使用Al-8Si(mass%)合金熔体对Ti3Al基合金表面进行液相Al-Si共渗硅处理,在表层发生了不同程度的界面反应,经X射线能谱分析和对涂层的X射线衍射分析,推断涂层由TiAl3及Ti-Si化合物组成.经1013 K/6min+983 K/10 min的二次改性处理,可明显改善Ti3Al基合金的高温抗氧化性.1173 K/100 h氧化后的涂层组织,分析表明,涂层改善基体抗高温氧化性的根本原因是在最外层生成了一薄层致密的Al2O3膜.相关机理还有待更深一步研究.
参考文献
| [1] | LipsittHA, in:Koch CC, Liu Ct, Stoloff(Eds), High - temperature Ordered Intermetallic Alloys, vol. 39, Materials Research Society, 1985, p. 351. |
| [2] | RoweRG, inWhang SH, Liu CT, Pope DP, Stiegler (Eds),High Temperature Aluminides and Intermetallics, The Minerals, Metals and Materals Society, 1990, 375. |
| [3] | Naka S, Thomas M, Khan T. Potential and prospects of some intermetallic compounds for structural applications [J]. Mater Sci Technol 1992;8:291. |
| [4] | Froes FH, Suryanarayana C, Eliezer D. Synthesis, properties and application of titanium aluminides [J]. J Mater Sci 1992;27:5113. |
| [5] | C H Koo, T H Yu. Pack cementation coatings on Ti3Al - Nb alloys to modify the high - temperature oxidation properties.Surface and Coatings Technology, 126(2000):171. |
| [6] | Rajendra U Vaidya, Y W Sin, K N Subramanian, et al. Processing and Fabrication of Advanced Materials Ⅲ, edited by V.A. Ravi, T. S. Srivatsan and J. J. Mooer. The Minerals & Materials Society, 1994. 515. |
| [7] | Guohua Q iu, Jiansheng Wu, Lanting Zhang, et al. Oxidation behavior of Ti3Al alloyed with niobium and silicon[J]. Metallurgica at Materialia, 1995, 33(2) :213. |
| [8] | J S Wu, L T Zhang, F. Wang, et al. The individual effects of niobium and silicon on the oxidation behavior of Ti3Al based alloys[J]. Intermetallics, 8 ( 2000 ): 19. |
| [9] | Xiong HP, Li X H, Mao W, et al. Study on surface modification of TiAl- based alloy by Al - Si alloy[J]. J Mater Eng,2002; (3)17. |
| [10] | 熊华平,李晓红,毛唯,等.含硅合金熔体对TiAl基合金表面改性的研究[J].材料工程,2002;(3):17. |
| [11] | 熊华平,李晓红,毛唯,等.表面渗硅处理提高钛铝基合金高温抗氧化性[J].金属学报,2003;39:66. |
| [12] | Chu M S, Wu S K. Improvement in the oxidation resistance of α2- Ti3Al by sputtering Al film and subsequent interdiffusion treatment[J]. Surf Coat Technol. 2004,179:257. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%