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Title:
A METHOD FOR NITRIDING SURFACE OF ALUMINUM OR ALUMINUM ALLOY BY COLD SPRAY METHOD
Document Type and Number:
WIPO Patent Application WO/2011/132874
Kind Code:
A2
Abstract:
Provided is a method of nitriding a surface of aluminum or aluminum alloy by cold spraying. That is, a surface of aluminum or aluminum alloy is coated by cold spraying, and then a heat treatment is performed thereon at low temperature for a short time period. Accordingly, the method is suitable for nitriding a surface of Al and Al alloy, which is very difficult to be nitrided, at low production costs. The method includes removing a foreign material from a surface of a mother substrate comprising Al or Al alloy; cold spraying 15 to 50 wt% of a catalyst powder and 50 to 85 wt% of a coating agent powder on the surface of the mother substrate to form a coating layer; and heat treating the coating layer at a temperature of 450 to 630 °C in a nitrogen atmosphere for 2 to 24 hours.

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Inventors:
KO,, Kyung Hyun (3 Hanshin Apt, Jamwon-dong Seocho-gu, Seoul 137-030, 34-1004, KR)
LEE,, Hyuk Jun (204-701, Byucksan Apt. Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-160, KR)
Application Number:
KR2011/002520
Publication Date:
October 27, 2011
Filing Date:
April 11, 2011
Export Citation:
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Assignee:
AJOU UNIVERSITY INDUSTRY COOPERATION FOUNDATION (San 5, Woncheon-dong Yeongtong-gu,Suwon-si, Gyeonggi-do 443-749, KR)
KO,, Kyung Hyun (3 Hanshin Apt, Jamwon-dong Seocho-gu, Seoul 137-030, 34-1004, KR)
LEE,, Hyuk Jun (204-701, Byucksan Apt. Jukjeon-dong, Suji-gu, Yongin-si, Gyeonggi-do 448-160, KR)
International Classes:
C23C24/08; B05D1/10; C23C8/24
Attorney, Agent or Firm:
YOON, Jae Seung (7 Floor, Deokcheon Bldg 718-10 Yeoksam-dong, Gangnam-gu, Seoul 135-080, KR)
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Claims:



 
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