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| 二元Ti—Al合金高温氧化机理 | |
| 引用本文： | 李向阳,张永刚,陈昌麒,张孝吉,张通和,张荟星. 二元Ti—Al合金高温氧化机理[J]. 金属学报, 1997, 33(9): 964-970 |
| 作者姓名： | 李向阳 张永刚 陈昌麒 张孝吉 张通和 张荟星 |
| 作者单位： | [1]北京航空航天大学 [2]北京师范大学 |
| 摘 要： | 研究了Ｔｉ－３３．３％Ａｌ，Ｔｉ－４８％Ａｌ和Ｔｉ－５２％Ａｌ（原子分数）合金在１０７３和１１７３Ｋ空气中的恒温氧化行为，用Ｘ射衍射仪（ＸＲＤ）和配有能谱仪（ＥＤＳ）的扫描电子显微镜（ＳＥＭ）对氧化层表面的相组成，形貌以及氧化层剖面的显微结构和氧化机理进行了分析，结果表明：二元Ｔｉ－Ａｌ合金的氧化层由一系列薄层组成，其氧化过程可以为三个阶段，不同化层的生长方向及氧化反应的控制步骤略有差别，氧化动力 |
| 关 键 词： | 高温 氧化 氧化层 氧化动力学 钛铝合金 |
| 收稿时间： | 1997-09-18 |
| 修稿时间： | 1997-09-18 |
OXIDATION MECHANISM OF BINARY Ti-Al ALLOYS AT ELEVATED TEMPERATURE |
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| LI Xiangyang,ZHANG Yonggang,CHEN Changqi,ZHANG Xiaoji,ZHANG Tonghe,ZHANG Huixing. OXIDATION MECHANISM OF BINARY Ti-Al ALLOYS AT ELEVATED TEMPERATURE[J]. Acta Metallurgica Sinica, 1997, 33(9): 964-970 | |
| Authors: | LI Xiangyang ZHANG Yonggang CHEN Changqi ZHANG Xiaoji ZHANG Tonghe ZHANG Huixing |
| Affiliation: | LI Xiangyang,ZHANG Yonggang,CHEN Changqi(Beijing University of Aeronautics andAstronautics,Beijing ),ZHANG Xiaoji,ZHANG Tonghe,ZHANG Huixing (Beijing Normal University,Beiing ) |
| Abstract: | The isothermal oxidation behavior of Ti-33.3% Al, Ti-48% Al and Ti-52%Al(atomic fraction) intermetallic compounds oxidated at 1073 and 1173K in air was investigated. The reaction products of the oxidation scale were examined by XRD, and the surface morphology and cross-section microstructure of the oxidation scale were analyzed by SEM equipped with EDS. The results indicated that the oxidation scale of binary Ti-Al alloys was consisted of a series of thin layers, and the oxidation process could be classified into three steps, the growing direction of the oxidation scale and the rate-controlling factor of various steps is somewhat different; the isothermal oxidation kinetic curves mainly follow parabolic rate law. |
| Keywords: | Ti-Al intermetallic compound high temperature oxidation oxidation scale oxidation kinetics |
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