FIGS. 1 to 4 show an embodiment of the present invention, in which the metal base l
A case is shown in which a ceramic 2 such as zirconia (ZrO2) is coated on top for heat shielding.
第１図で示すように、基材ｌの表面上に、まずＭＣｒＡ
ｊＸ （Ｍ：Ｎｉ％Ｃｏ、Ｆｅなど、Ｘ ： Ｙ ％
Ｚ ｒ ｓ Ｈｆなど）に代表される物質による溶射等
によって結合層（下地層）３をコーティングする。As shown in FIG. 1, first, MCrA
jX (M: Ni%Co, Fe, etc., X: Y%
The bonding layer (underlying layer) 3 is coated by thermal spraying or the like using a substance such as Z r s Hf, etc.).
上記結合層３の上面に、第２図に示すように、金属ジル
コニウム（Ｚ ｒ）４粉末（一部ｙ２ ｏ３ ）及び有
機樹脂等の所要の粘着性と加熱による揮発性を有したバ
インダー５を混練したものを塗布して塗布層６を形成す
る。As shown in FIG. 2, a binder 5 such as metal zirconium (Zr)4 powder (partially y2o3) and an organic resin, which has the required adhesiveness and volatility when heated, is placed on the upper surface of the bonding layer 3. The kneaded mixture is applied to form a coating layer 6.
次に、第３図に示すように、不活性ガス雰囲気において
、００２等のレーザー装置７により前記結合層３に少し
かかる程度に照射を行って、金属ジルコニウム４を溶融
させることより金属ジルコニウム層８を形成する。Next, as shown in FIG. 3, in an inert gas atmosphere, the bonding layer 3 is irradiated by a laser device 7 such as 002 to melt the metal zirconium 4, thereby melting the metal zirconium layer 8. form.
このとき、金属ジルコニウム４は不活性ガス雰囲気下で
の溶融により下地金属層である結合層３と冶金的に接合
されるので、結合層３と金属ジルコニウム層８との結合
力は強固となる。At this time, the metal zirconium 4 is metallurgically bonded to the bonding layer 3, which is the base metal layer, by melting in an inert gas atmosphere, so that the bonding force between the bonding layer 3 and the metal zirconium layer 8 becomes strong.
次に、第４図に示すように、大気中（或いは５〜６０％
０２＋不活性ガス中等の酸素介在下）において、前記レ
ーザー装置７により、金属ジルコニウム層８を結合層３
との接合部直上まで溶融するように照射を行ってセラミ
ックス（ジルコニアＺｒ０２）層２を形成する。Next, as shown in Figure 4, in the atmosphere (or 5 to 60%
02+ in the presence of oxygen such as an inert gas), the laser device 7 converts the metal zirconium layer 8 into the bonding layer 3.
A ceramic (zirconia Zr02) layer 2 is formed by irradiating it so as to melt it to just above the joint with the substrate.
これにより、結合層３とセラミックス層２とは、厚さ寸
法！ （ただし、！は、ゼロに近い厚さ）を有する金属
ジルコニウム層８の介在によって強固な結合力が保持さ
れ、且つ最外側のセラミックス層２への組成変化は傾斜
的となるので、耐熱衝撃性、耐剥離性に優れたセラミッ
クスコーティング層が得られ、よって高い安定した熱遮
蔽特性が得られる。又このとき、前記したように組成変
化が傾斜的になるので、金属ジルコニウム層８の照射を
結合層３との境界部に達するように行っても良い。As a result, the bonding layer 3 and the ceramic layer 2 have the same thickness! (However, ! is a thickness close to zero) A strong bonding force is maintained by the interposition of the metal zirconium layer 8, and the composition change to the outermost ceramic layer 2 is gradient, so that thermal shock resistance , a ceramic coating layer with excellent peeling resistance can be obtained, and therefore highly stable heat shielding properties can be obtained. Further, at this time, since the compositional change becomes gradient as described above, the irradiation of the metal zirconium layer 8 may be performed so as to reach the boundary with the bonding layer 3.
