JPS6092464A - Method for diffusing aluminum - Google Patents
Method for diffusing aluminumInfo
- Publication number
- JPS6092464A JPS6092464A JP19956283A JP19956283A JPS6092464A JP S6092464 A JPS6092464 A JP S6092464A JP 19956283 A JP19956283 A JP 19956283A JP 19956283 A JP19956283 A JP 19956283A JP S6092464 A JPS6092464 A JP S6092464A
- Authority
- JP
- Japan
- Prior art keywords
- powder
- rare earth
- aluminum
- treatment
- packing
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/52—Embedding in a powder mixture, i.e. pack cementation more than one element being diffused in one step
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C10/00—Solid state diffusion of only metal elements or silicon into metallic material surfaces
- C23C10/28—Solid state diffusion of only metal elements or silicon into metallic material surfaces using solids, e.g. powders, pastes
- C23C10/34—Embedding in a powder mixture, i.e. pack cementation
- C23C10/36—Embedding in a powder mixture, i.e. pack cementation only one element being diffused
- C23C10/48—Aluminising
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明性、金属物品表面に対するアルミニウム拡散処理
方法に関し、更に詳細には全綱物品の表面に形成される
アルミニウム拡散被膜の耐酸化性、耐腐食性などを更に
向上させるための表面処理方法に関する。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an aluminum diffusion treatment method for the surface of a metal article, and more specifically, the oxidation resistance and resistance of an aluminum diffusion coating formed on the surface of a metal article. This invention relates to a surface treatment method for further improving corrosion resistance.
金属物品の表面にアルミニウムを拡散浸透させてその耐
酸化性、耐腐食性などを付与する方法はよく知られて論
る。この方法の一つとして知られてｈるアルミツヤツク
法は、アルミニウム粉末、アルミナ、ハロゲン化活性剤
（たとえばＮＨ２Ｏ））から成るノｆツク剤中に金属物
品を埋設して非酸化性雰囲気中で加熱することにより、
金属物品表面にアルミニウム拡散被験を形成するもので
ある。このアルミパック処理被膜の耐酸化性、耐腐食性
を更に向上させるためにパック剤に希土類元素１に添加
する方法も知られている。たとえば特開昭５６−８７１
ｓ６１号公鰯には、ト記アルミニウム粉末の一部を希土
類元素と他の金属（たとえばアルミニウム）との合金粉
末寸たは希土類金属のハロダン化物粉末にＩｋ換して・
ぐツク処理を行い、希土類元素を被処理金相物品着面に
拡散浸透させる方法が開示されている。しかしながら希
土類元素は微量添加した場合にけ非常に効果があるが、
それゆえに次のような問題点がある。The method of diffusing aluminum into the surface of a metal article to impart oxidation resistance, corrosion resistance, etc. is well known and will be discussed. One of these methods, known as the aluminum polishing method, involves embedding a metal article in a polishing agent consisting of aluminum powder, alumina, and a halogenated activator (e.g. NH2O) and heating it in a non-oxidizing atmosphere. By doing so,
This method forms an aluminum diffusion test on the surface of a metal article. In order to further improve the oxidation resistance and corrosion resistance of this aluminum pack treated film, a method of adding rare earth element 1 to the pack agent is also known. For example, JP-A-56-871
For No. S61 Public Sardine, a part of the aluminum powder listed in (G) is converted into an alloy powder of rare earth elements and other metals (for example, aluminum) or halide powder of rare earth metals.
A method is disclosed in which a rare earth element is diffused and penetrated into the surface of the gold-phase article to be treated by performing a hard treatment. However, rare earth elements are very effective when added in small amounts;
Therefore, the following problems arise.
