第2期 周伟等：在钛合金表面制备ASi涂层的方法及其高温抗氧化性 161 △G12>△G13,表明TisSi3更易形成，且当温度高于 [3]Gurrappa I.Effect of aluminizing on the oxidation behavior of the 1000K时，△G14开始为负值，反应式(14)也可能 titanium alloy IMI 834.Oxid Met,2001.56:73 [4]Zhou C G.Xu H B.Gong S G.et al.A study of aluminide coat- 发生， ings on TiAl alloys by the pack cementation method.Mater Sci 4结论 Eng2003,A341:169 [5]牛焱，刘刚，吴维.铂改性铝化物涂层的高温氧化·腐蚀科学 采用低氧压高温快速熔结技术在Ti-6AI一4V 与防护技术，2000.12：63 合金表面成功地制备出抗高温氧化的ASⅰ熔结涂 [6]Angenete J.Stiller K.Langer V.Oxidation of simple and P- 层，通过对涂层的动力学和热力学进行分析和讨论 modified aluminide diffusion coatings on Ni-base superalloysI Oxide scale microstructure.Oxid Met,2003.60(1/2):47 明确了A1Si熔结涂层的熔结过程和机制.在 [7]Angenete J,Stiller K.Oxidation of simple and Pt modified alu- 1073K空气中循环氧化105h实验结果表明低氧压 minide diffusion coatings on Ni-base superalloys-l Oxide scale 熔结ASⅰ涂层能够显著地提高钛合金的抗氧化能 failure.Oxid Met.2003.60(1/2):83 力 [8]钱苗根，姚寿山，张少宗现代表面技术。北京：机械工业出版 社，2001：233 参考文献 [9]Villars P,Prince A.Okamoto H.Handbook of ternary alloy phase diagrams.Materials Park,OH:ASM International,1995: [1]Zhao Y G.Zhou W.Qin Q D,et al.Effect of pre-oxidation on 4312 the properties of aluminide coating layers formed on Ti alloys.J [10]Liang Y J.Che Y C.Inorganic substances thermodynamic data Alloys Compd.2005.391:136 handbook.Beijing:Northeastern University Press of China, [2]赵宇光，周伟，赵玉谦，等.分散剂Y203对渗铝层的影响.稀 1994.383 有金属材料与工程，2005,10：1574 A way to fabricate an Al Si coating on the surface of a Ti alloy and its high temper- ature oxidation resistance ZHOU Wei,ZHAO Yuguang Key Laboratory for Automobile Materials of Chinese Ministry of Education,Department of Materials Science and Engineering,Jilin University at Nan- ling Campus.Changchun 130025.China ABSTRACI An Al Si fusing coating was successfully produced by low oxygen pressure high temperature fus- ing technology for improvement of the high temperature oxidation resistance of Ti alloys.Compared with other technologies,this technology was correspondingly simple without long term treatment and the concentrations of Al and Si in the fusing coating could be controlled by adjusting the powders mixing ratio.It is verified by XRD that the Al Si fusing coating is mainly composed of Al,Si,TisSis,and TiAls phases.Cyclic oxidation tests at 1073 K for 105h in air reveals that the mass gain of the uncoated Ti alloy keeps rapidly increasing during oxida tion,while the Al Si fusing coating obeys a parabolic law and remarkably improves the oxidation resistance. KEY WORDS coatings:Ti alloys:fusing:high temperature oxidationΔG12＞ΔG13‚表明 Ti5Si3 更易形成‚且当温度高于 1000K 时‚ΔG14开始为负值‚反应式（14）也可能 发生． 4 结论 采用低氧压高温快速熔结技术在 Ti－6Al－4V 合金表面成功地制备出抗高温氧化的 Al－Si 熔结涂 层．通过对涂层的动力学和热力学进行分析和讨论 明确了 Al－Si 熔结涂层的熔结过程和机制．在 1073K空气中循环氧化105h 实验结果表明低氧压 熔结 Al－Si 涂层能够显著地提高钛合金的抗氧化能 力． 参 考 文 献 ［1］ Zhao Y G‚Zhou W‚Qin Q D‚et al．Effect of pre-oxidation on the properties of aluminide coating layers formed on Ti alloys．J Alloys Compd‚2005‚391：136 ［2］ 赵宇光‚周伟‚赵玉谦‚等．分散剂 Y2O3 对渗铝层的影响．稀 有金属材料与工程‚2005‚10：1574 ［3］ Gurrappa I．Effect of aluminizing on the oxidation behavior of the titanium alloy IMI 834．Oxid Met‚2001‚56：73 ［4］ Zhou C G‚Xu H B‚Gong S G‚et al．A study of aluminide coat￾ings on TiAl alloys by the pack cementation method．Mater Sci Eng‚2003‚A341：169 ［5］ 牛焱‚刘刚‚吴维．铂改性铝化物涂层的高温氧化．腐蚀科学 与防护技术‚2000‚12：63 ［6］ Angenete J‚Stiller K‚Langer V．Oxidation of simple and Pt￾modified aluminide diffusion coatings on N-i base superalloys－Ⅰ． Oxide scale microstructure．Oxid Met‚2003‚60（1／2）：47 ［7］ Angenete J‚Stiller K．Oxidation of simple and Pt-modified alu￾minide diffusion coatings on N-i base superalloys－Ⅱ．Oxide scale failure．Oxid Met‚2003‚60（1／2）：83 ［8］ 钱苗根‚姚寿山‚张少宗．现代表面技术．北京：机械工业出版 社‚2001：233 ［9］ Villars P‚Prince A‚Okamoto H．Handbook of ternary alloy phase diagrams．Materials Park‚OH：ASM International‚1995： 4312 ［10］ Liang Y J‚Che Y C．Inorganic substances thermodynamic data handbook．Beijing：Northeastern University Press of China‚ 1994：383 A way to fabricate an Al－Si coating on the surface of a Ti alloy and its high-temper￾ature oxidation resistance ZHOU Wei‚ZHAO Y uguang Key Laboratory for Automobile Materials of Chinese Ministry of Education‚Department of Materials Science and Engineering‚Jilin University at Nan￾ling Campus‚Changchun130025‚China ABSTRACT An Al－Si fusing coating was successfully produced by low-oxygen pressure high-temperature fus￾ing technology for improvement of the high-temperature oxidation resistance of Ti alloys．Compared with other technologies‚this technology was correspondingly simple without long-term treatment and the concentrations of Al and Si in the fusing coating could be controlled by adjusting the powders’mixing ratio．It is verified by XRD that the Al－Si fusing coating is mainly composed of Al‚Si‚Ti5Si3‚and TiAl3phases．Cyclic oxidation tests at 1073K for105h in air reveals that the mass gain of the uncoated Ti alloy keeps rapidly increasing during oxida￾tion‚while the Al－Si fusing coating obeys a parabolic law and remarkably improves the oxidation resistance． KEY WORDS coatings；Ti alloys；fusing；high-temperature oxidation 第2期 周 伟等： 在钛合金表面制备 Al－Si 涂层的方法及其高温抗氧化性 ·161·