尚、本発明の熱遮蔽コーティング方法は、上述の実施例
にのみ限定されるものではなく、活性金属粒子としては
ジルコニウム以外にチタン等を用いても同様に実施し得
ること、その池水発明の要旨を逸脱しない範囲内におい
て種々変更を加え得ることは勿論である。It should be noted that the heat shielding coating method of the present invention is not limited to the above-mentioned embodiments, and can be similarly carried out using titanium or the like other than zirconium as the active metal particles. Of course, various changes can be made within the scope of the invention.
［発明の効果］
以上説明したように、本発明の熱遮蔽コーティング方法
によれば、結合層に対し、金属層を冶金的に接合させ、
且つ金属層の一部を結合層との境界部に残すようにして
セラミックス層を形成するようにしているので、耐熱衝
撃性、耐剥離性に優れた金属基村上へのセラミックスコ
ーティングを行うことができる。[Effects of the Invention] As explained above, according to the heat shield coating method of the present invention, the metal layer is metallurgically bonded to the bonding layer,
In addition, since the ceramic layer is formed by leaving a part of the metal layer at the boundary with the bonding layer, it is possible to apply ceramic coating on the metal substrate with excellent thermal shock resistance and peeling resistance. can.
第１図〜第４図は本発明の一実施例を示すもので、第１
図は金属基材上に結合層を形成した状態図、第２図は結
合層上に塗布層を塗布した状態図、第３図は塗布層をレ
ーザー照射して金属層を形成している状態図、第４図は
金属層をレーザー照射してセラミックス層を形成してい
る状態図である。
ｌは金属基材、２はセラミックス層、３は結合層、４は
金属ジルコニウム、５はバインダー、６は塗布層、７は
レーザー装置、８は金属ジルコニウム層を示す。
第１図 第２図
第３図 第４図Figures 1 to 4 show one embodiment of the present invention.
The figure shows a state in which a bonding layer is formed on a metal base material, FIG. 2 shows a state in which a coating layer is applied on the bonding layer, and FIG. 3 shows a state in which a metal layer is formed by irradiating the coating layer with a laser. 4 are state diagrams in which a ceramic layer is formed by irradiating a metal layer with a laser. 1 is a metal base material, 2 is a ceramic layer, 3 is a bonding layer, 4 is metal zirconium, 5 is a binder, 6 is a coating layer, 7 is a laser device, and 8 is a metal zirconium layer. Figure 1 Figure 2 Figure 3 Figure 4
Claims (1)
ルコニウム等の活性金属粒子を塗布して塗布層を形成し
、該塗布層を、不活性雰囲気にて前記結合層にわずかに
かかる程度にレーザー照射することにより結合層に冶金
的に接合する金属層を形成し、その後該金属層を、酸素
介在雰囲気にて前記結合層との境界付近までレーザー照
射することによりセラミックス化することを特徴とする
熱遮蔽コーティング方法。1) Apply active metal particles such as zirconium to the upper surface of the bonding layer coated on the surface of the base material to form a coating layer, and apply the coating layer in an inert atmosphere to the extent that it slightly covers the bonding layer. A metal layer metallurgically bonded to the bonding layer is formed by laser irradiation, and then the metal layer is turned into a ceramic by laser irradiation to the vicinity of the boundary with the bonding layer in an oxygen-mediated atmosphere. Thermal shield coating method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14859788A JPH01316468A (en) | 1988-06-16 | 1988-06-16 | Heat-shielding coating method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14859788A JPH01316468A (en) | 1988-06-16 | 1988-06-16 | Heat-shielding coating method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01316468A true JPH01316468A (en) | 1989-12-21 |
Family
ID=15456317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14859788A Pending JPH01316468A (en) | 1988-06-16 | 1988-06-16 | Heat-shielding coating method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01316468A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104063A (en) * | 1984-10-24 | 1986-05-22 | Agency Of Ind Science & Technol | Surface treatment by laser |
| JPS62149886A (en) * | 1985-12-24 | 1987-07-03 | Kawasaki Steel Corp | Manufacture of surface coated steel pipe having superior corrosion resistance |
-
1988
- 1988-06-16 JP JP14859788A patent/JPH01316468A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61104063A (en) * | 1984-10-24 | 1986-05-22 | Agency Of Ind Science & Technol | Surface treatment by laser |
| JPS62149886A (en) * | 1985-12-24 | 1987-07-03 | Kawasaki Steel Corp | Manufacture of surface coated steel pipe having superior corrosion resistance |
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