（イ）微量添加であるため希土類元素をパック剤中に均
一に分散させることが極めて喘しい。このため希土類元
素が均一に分散した拡散処理層が得られない。一方、希
土類元素の添加量を多くすれば、希土類元素の偏在が緩
和され、その分布をほぼ均一にすることができる。しか
し、アルミパック処理は所定のパック層厚みを得るため
に長い処理時間が必要である。このためアルミニウム拡
散ノー中の希土類元素の量も増加し、希土類元素がアル
ミニウム、ニッケルなどと低融点の化合物全つくり、そ
の結果、破膜が剥離しやすぐなり、母材のｗｔｍ化性が
低下してしまうＯ
←ン 希土類元素を・ｅツク剤中に均一に分散させるに
はできるだけ細かい粒度のもの、たとえば２００メツシ
ユより細かいものヲｒ史用することが望ましい。しかし
、希土類元素またはその合金を、このような粒度まで細
粒化すことは極めて難しい。(a) Since rare earth elements are added in trace amounts, it is extremely difficult to uniformly disperse rare earth elements in the pack agent. For this reason, a diffusion treated layer in which rare earth elements are uniformly dispersed cannot be obtained. On the other hand, by increasing the amount of rare earth elements added, the uneven distribution of the rare earth elements can be alleviated and the distribution can be made almost uniform. However, aluminum pack processing requires a long processing time to obtain a predetermined pack layer thickness. For this reason, the amount of rare earth elements in the aluminum diffusion layer also increases, and the rare earth elements form a low melting point compound with aluminum, nickel, etc. As a result, the ruptured film peels off more easily and the wtm conversion property of the base material decreases. In order to uniformly disperse the rare earth element in the e-thickening agent, it is desirable to use particles as fine as possible, for example, particles finer than 200 mesh. However, it is extremely difficult to refine the grains of rare earth elements or their alloys to such a grain size.
したがって本発明の目的は、耐酸化性、耐腐食性、耐久
性にすぐれたアルミニウム拡散被膜を与えることができ
るアルミニウム拡散処御方法全提供することである。Therefore, it is an object of the present invention to provide a complete aluminum diffusion treatment method capable of providing an aluminum diffusion coating with excellent oxidation resistance, corrosion resistance, and durability.
本発明者は、アルミ／ｆツク処８Ｉ粉末すなわちｉ４ツ
ク剤中のアルミニウム粉末のすべてを、アルミニウムと
希土類元素の合金粉末に代えることにより本発明の上記
目的が達成されることを見出し本発明を構成するに至っ
た。The present inventor discovered that the above object of the present invention can be achieved by replacing all of the aluminum powder in the aluminum/f-thickening agent, that is, the aluminum powder in the i4-thickening agent, with an alloy powder of aluminum and a rare earth element. I ended up configuring it.
すなわち本発明は、拡散金属粉末とハロゲン化活性剤と
不活性担体粉末とから成る混合粉末中に金属物品を埋設
して非酸化性雰囲気中で加熱するａ４ ｙ り処１Ｍ法
にお−て、拡散金属粉末がアルミニウムと希土類金属と
の合金粉末のみから成ることを特徴とするアルミニウム
拡散処理方法であるつ以下、本＠ＢｉＪを詳細に説明す
る。That is, the present invention uses the a4y process 1M method in which a metal article is embedded in a mixed powder consisting of a diffused metal powder, a halogenated activator, and an inert carrier powder and heated in a non-oxidizing atmosphere. The present @BiJ, which is an aluminum diffusion treatment method characterized in that the diffusion metal powder consists only of an alloy powder of aluminum and a rare earth metal, will be described in detail below.
本発明に使用する拡散金属粉末はアルミニウムと希土類
元素との合金粉末であり、アルミニウムと希土類元素の
金属をそれぞれの融点以上の温度で混合したものを冷却
凝固させ、細粉化することにより得られる。この合金は
、固溶体、共融混合物、または金Ｈ５間化合物のいずれ
の形態であってもよい。この合金中のアルミニウム含有
針は一般に７０重量％以上とするのが適搗である０希土
類元素としてはスカンジウム（ｓｃ）、イツ） ＩＪウ
ム（Ｙ）、ランタン（Ｌａ）、セリウム（Ｃｅ）、ゾラ
セオジム（Ｐｒ）、ネオヅＡ （Ｎｄ）、ゾロメチウＡ
（Ｐｍ）、サマリウム（Ｓｍ）、ユーロピウム（εＵ）
、ガドリニウム（Ｇｄ）、テルビウム（Ｔｂ）、ジスプ
ロシウム（Ｄｙ）、ホルミウム（Ｈａ ）、エルビウム
（Ｅ「）、ツリウム（Ｔｍ）、イッテルビウム（Ｙｂ）
、ルテチウム（Ｌｕ） およびこレラの２ａ１以上の混
合物を使用すス／”Ｊ−充マＩ務ス−１たミツシュメタ
ｔｂ （Ｍｍ）（Ｌａ ２２〜３８ Ｘ。The diffused metal powder used in the present invention is an alloy powder of aluminum and rare earth elements, and is obtained by cooling and solidifying a mixture of aluminum and rare earth metals at a temperature above their respective melting points, and then pulverizing the mixture. . The alloy may be in the form of a solid solution, a eutectic mixture, or a gold H5 intercompound. It is generally appropriate for the aluminum-containing needle in this alloy to be 70% by weight or more. Rare earth elements include scandium (sc), IJ (Y), lanthanum (La), cerium (Ce), and zoraceodymium. (Pr), Neozu A (Nd), Zoromechiu A
(Pm), samarium (Sm), europium (εU)
, gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ha), erbium (E'), thulium (Tm), ytterbium (Yb)
, Lutetium (Lu) and Cholera (La 22-38X).
