活化劑對Al-Cr擴散層中孔穴形成的影響

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活化劑對Al-Cr擴散層中孔穴形成的影響

曹鐵梁, 耿偉民, 倪政瑜, 周慶初, 潘輝英

文章導航 > 工程科學學報 > 1996 > 18(S2): 42-45

曹鐵梁, 耿偉民, 倪政瑜, 周慶初, 潘輝英. 活化劑對Al-Cr擴散層中孔穴形成的影響[J]. 工程科學學報, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

引用本文:

曹鐵梁, 耿偉民, 倪政瑜, 周慶初, 潘輝英. 活化劑對Al-Cr擴散層中孔穴形成的影響[J]. 工程科學學報, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

Cao Tieliang, Geng Weimin, Ni Zhengyu, Zhou Qingchu, Pan Huiying. Influence of Activators on Formation of Voids in Aluminum-Chromium Diffusion Coatings[J]. Chinese Journal of Engineering, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

Citation:

Cao Tieliang, Geng Weimin, Ni Zhengyu, Zhou Qingchu, Pan Huiying. Influence of Activators on Formation of Voids in Aluminum-Chromium Diffusion Coatings[J]. Chinese Journal of Engineering, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

曹鐵梁, 耿偉民, 倪政瑜, 周慶初, 潘輝英. 活化劑對Al-Cr擴散層中孔穴形成的影響[J]. 工程科學學報, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

引用本文:

曹鐵梁, 耿偉民, 倪政瑜, 周慶初, 潘輝英. 活化劑對Al-Cr擴散層中孔穴形成的影響[J]. 工程科學學報, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

Cao Tieliang, Geng Weimin, Ni Zhengyu, Zhou Qingchu, Pan Huiying. Influence of Activators on Formation of Voids in Aluminum-Chromium Diffusion Coatings[J]. Chinese Journal of Engineering, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

Citation:

Cao Tieliang, Geng Weimin, Ni Zhengyu, Zhou Qingchu, Pan Huiying. Influence of Activators on Formation of Voids in Aluminum-Chromium Diffusion Coatings[J]. Chinese Journal of Engineering, 1996, 18(S2): 42-45. doi: 10.13374/j.issn1001-053x.1996.s2.009

活化劑對Al-Cr擴散層中孔穴形成的影響

doi: 10.13374/j.issn1001-053x.1996.s2.009

中國科學院上海冶金研究所, 上海

基金項目:

冶金部腐蝕—磨蝕與表面技術開放研究實驗室資助

作者簡介:
曹鐵梁男 60歲研究員

中圖分類號: TG113.12
計量
- 文章訪問數: 227
- HTML全文瀏覽量: 73
- PDF下載量: 6
- 被引次數: 0
出版歷程
- 收稿日期: 1996-01-22
- 網絡出版日期: 2021-11-13

Influence of Activators on Formation of Voids in Aluminum-Chromium Diffusion Coatings

Shanghai Institute of Metallurgy, Chinese Academy of Science, Shanghai

摘要: Ni襯底用粉末包裝法先擴散Al再擴散Cr時,在Al-Cr擴散層內產生了孔穴。它形成的原因是:活化劑NH₄Cl加熱分解時生成HCl氣體,與已形成擴散層中的Al作用,使其從擴散層中逃逸,而在原來Al的位置上產生了孔穴。含有孔穴的Al-Cr擴散層的抗氧化能力明顯降低。
- 鹵化物活化劑 /
- Al-Cr擴散層 /
- 孔穴
Abstract: Aluminum-chromium diffusion coatings on pure nickel substrate were formed by two-step pack cementation process. It was found that existed many voids in the coatings which were formed by first aluminizing and then chromizing. It could be understood that aluminum in the coatings reacted with HCL gas decomposed from activator NH₄CL and formed ACL₃,which evaporated and resulted in formation of the voids.Oxidation resistance of Al-Cr coating with these voids was reduced signigicantly.
- halide activator /
- Al-Cr diffusion coatings /
- voids

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計量

文章訪問數: 227
HTML全文瀏覽量: 73
PDF下載量: 6
被引次數: 0

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