影响Ti合金热稳定性的因素  

A REVIEW ON THERMAL STABILITY OF TITANIUM ALLOYS

作　　者：熊玉明[1] 朱圣龙[1] 王福会[1] 

机构地区：[1]中国科学院金属研究所,金属腐蚀与防护国家重点实验室,沈阳110016

出　　处：《腐蚀科学与防护技术》2001年第z1期471-475,共5页Corrosion Science and Protection Technology

基　　金：国家自然科学基金 (No5 975 10 5 6);国家杰出青年基金 (No .5 962 5 10 3 )资助项目

摘　　要：综述了合金元素、环境气氛、相变。Effects of alloying,environment,phase-transformation and coatings on the oxidation behavior of titanium alloys are reviewed in this paper.Results showed that Si,Nb,Mo W and Al could improve the oxidation resistance of titanium alloys,while Cu,Cr,V and Mn are detrimenteal.Titanium alloys may react with oxygen to form less-protective oxides scale (generally rutile TiO 2) when they are exposed to oxidizing environments.In the meanwhile,oxygen dissolves into the alloy substrate to form a hardened,oxygen rich layer or so called 'alpha-case' (oxygen embrittlement),which may in turn degrade the mechanical properties of the alloys.And CO 2 can accelerate their oxidation by self-catalysis.However,Nitrogen may bring beneficial effect on oxidation behavior of Ti-alloys through replacing partly the oxygen at the interface of oxide scale/substrate.Many studies indicated enhanced oxidation resistance of titanium alloys by high temperature coating is a prerequisite for its application.And enamel coating may be one of the best choice among these coatings.

关 键 词：TI合金 热稳定性 

分 类 号：TG17[金属学及工艺—金属表面处理]