| 陶瓷与金属梯度过渡层的自蔓延高温合成 |
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| 引用本文： | 孙德超,柯黎明,邢丽,刘鸽平.陶瓷与金属梯度过渡层的自蔓延高温合成[J].焊接学报,2000,21(3):44-46. |
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| 作者姓名： | 孙德超 柯黎明 邢丽 刘鸽平 |
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| 作者单位： | 南昌航空工业学院,材料工程系,南昌,330034 |
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| 基金项目： | 江西省自然科学基金，航空基金，965504，97G56001，， |
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| 摘 要： | 陶瓷以优良的性能正成为极具潜力的新型结构材料,在其应用过程中往往需与金属连接,但因两者间的组织结构及物化性质相差悬殊,往往得不到满意的连接结果.在陶瓷与金属间用一定厚度的成分和结构呈梯度变化的梯度过渡层作为连接二者的焊缝层,是解决陶瓷与金属连接时所存在问题的较好措施之一.本文将自蔓延高温合成技术引入焊接领域,探索了陶瓷-金属焊接时接头中梯度过渡层的制备工艺.试验结果表明,采用自蔓延高温合成技术可成功地制取陶瓷-金属的梯度过渡层,这种过渡层可以有效地缓和因线膨胀系数差在陶瓷-金属焊接时界面处所产生的热应力,为获得综合性能良好的异种材料焊接接头开辟了一条新途径.
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| 关 键 词： | 自蔓延高温合成 焊接 梯度过渡层 |
| 修稿时间： | 1999-06-08 |
Self-propagating High-temperature Synthesis of Gradient Transitional Layer Between Ceramics and Metal |
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| SUN De-chao.Self-propagating High-temperature Synthesis of Gradient Transitional Layer Between Ceramics and Metal[J].Transactions of The China Welding Institution,2000,21(3):44-46. |
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| Authors: | SUN De-chao |
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| Abstract: | Advanced ceramics are becoming the new type engineering materials because of their excellent performances.It is often required to join them to metals in the engineering application.However,it is difficult to get satisfactorily joint due to the great difference in the microstructure and physicalchemical characteristics between ceramic and metal.The problem may be solved by using the gradient transitional layer,within which the composition and microstructure can vary gradiently,as a weld interlayer between ceramic and metal.In this paper,the Self-propagating High-temperature Synthesis(SHS)technique is introduced to the welding between ceramic and metal and the synthesis process of the gradient transitional alyer of ceramic metal is investigated.The results shown that the gradient transitional layer of ceramic/metal can be fabricated successfully by means of SHS technique and the thermal stress at the interface of ceramics and metal caused by the difference in expansion coefficient between them can be effectively moderated during welding.This method may set up a new way for welding dissimilar materials to obtain a weld with better performances. |
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| Keywords: | self-propagating high-temperature synthesis(SHS) welding gradient transitional lay |
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