Ｃｅ ４８〜５６ Ｎ、その他Ｎｄ、Ｐｒ、ｙ、ｂよび
少量のＦ、％Ａ） を含む、希土類元素９５重ｔＸ以上
の混合物）も本発明の希土類元素として使用することが
できる。A mixture of rare earth elements of 95 weight tX or more containing Ce 48-56 N, other Nd, Pr, y, b and a small amount of F, %A) can also be used as the rare earth element in the present invention.
本発明に使用するハロゲン化活性剤は、／４′ツク剤中
のアルミニウムが被処理金属表面に拡散浸透するのを促
進するものであり、具体的にｉｊ ＮＨ４ＣｊＮＨ４Ｆ
％ＮａＣノ、ＮａＦなどのハロダン化物が使用される。The halogenation activator used in the present invention is one that promotes the diffusion and penetration of aluminum in the /4' thickening agent into the surface of the metal to be treated.
% NaC, NaF, etc. are used.
また、不活性担体粉末は、溶融した合金粉末粒子が相互
に接触しないように働くものであり、たとえばアルミナ
が使用される。Further, the inert carrier powder acts to prevent the molten alloy powder particles from coming into contact with each other, and for example, alumina is used.
本発明に使用するノやツク剤は、アルミニウムと希土類
元素との合金粉末５〜５０重量％〔希土類元素０．０１
〜５重鎗％（／やツク剤の全重量に対して）〕、〕へロ
ｒン化活性剤１〜５重量％アルミナ粉末残部から成る。The thickening agent used in the present invention is an alloy powder of aluminum and rare earth elements 5 to 50% by weight [rare earth element 0.01%].
~5% by weight (based on the total weight of the thickener), 1~5% by weight of heronization activator, the balance being alumina powder.
本発明は／ｆツク剤の拡散金属粉末としてアルミニウム
と希土類元素との合金粉末のみを使用することを特徴と
している。このパックａｌｌ外Ｅｋｉ臥イ〒ルミ／４ツ
ク処理を行うにはたとえば次のようにすればよい〇
まずａ４ツク剤中に被処理金属物品を埋設し、非酸化性
雰囲気、たとえばＮ２ またはＡｒ ′１＃囲気中、７
００〜９００℃でＯ，Ｓ〜２．５時間／やツク処理を行
う。次に被処理物をノやツク剤の中から取り出り１、Ｎ
２、Ｎ２また＃−１Ａｒ のような非酸化性雰囲気中、
８００〜１１００℃で１．０〜５．０時間拡散処理を行
えばよい。The present invention is characterized in that only an alloy powder of aluminum and rare earth elements is used as the diffusion metal powder of the /f-thickening agent. In order to carry out this Eki Lumi/Quadrature treatment outside the pack, for example, the following procedure may be performed: First, the metal article to be treated is buried in an A4 adhesive, and the metal article is placed in a non-oxidizing atmosphere, such as N2 or Ar'1# Ikichu, 7
Perform O.S. treatment at 00 to 900° C. for 2.5 hours. Next, take out the object to be treated from the glue and apply 1.
2. In a non-oxidizing atmosphere such as N2 or #-1Ar,
Diffusion treatment may be performed at 800 to 1100°C for 1.0 to 5.0 hours.
