利用Pt丝标记法和定量成分分析等研究方法,研究Ti-Al(2%～75%Al,摩尔分数)合金在1 173 K的大气中经24 h氧化形成的氧化膜的组织形态和生长过程.结果表明:在氧化膜中观察到Al2O3存在3种不同分布形式,即当2%＜x(Al)＜25%时,Al2O3集中地分布在外层氧化膜中;当30%＜x(Al)＜55%时,Al2O3同时分布在内层和外层氧化膜中;而当x(Al)＞65%时,氧化膜由单一的Al2O3构成.Ti-Al合金高温氧化膜中Al2O3和TiO2的分布可分为4种组织形态.采用Pt标记可清晰观察到氧化膜内、外层,外层氧化膜的形成与Al离子向外扩散有关,内层氧化膜的形态受MO/M界面热力学平衡控制.
参考文献
| [1] | Kim Y W;Dimiduk D M.Designing gamma TiAlalloys:fundamental,strategy and production[A].Warrendale,PA:TMS,1997 |
| [2] | Austin C M.Progress in implementation of cast gammatitanium aluminide[A].The Minerals,Metals & Materials Society,1995 |
| [3] | Brady M P;Smialek J L;Terepka F .Microstructure of alumina-forming oxidation resistant Al-Ti-Cr alloys[J].Scripta Metallurgica et Materialia,1995,32(10):1659-1664. |
| [4] | Parfitt L J;Smialek J L;Nic J P et al.Oxidation behavior of cubic phases formed by alloying Al3 Ti with CrandMn[J].Scripta Metallurgica et Materialia,1991,25(03):727-731. |
| [5] | Perkins R A;Chang K T;Meier G H.Oxida tion behavior of Ti-Al alloys[A].Warrendale,PA:TMS,1988 |
| [6] | Brady M P;Smialek J L;Smith J et al.Therole of Cr inpromoting protective alumina scale formation by γ-based Ti-Al-Cr alloys(Ⅰ)-compatibility with alumina and oxidation behavior in oxygen[J].Acta Materialia,1997,45(06):2357-2369. |
| [7] | Striisnijder M F .Use of ion implantation in high temperature corrosion studies[J].Surface Engineering,1997,13(04):323-329. |
| [8] | Rakowski J M .The effect of nitrogen on the oxidation of γ-TiAl[J].Scripta Metallurgica et Materialia,1995,33(06):997-1000. |
| [9] | K.Kasahara;K.Hashimoto .Effects of Aluminizing on Tensile Property and High-Temperature Oxidation of TiAl-base Alloys[J].Corrosion Engineering,1998(1):23-33. |
| [10] | 吴军,敬和民,张立武.TiAl金属间化合物表面技术进展[J].腐蚀科学与防护技术,2003(01):24-28. |
| [11] | 唐兆麟,王福会.Cr对TiAl金属间化合物抗循环氧化性能的影响[J].中国有色金属学报,1998(02):245-249. |
| [12] | 唐兆麟;王福会;吴维 .微弧氧化处理对TiAl合金抗循环氧化性能的影响[J].中国有色金属学报,1999,9(51):63-68. |
| [13] | 唐兆麟,王福会,吴维(山又).涂层对TiAl金属间化合物抗循环氧化性能的影响[J].中国有色金属学报,1998(01):56-60. |
| [14] | Mabuchi H;Kawakami T;Nakamatsu S;Matsui T;Morii K;Tsuda H .Oxidation-resistant coating for gamma titanium aluminides by pack cementation[J].Scripta materialia,1999(5):511-516. |
| [15] | 唐兆麟;王福会 .反应溅射Al2O3膜对TiAl抗高温氧化性能的影响[J].材料研究学报,1997,11(05):507-510. |
| [16] | 辛丽,李铁藩,李美栓,周龙江.氯对TiAl基合金高温氧化行为的影响[J].腐蚀科学与防护技术,1999(03):129-134. |
| [17] | JIANG Hui-ren;Hirohasi M;Imanari H et al.The relationship between the morphology of the scale and the oxidation kinetics at elevated temperature in Ti-Al alloys[J].Scripta Materialia,2001,45:253-259. |
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