JPH0417657A - Carburizing preventing surface treatment - Google Patents
Carburizing preventing surface treatmentInfo
- Publication number
- JPH0417657A JPH0417657A JP11866690A JP11866690A JPH0417657A JP H0417657 A JPH0417657 A JP H0417657A JP 11866690 A JP11866690 A JP 11866690A JP 11866690 A JP11866690 A JP 11866690A JP H0417657 A JPH0417657 A JP H0417657A
- Authority
- JP
- Japan
- Prior art keywords
- carburizing
- diffusion
- surface treatment
- carburization
- short time
- 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
- 238000004381 surface treatment Methods 0.000 title claims abstract description 7
- 238000005255 carburizing Methods 0.000 title abstract description 7
- 239000011651 chromium Substances 0.000 claims abstract description 21
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 9
- 239000007769 metal material Substances 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- UFGZSIPAQKLCGR-UHFFFAOYSA-N chromium carbide Chemical compound [Cr]#C[Cr]C#[Cr] UFGZSIPAQKLCGR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910003470 tongbaite Inorganic materials 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- 230000002265 prevention Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 16
- 238000009792 diffusion process Methods 0.000 abstract description 15
- 230000035515 penetration Effects 0.000 abstract description 10
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 230000001681 protective effect Effects 0.000 abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract 1
- 229910052593 corundum Inorganic materials 0.000 abstract 1
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 6
- 239000011247 coating layer Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000004453 electron probe microanalysis Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- -1 carbide Substances 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000005254 chromizing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000010410 dusting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
Abstract
Description
【発明の詳細な説明】
〈産業上の利用分野〉
本発明は、浸炭により損傷が問題となる高温機器用の金
属材料の浸炭防止表面処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a surface treatment method for preventing carburization of metal materials for high-temperature equipment where damage due to carburization is a problem.
く背景技術〉
浸炭性あるいは還元性ガス雰囲気で使用される高温機器
用の金属材料として、ＳＵＳ ３１０（２５Ｃｒ −２
０Ｎ ｉ ）がある。Background technology> SUS 310 (25Cr-2
0N i ).
５ＵＳ３１０ （２５Ｃｒ−２ＯＮｉ）の様なオース
テナイト系鋼は、浸炭性あるいは還元性ガス雰囲気中で
は、４２７〜８１６℃の温度で使用される時に短時間に
浸食される（ Ｄｕｓｔｉｎｇ Ｃｏｒｒｏｓｉｏｎ
）現象がある。浸食の形態は孔食あるいは全面腐食で、
浸食面は浸炭を伴っており、腐食生成物は、メタル、カ
ーバイド、オキサイドグラファイトの混合したダストあ
るいは粉末である。Austenitic steels such as 5US310 (25Cr-2ONi) are corroded in a short time when used at temperatures between 427 and 816°C in carburizing or reducing gas atmospheres (Dusting Corrosion).
) There is a phenomenon. The form of erosion is pitting corrosion or general corrosion.
The eroded surface is accompanied by carburization, and the corrosion product is a mixed dust or powder of metal, carbide, and graphite oxide.
〈発明の目的〉
本発明は上記状況に鑑みてなされたもので、浸炭性ある
いは還元性ガス雰囲気中で短時間に異常な浸食が生じる
ことがない金属材料の表面処理方法を提供することを目
的とする。<Object of the Invention> The present invention has been made in view of the above circumstances, and an object thereof is to provide a method for surface treatment of metal materials that does not cause abnormal corrosion in a short time in a carburizing or reducing gas atmosphere. shall be.
く実 施 例〉 本発明の詳細な説明する。Example of implementation The present invention will be described in detail.