本発明によれば、パック剤中のすべてのアルミニウム粉
末と希十泊ｊ元累とがあらかじめ合金化されているため
、ノｆツク剤中に希土類元素が均一に分散され、偏在す
ることがない。このためパック処理層、処Ｊ’＋＋胎中
に微量の希土類元素が均一に分散され、従来法、すなわ
ち希土類元素をそのまま使用したり、あるいけパック剤
中のアルミニウム粉末の一部と合金化して使用するよう
な場合とくらべて、耐酸化性、耐腐食性が商いアルミニ
ウム拡散被膜が得られる。また、すべてのアルミニウム
と希土類元素とが合金化されているので、パック剤の混
合調製も容易に行うことができる。According to the present invention, all the aluminum powder and the rare earth elements in the packing agent are alloyed in advance, so that the rare earth elements are uniformly dispersed in the packing agent and are not unevenly distributed. . For this reason, a small amount of rare earth elements are uniformly dispersed in the pack treatment layer and treatment layer, and conventional methods, such as using rare earth elements as they are or alloying them with a part of the aluminum powder in the pack agent, are used. An aluminum diffusion coating with better oxidation resistance and corrosion resistance can be obtained compared to the case where aluminum is used. Furthermore, since all of the aluminum and rare earth elements are alloyed, it is easy to mix and prepare a packing agent.
次に実施例により本発明を更に詳細に説明する・実施例
１
次の組成を有するＮＩ Ｒｅ５１ｓｔ鋳鉄から２５鵡×
４０ｍＸ５＋＊の試料を作成した。Next, the present invention will be explained in more detail with reference to Examples.Example 1 25 min.
A 40m×5+* sample was prepared.
Ｃ２，０（重量％）
Ｓｔ ２ 、２
Ｍｎ １ 、 Ｏ
Ｎｌ ２０．０
Ｃｒ ２ 、２
Ｐ Ｏ，０５
Ｆｅ残
この試料を次の組成を有するパック剤中に埋設し、Ｎ２
雰囲気中、７５０Ｃで１．５時間パック処理を行い、
次にノやツク剤の中から取り出し、Ｎ２ 雰囲気中、９
５０Ｃで３．５時間拡散処理全行った。C2,0 (wt%) St 2 , 2 Mn 1 , O Nl 20.0 Cr 2 , 2 PO O,05 Fe remainder This sample was embedded in a packing agent having the following composition, and N2
Packing treatment was carried out at 750C for 1.5 hours in an atmosphere.
Next, take it out from the glue and the thickener, and put it in an N2 atmosphere for 9 minutes.
All diffusion treatments were performed at 50C for 3.5 hours.
ノやツク剤の組成
アルミナ粉（１００〜２００メツシユ）６８（重量９６
）アルミニウムとミツシュメタルとの合金粉（１００〜
２００メツシユ）３０
ハロ）ｆ７活性剤ＮＨ４Ｃノ ２
ミツシユメタル（Ｍｍ ） の添加量は／４ツク剤の全
重量に対して０．２５．０．５０．１０口ｔ２．０訃よ
びｓ 、０：ｉｔＮとした。アルミニウム拡散被膜の厚
みは０．２５〜１．０％のとき１３０μ、２％のとき１
００μ、５％のとき８０μであつ九。また比較例として
、 Ｍｍを合金化することなくそのまま、・やツク剤の
全重量に対して０．５０．１．口、２．０および５．０
貞蓋％添加したものを月１いて同様の処理を行った （
／４′ツク剤：アルミナ粉（１００〜２００メツシユ）
６８重葉％、アルミニウム粉（１００ロ〜２００メツシ
ユとＭｍ粉（１００〜２００メツシユ）とを合わせて５
０ｆｆｉ景％、ＮＨ４ｃｔ ２ ＊ ｉｔ％）。アルミ
ニウム拡散被膜の厚みは０．５〜１．０％のとき１２Ｃ
ｎ ｎ−り ｎ（の、Ｌ−貞１０ｒＩｎ−５９（のとき
８０μであった。Composition of thickening agent Alumina powder (100-200 mesh) 68 (weight 96
) Alloy powder of aluminum and Mitsushi metal (100~
200 mesh) 30 halo) f7 activator NH4C No. 2 Mitsushi metal (Mm) addition amount is 0.25. And so. The thickness of the aluminum diffusion coating is 130μ when it is 0.25 to 1.0%, and 1 when it is 2%.
