%0 Journal Article
%T EFFECT OF SILVER ADDITION ON SURFACE MORPHOLOGY OF Al2O3 SCALES DURING OXIDATION OF β-NiAl<br>Effect Of Silver Addition On Surface Morphology Of Al2O3 Scales During Oxidation Of β-NiAl
%A ZHANG Xuejun
%A WU Weitao
%A NIU Yan
%A <br>张学军
%A 吴维
%J 金属学报
%D 2005
%I 
%X 利用TGA,SEM/EDS研究了Ag含量对β-NiAl合金高温氧化时生成Al2O3膜表面形貌的影响及添加1%Ag(原子分数)对1000℃氧化动力学的影响.结果表明,β-NiAl合金的氧化动力学由两段抛物线组成,分别受亚稳Al2O3和稳态α-Al2O3的生长控制.NiAl-1Ag合金的氧化动力学由三段抛物线组成,分别受γ-Al2O3,θ-Al2O3和α-Al2O3的生长控制.1000℃时,向β-NiAl中添加少量的Ag(＜1%)可以促进亚稳Al2O3向稳态α-Al2O3的转变.当添加量超过5%时,促进作用不明显.1100℃时,添加0.5%Ag对Al2O3的相变无明显的促进作用.
%K Ag
%K high temperature oxidation<br>β-NiAl
%K Ag
%K 高温氧化
%K Al2O3相变
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=B061E1135F1CBDEE96CD96C109FEAD65&aid=81959F5B55201850&yid=2DD7160C83D0ACED&vid=2001E0D53B7B80EC&iid=E158A972A605785F&sid=F7BB24011DC0D223&eid=5F8BAECF36EB55E2&journal_id=0412-1961&journal_name=金属学报&referenced_num=0&reference_num=21