■ ５ＴＢＡ２４の母材表面にアルミニウム（Ａｊ）を
拡散浸透させるために９０．０℃で１０時間の処理を実
施した。第１図はこの処理で得られた被膜層１のＡｔ’
２の成分分析結果である。尚、成分分析は、電子線で試
料面を走査して元素の二次元分布をｌＩ測するＥ Ｐ
Ｍ Ａ （Ｅｌｅｃｔｒｏｎ Ｐｒｏｂｅ Ｍｉｅｒｏ
ａｎａｌｙｓｅｒ ）を用いた。(2) In order to diffuse and infiltrate aluminum (Aj) into the surface of the base material of 5TBA24, treatment was carried out at 90.0° C. for 10 hours. Figure 1 shows At' of coating layer 1 obtained by this treatment.
This is the result of component analysis of No.2. In addition, component analysis is performed by scanning the sample surface with an electron beam and measuring the two-dimensional distribution of elements.
M A (Electron Probe Miero
analyzer) was used.
図から判るように、被膜層１の厚さは ４００μｍであり、Ａ１２の濃度は０〜３０％である。As can be seen from the figure, the thickness of coating layer 1 is 400 μm, and the concentration of A12 is 0 to 30%.
Ａｊ ２の拡散により表面に保護性のＡｊ２０３が形成
され、これが浸炭に対し大きな抵抗を示す。The diffusion of Aj 2 forms a protective Aj 203 on the surface, which exhibits great resistance to carburization.
■ ５ＴＢＡ２４の母材表面にクロム（Ｃｒ）を拡散し
て浸透させるために１１００℃で１０時間のクロマイジ
ングを実施した。第２図はこの処理で得られた被膜層３
のＥＰＭＡによるＣｒ４及び炭素（Ｃ）５の成分分析結
果である。(2) Chromizing was carried out at 1100° C. for 10 hours in order to diffuse and infiltrate chromium (Cr) into the surface of the base material of 5TBA24. Figure 2 shows the coating layer 3 obtained by this treatment.
These are the results of component analysis of Cr4 and carbon (C)5 by EPMA.
図から判るように、被膜層３の厚さは最外層６ ａ ２
０ ｐｍがＣｒを７０％、Ｃを５％前後含有した（Ｃｒ
Ｆ ｅ ）２３Ｃ６系統の炭化物であり、内層６ ｂ
８０ ｐｍがＣｒを０〜２５％含有した拡散層である
。Ｃｒの拡散浸透によりＣｒ炭化物が形成され、これが
浸炭に対して大きな抵抗を示す。As can be seen from the figure, the thickness of the coating layer 3 is the outermost layer 6 a 2
0 pm contained 70% Cr and around 5% C (Cr
F e ) 23C6 type carbide, inner layer 6 b
80 pm is the diffusion layer containing 0 to 25% Cr. Diffusion and penetration of Cr forms Cr carbides, which exhibit great resistance to carburization.
■ 第３図は、耐浸炭性を見るために、ＡＩ拡散浸透材
、Ｃｒ拡散浸透材及び５ＵＳ３１０について、９７３℃
で１０００時間、４０％Ｈ２，２１％Ｃ０，２５％ＣＨ
４、Ｂ ａ ｌ Ｈ２の雰囲気で試験した実験結果であ
る。■ Figure 3 shows the results for AI diffusion permeation material, Cr diffusion permeation material, and 5US310 at 973°C to see carburization resistance.
for 1000 hours, 40%H2, 21%C0, 25%CH
4. These are the results of an experiment conducted in an atmosphere of B a l H2.
図から判るように、Ａｊ拡散浸透材７及びＣｒ拡散浸透
材８の浸炭深さはほとんどみられないのに対して、５Ｕ
Ｓ３１０９は約２００μｍ浸炭していることが判り、保
護性のＡｊ２０３及びＣｒ炭化物によって浸炭に対して
大きな抵抗が得られ異常な浸食が防止できることが判る
。As can be seen from the figure, the carburization depth of Aj diffusion and penetration material 7 and Cr diffusion and penetration material 8 is almost invisible, whereas 5U
It was found that S3109 was carburized to a depth of about 200 μm, and it was found that the protective Aj203 and Cr carbides provided a large resistance to carburization and could prevent abnormal corrosion.
