(中南大學(xué) 材料科學(xué)與工程學(xué)院，長沙 410083)
摘 要: 全面綜述國內(nèi)外TiAl基合金體系高溫氧化機(jī)理及其防護(hù)研究進(jìn)展，特別是20世紀(jì)90年代以來的研究情況。主要闡述TiAl系金屬間化合物分類及其應(yīng)用、TiAl基合金高溫氧化行為、氧化膜結(jié)構(gòu)及其形成、氮效應(yīng)、表面效應(yīng)、Z相的形成及其對氧化行為的影響，合金化和涂層防護(hù)方法及其機(jī)理、近年來出現(xiàn)的新表面處理技術(shù)以及傳統(tǒng)表面處理技術(shù)在TiAl基合金抗高溫氧化防護(hù)方面的應(yīng)用，對各種防護(hù)方法的特點(diǎn)及應(yīng)用范圍進(jìn)行對比分析，并對該領(lǐng)域研究的發(fā)展趨勢進(jìn)行展望。
關(guān)鍵字: TiAl基合金；高溫氧化；合金化；涂層
and protection of TiAl-based alloy
（School of Materials Science and Engineering, Central South University, Changsha 410083, China）
Abstract:The research progress at home and abroad of the high-temperature oxidation behavior and protection of the TiAl-based alloy, especially after 1990s, was reviewed. The classification and the applications, the high temperature oxidation behavior, the formation and structure of the oxidate layers, the formation and influence of nitrogen effect, surface effect and Z phase on oxidation behavior, the bulk and surface alloying protection and its mechanics, the coating protection and its mechanics of TiAl-based alloy, the formation and structure of the oxidation layers, the nitrogen effect, surface effect, the formation of Z phase and the effect of it on oxidation behavior, the alloying and coating protection of TiAl-based alloy, new surface treatment technologies and traditional surface treatment technologies reused to improve the high temperature oxidation resistance of the TiAl-based alloy and the future development of this area were reviewed. The characteristic and applications of the different protection ways were also discussed.
Key words: TiAl-based alloy; high-temperature oxidation; alloying; coating
