The Effect of Anodic Oxide Films on the Nickel-Aluminum Reaction in Aluminum Braze Sheet

被引：4
|
作者：
Tadgell, Colin A. [1 ,2 ]
Wells, Mary A. [1 ,2 ]
Corbin, Stephen F. [2 ]
Colley, Leo [3 ]
Cheadle, Brian [3 ]
Winkler, Sooky [3 ]
机构：
[1] Univ Waterloo, Dept Mech & Mechatron Engn, Waterloo, ON N2L 3G1, Canada
[2] Dalhousie Univ, Dept Mech Engn, 1360 Barrington St,Box 15000, Halifax, NS B3H 4R2, Canada
[3] Dana Canada Corp, Oakville, ON L6K 3E4, Canada
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2017年 / 48A卷 / 03期
基金：
加拿大自然科学与工程研究理事会;
关键词：
ALLOYS;
D O I：
10.1007/s11661-016-3922-8
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The influence of an anodic oxide surface film on the nickel-aluminum reaction at the surface of aluminum brazing sheet has been investigated. Samples were anodized in a barrier-type solution and subsequently sputtered with nickel. Differential scanning calorimetry (DSC) and metallography were used as the main investigative techniques. The thickness of the anodic film was found to control the reaction between the aluminum substrate and nickel coating. Solid-state formation of nickel-aluminum intermetallic phases occurred readily when a relatively thin oxide film (13 to 25 nm) was present, whereas intermetallic formation was suppressed in the presence of thicker oxides (similar to 60 nm). At an intermediate oxide film thickness of similar to 35 nm, the Al3Ni phase formed shortly after the initiation of melting in the aluminum substrate. Analysis of DSC traces showed that formation of nickel-aluminum intermetallic phases changed the melting characteristics of the aluminum substrate, and that the extent of this change can be used as an indirect measure of the amount of nickel incorporated into the intermetallic phases. (C) The Minerals, Metals & Materials Society and ASM International 2016
引用
收藏
页码：1236 / 1248
页数：13
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