尚、上記実施例は母材として５ＴＢＡ２４を用いたが、
炭素鋼もしくはステンレス系の材料を用いても同様に本
発明を実施することができる。In addition, although the above example used 5TBA24 as the base material,
The present invention can also be practiced using carbon steel or stainless steel materials.
〈発明の効果〉
本発明の浸炭防止表面処理方法は、金属材料にアルミニ
ウムを拡散浸透させた、もしくは金属材料にクロムを拡
散浸透させその表面にクロム炭化物を形成させたので、
保護性の酸化アルミニウムもしくはクロム炭化物によっ
て浸炭に対して大きな抵抗が得られろ。この結果、短時
間に浸食される等の異常な浸食を防止することができる
。<Effects of the Invention> The carburization prevention surface treatment method of the present invention diffuses and permeates aluminum into a metal material, or diffuses and permeates chromium into a metal material to form chromium carbide on its surface.
Great resistance to carburization can be obtained by protective aluminum oxide or chromium carbide. As a result, abnormal erosion such as erosion in a short period of time can be prevented.
第１図はＡｔ）拡散浸透材のＡＩのＥＰＭＡ分析結果を
表わすグラフ、第２図はＣｒ拡散浸透材のＣｒ及びＣの
ＥＰＭＡ分析結果を表わすグラフ、第３図はＡＩ拡散浸
透材、Ｃｒ拡散浸透材及び５ＵＳ３１０の浸炭ガス雰囲
気での実験室試験結果を表わすグラフである。
図面中、
１．３は被覆層、
２はアルミニウム（Ａｊ ）、
４はクロム（Ｃｒ ）、
５は炭素（Ｃ）、
７はＡＩ拡散浸透材、
８はＣｒ拡散浸透材、
９は５ＵＳ３１０である。
第１図
表面よりの距離（μｍ）
第２図
表面よりの距離（μｍ）Figure 1 is a graph showing the EPMA analysis results of AI of At) diffusion penetration material, Figure 2 is a graph showing the EPMA analysis results of Cr and C of Cr diffusion penetration material, and Figure 3 is a graph showing the results of EPMA analysis of AI diffusion penetration material, Cr diffusion penetration material. 1 is a graph showing laboratory test results of a penetrating material and 5US310 in a carburizing gas atmosphere. In the drawing, 1.3 is a coating layer, 2 is aluminum (Aj), 4 is chromium (Cr), 5 is carbon (C), 7 is AI diffusion penetration material, 8 is Cr diffusion penetration material, 9 is 5US310 . Figure 1 Distance from the surface (μm) Figure 2 Distance from the surface (μm)
Claims (1)
前記金属材料にアルミニウムを拡散浸透させたこと、も
しくは前記金属材料にクロムを拡散浸透させその表面に
クロム炭化物を形成させたことを特徴とする浸炭防止表
面処理方法。A surface treatment method for preventing carburization of metal materials,
A carburization prevention surface treatment method, characterized in that aluminum is diffused and infiltrated into the metal material, or chromium is diffused and infiltrated into the metal material to form chromium carbide on the surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11866690A JPH0417657A (en) | 1990-05-10 | 1990-05-10 | Carburizing preventing surface treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11866690A JPH0417657A (en) | 1990-05-10 | 1990-05-10 | Carburizing preventing surface treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0417657A true JPH0417657A (en) | 1992-01-22 |
Family
ID=14742210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11866690A Pending JPH0417657A (en) | 1990-05-10 | 1990-05-10 | Carburizing preventing surface treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0417657A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028566A (en) * | 2004-07-14 | 2006-02-02 | Mitsubishi Kakoki Kaisha Ltd | Member for hydrocarbon reforming device |
-
1990
- 1990-05-10 JP JP11866690A patent/JPH0417657A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006028566A (en) * | 2004-07-14 | 2006-02-02 | Mitsubishi Kakoki Kaisha Ltd | Member for hydrocarbon reforming device |
| JP4539907B2 (en) * | 2004-07-14 | 2010-09-08 | 三菱化工機株式会社 | Components for hydrocarbon reformers |
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