When it is 00μ and 5%, it is 80μ and nine. In addition, as a comparative example, Mm was used as it is without alloying, and 0.50.1. mouth, 2.0 and 5.0
The same treatment was carried out once a month with % Teigai added (
/4' Thickening agent: Alumina powder (100-200 mesh)
68% heavy leaf, aluminum powder (100 ~ 200 mesh) and Mm powder (100 ~ 200 mesh) combined 5
0ffiview%, NH4ct2*it%). The thickness of the aluminum diffusion coating is 12C when it is 0.5 to 1.0%.
It was 80μ when it was L-ch10rIn-59.
このようにして得られた各試料について、次のように耐
酸化性試験を行った。For each sample thus obtained, an oxidation resistance test was conducted as follows.
１０００℃に保った大気炉中に上記試料を４５分間保持
し、次に試料を炉から取り出して空気中で１５分出１自
然冷却する。これを１サイクル（６０分）として、計４
０サイクル繰り返した後、試験前後の車量変化および試
験後の表面性状により、被膜の耐酸化性を評価した。The sample is kept in an atmospheric furnace maintained at 1000° C. for 45 minutes, then taken out from the furnace and left in air for 15 minutes to cool naturally. This is one cycle (60 minutes), totaling 4 cycles.
After repeating 0 cycles, the oxidation resistance of the coating was evaluated based on the change in vehicle weight before and after the test and the surface texture after the test.
Ｍｍの添加量を変化させたときの、東員変化を第１図に
示す。従来法（比較例）よりも本発明方法によるものの
耐酸化性がすぐれていること力ζよくわかる。これは、
従来法では処理層中に希土類元素が偏在し、処理層の性
状が均一でないため、耐酸化性の弱い部分が早期に酸化
され、それ′ｌＪ（進行するためであると考えられる。FIG. 1 shows the change in Toin when the amount of Mm added is changed. It is clearly seen that the oxidation resistance of the method of the present invention is superior to that of the conventional method (comparative example). this is,
This is thought to be because in the conventional method, rare earth elements are unevenly distributed in the treated layer and the properties of the treated layer are not uniform, so parts with weak oxidation resistance are oxidized early and oxidation progresses.
またＭｍ ｔ！Ａ加祉が１．０％のときの、力ｌ熱冷却
サイクルの回数とルＩｔ変化の関係を第２図に示す。Mmt again! FIG. 2 shows the relationship between the number of thermal cooling cycles and the change in L when the A is 1.0%.
第２図から、本発明方法により処理された試料は従来法
のものにくらべて皇Ｗ減がｅｌとんとなく、耐酸化性に
すぐれていることがわかる。From FIG. 2, it can be seen that the sample treated by the method of the present invention has a much greater reduction in EL than the sample treated by the conventional method, and has excellent oxidation resistance.
実施例２
次の組成を有する姐 基超合金から実施例１と同じ寸法
の試料を作成した。Example 2 A sample having the same dimensions as Example 1 was prepared from a superalloy having the following composition.
Ｎｌ ７４（束量％）６１（重量％）
Ｃｒ １２ 、５ ６ 、 Ｉ
Ｇｏ ７ 、５
Ｍｏ ４ 、２ ２ 、０
Ｗ ５．８
Ｔｓ ９ 、 Ｏ
Ｎｂ ２ 、 ＯＯ、５
＾ノ ６．１ ５．４
丁１ ０．８ １．０
ＣＯ，１２０、１３
８０，０１０，０２
Ｚｒ Ｏ、１００、１５
Ｒｅ −０，５
Ｈず ０．４
この試料を、実施例１で使用したものと同じ組成（アル
ミニウム合金中のＭ重量は／４′ツク剤の全重量に対し
て１．０％）のパック剤中に埋設し、Ｎ２ 雰囲気中・
７５０℃で１．５時曲・やツク処理し、次にパック剤の
中から取り出し、 Ｎ２ 雰囲気中、１１００℃で２時
間拡散処理を行った。試料１、ＩＩともに、アルミニウ
ム拡散層の厚みは１００μであった。Nl 74 (bundle amount %) 61 (weight %) Cr 12 , 5 6 , I Go 7 , 5 Mo 4 , 2 2 , 0 W 5.8 Ts 9 , O Nb 2 , OO, 5 ＾ノ 6.1 5 .4 D1 0.8 1.0 CO,120,13 80,010,02 Zr O,100,15 Re -0,5 HZ 0.4 This sample had the same composition as that used in Example 1. (The weight of M in the aluminum alloy is /4' 1.0% of the total weight of the packing agent), and the
It was subjected to a bending process at 750°C for 1.5 hours, then taken out from the pack agent and subjected to a diffusion process at 1100°C for 2 hours in an N2 atmosphere. In both samples 1 and II, the thickness of the aluminum diffusion layer was 100 μm.
