多弧离子镀Cr<sub>2</sub>O<sub>3</sub>涂层对γ-TiAl抗氧化性能的影响

腐蚀科学与防护技术, 2009, 21(3): 266-268.

多弧离子镀Cr₂O₃涂层对γ-TiAl抗氧化性能的影响

程玉贤王文朱圣龙王福会

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

State Key Laboratory for Corrosion and Protection

Chinese Academy of Sciences

Shenyang 110016

关键词： Cr₂O₃ , arc ion plating , oxidation , γ-TiAl

EFFECT OF MULTI ARC ION PLATED CHROMIA COATING ON OXIDATION BEHAVIOR OF γ-TiAl

CHENG Yu-xian

Keywords： chromia , 多弧离子镀 , 氧化 , γ-TiAl

用多弧离子镀技术在γ-TiAl金属间化合物表面制备了Cr₂O₃涂层，用SEM/EDX线扫描分析等手段研究了该涂层在900℃下的循环氧化行为.结果表明，γ-TiAl表面沉积Cr₂O₃涂层后，明显提高了γ-TiAl的抗循环氧化能力；在氧化过程中TiAl/Cr₂O₃界面处的低氧压促进了Al的选择性氧化，在TiAl一侧生成了一层富Al氧化物，该层富Al氧化物较好地阻止了TiAl中Ti的外扩散，从而抑制了TiO₂的生长.

A chromia coating was deposited on γ-TiAl surface by means of multi arc ion plating.The chromia coating was strongly adherent to the γ-TiAl substrate.The coating could also enhance the oxidation resistance of theγ-TiAl substrate during oxidation test at 900℃ in air.Characterization of the deposited coating before and after oxidation indicated that growth of an aluminum-rich oxide layer at the coating/ substrate interface occurred.The continuous aluminumrich oxide layer retarded the outward diffusion of titanium and therefore suppressed the growth of TiO₂.

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材料期刊网

多弧离子镀Cr2O3涂层对γ-TiAl抗氧化性能的影响

EFFECT OF MULTI ARC ION PLATED CHROMIA COATING ON OXIDATION BEHAVIOR OF γ-TiAl

参考文献

多弧离子镀Cr₂O₃涂层对γ-TiAl抗氧化性能的影响