摘要
W-Cu梯度功能材料的高W含量侧具有低热膨胀率、高强度和耐热流冲蚀等特点,高Cu含量的另一侧具有高导热性能,而中间过渡层可使内部热应力获得良好的缓和;该材料作为热沉材料、面向等离子体材料以及触头材料等的应用具有非常大的发展潜力,其研究受到广泛的重视。本文作者对W-Cu梯度材料的研究进展进行综合评述,介绍了W-Cu梯度功能材料的设计、制备及评价方法;根据其工作环境,着重对W-Cu梯度功能材料的致密性,热膨胀,热导率,热损蚀和热冲击等性能进行评价,并对W-Cu梯度功能材料的进一步发展作了展望。
One side with high W of the W-Cu functionally graded materials（FGMs） has low thermal expension coefficient,high strengh and resisting heat flow erosion;the other side with high Cu has high thermal conductivity;and its transitional layers make the internal thermal stress being alleviated well.Therefore,the future applications of the W-Cu FGMs have great development potential as heat sink materials,plasma facing materials,contacts materials etc,and its research is taken into account abroad.In the present paper,research progress concerned with W-Cu FGMs is reviewed;the methods of design,fabrication and evaluation are summarized;based on its working conditions,the properties of compactness,thermal expansion,thermal conductivity,thermal damage and thermal shock are evaluated.Finally,the research development tendency is also elucidated.
出处
《粉末冶金材料科学与工程》
EI
2010年第5期413-420,共8页
Materials Science and Engineering of Powder Metallurgy
基金
国家杰出青年科学基金资助项目(50125415)