比較例としてＭｍを添加しない／４ツク剤甲で、同様の
処理管行った。As a comparative example, a similar treatment tube was carried out with no addition of Mm/4-layer agent A.
このようにして得られた試料を、１２００℃に保った大
気炉中に４５分１０１保持し、次に炉から取り出して窒
気中で１５分間自然冷却する。これを１サイクル（６０
分）として１６０サイクル行った後、試験前後の酸化減
量を測定した＠結果を次表に示す。The sample thus obtained was held in an atmospheric furnace maintained at 1200° C. for 45 minutes, and then taken out from the furnace and naturally cooled in nitrogen for 15 minutes. This is done for 1 cycle (60
After 160 cycles (min), the oxidation loss before and after the test was measured. The results are shown in the table below.
試料 Ｍｍ 酸化減量（ｍｇ ７ｃｍ ２）■ 添加
−１，０
■ 無龜加 −２，２
ＩＩ 添加 −０，８
■ 無添加 −２，０
試料１、酩ともに、Ｍｒｎを添加することにより、耐酸
化性試駆による減−は小さくなっている。Sample Mm Oxidation loss (mg 7cm2)■ Addition
-1,0 ■ No addition -2,2 II addition -0,8 ■ No addition -2,0 For both sample 1 and alcohol, by adding Mrn, the reduction due to the oxidation resistance test became smaller. There is.
第１図はＭｍ ｍｓ加綾と耐酸化性との関係を示すグラ
フであり、第２図は、本＠明方法と従来法により処理し
た被１１りの耐酸化性を地紋して示すグラフである。
２４６８
Ｍｍ ｌ７ＩＤ Ｖ （＊菫ｏ１．）Fig. 1 is a graph showing the relationship between Mm ms addition and oxidation resistance, and Fig. 2 is a graph showing the oxidation resistance of the 11 substrates treated by the present method and the conventional method as background patterns. be. 2468 Mm l7ID V (* Sumire o1.)
Claims (1)
粉末とから成る混合粉末中に全綱物品を埋設して非酸化
性雰囲気中で加熱する／４′ツク処理法において、拡散
金属粉末がアルミニウムと希土類金属との合金粉末のみ
から成ることを＊ｔａとするアルミニウム拡散処理方法
。(1) In the 4' treatment method, the entire steel article is embedded in a mixed powder consisting of a diffused metal powder, a halogenated activator, and an inert carrier powder and heated in a non-oxidizing atmosphere. An aluminum diffusion treatment method in which *ta is made of only alloy powder of aluminum and rare earth metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19956283A JPS6092464A (en) | 1983-10-25 | 1983-10-25 | Method for diffusing aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19956283A JPS6092464A (en) | 1983-10-25 | 1983-10-25 | Method for diffusing aluminum |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6092464A true JPS6092464A (en) | 1985-05-24 |
| JPS626745B2 JPS626745B2 (en) | 1987-02-13 |
Family
ID=16409887
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19956283A Granted JPS6092464A (en) | 1983-10-25 | 1983-10-25 | Method for diffusing aluminum |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6092464A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120449A (en) * | 1974-08-12 | 1976-02-18 | Fujita Corp | Kozobutsuniokeru taishinkako |
| JPS5687661A (en) * | 1979-12-19 | 1981-07-16 | Hitachi Ltd | Metal article coating method |
-
1983
- 1983-10-25 JP JP19956283A patent/JPS6092464A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5120449A (en) * | 1974-08-12 | 1976-02-18 | Fujita Corp | Kozobutsuniokeru taishinkako |
| JPS5687661A (en) * | 1979-12-19 | 1981-07-16 | Hitachi Ltd | Metal article coating method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS626745B2 (en) | 1987-02-13 |
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