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. 因此研究使用粉末状钎料, 在无压或小压力下钎焊连接SiC陶瓷和金属应具有更广阔的应用前景. 目前, 对SiC陶瓷和金属的钎焊连接多选用Ag-Cu-Ti活性钎料, 如连接烧结SiC陶瓷和TiAl合金[4], Cu, Zn[5], 并借用一些扩散焊的手段, 如将焊接面表面抛光, 使用合金化的箔状钎料, 施加一定的焊接压力. 也有研究用Ni, Ti, C粉末压坯自蔓延高温合成(SHS)连接再结晶.../Nb multiple interlayers[J]. Journal of the Chinese Ceramic Society, 2002, 30(3): 305-310. [4]LIU Hui-jie, FENG Ji-cai, QIAN Yi-yu. Microstructure and strength of the SiC/TiAl joint brazed with Ag-Cu......
基体组织声阻抗相差较小的透射类缺陷.前者如β钛合金中的Nb富集偏 析[10],可以在一次底波前清晰地观察到缺陷回波.后者如本文所述的TC4合金,TC1合金棒材中的纯钛偏析[16]和含Al钛合金中的TiAl金属间化合物偏析.此类缺陷在一次底波前不反射,而在一次底波后出现游动的回波,且波幅一般小于50%.检验工作者若只观察一次底波前的情形,则认为没存在缺陷,或者注意到一次底波后......
, BENITO J A, PUCHI- CABRERA E S, STAIA M H. High temperature wear resistance of (TiAl)N PVD coating on untreated and gas nitrided AISI H13 steel with different heat treatments [J]. Wear, 2007, 262: 380-389......
C C. A correlation between tensile flow stress and Zenner-Hollomon factor in TiAl alloys at high temperatures[J]. Journal of Materials Science Letters, 2000, 19(13): 1185-1188. [17] 吴文祥, 孙德勤, 曹春艳, 王......
factor in TiAl alloys at high temperatures[J]. Journal of Materials Science Letters, 2000, 19(13): 1185-1188. [13] SPIGARELLI S, EVANGELISTA E, MCQUEEN H J. Study of hot workability of a heat treated......
. Effects of additives on corrosion and wear resistance of micro-arc oxidation coatings on TiAl alloy[J]. Transactions of Nonferrous Metals Society of China, 2010, 20(6): 1032-1036. [8] 李淑华, 程金生, 尹玉军, 辛文......
): 57-61. [11] HUANG Bai-yun, ZHOU Ke-chao, ZHENG Qing. Effects of HIPing pressure on microstructures and properties of TiAl alloy [J]. Journal of Central South University of Technology, 2000, 7(3......
]. Applied Physics, 1944, 15(1): 22-27. [17] WANG Y, LIN D L. A correlation between tensile flow stress and Zener-Hollomon factor in TiAl alloy at high temperatures[J]. Materials Science, 2000, 19......
] and P/M TiAl based alloy [15]. In this work, a comprehensive constitutive model for describing the relationship among the flow stress, strain rate and temperature was proposed with the compensation......
. Characteristics of nanophase TiAl produced by inert gas condensation [J]. Journal of Materials Research, 1992, 7(11): 2962-2970. [20] LIU Y, LIN I K, ZHANG X. Mechanical properties of sputtered silicon......
