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that the high pressure treatment can refine the grain and increase the thermal expansion coefficient of the Cu-Zn alloy, resulting in that the thermal expansion coefficient exhibits a high peak value on the α-T curve, and the peak value decreases with increasing the pressure. Key words: Cu-Zn alloy; high pressure heat treatment; microstructure; thermal expansion coefficient 1 Introduction Cu-Zn alloys......
Analytical Model of Elastic Modulus and Coefficient of Thermal Expansion for 2.5D C/SiC Composite孔春元,孙志刚,NIU Xuming,SONG YingdongCollege of Energy and Power Engineering and State Key Laboratory.... The fiber direction of warp is defined by cosine function to simulate the undulation of warp, and based on uniform strain assumption, analytical model of the elastic modulus and coefficient of thermal......
ceramics. 关键词:Al-Si alloy; coefficient of thermal expansion; sintering; casting; strontium addition; modification; [全文内容正在添加中] ...:In order to prepare a hypereutectic Al-Si alloy with low coefficients of thermal expansion (CTE), Al-50was produced by powder metallurgy (P/M) and ingot metallurgy (I/M). P/M specimen was prepared......
. The variation of the lattice parameter of MIT crystals with temperature was determined and the thermal expansion coefficient was deduced to be 6.18×10-6 K-1. The results of the thermal expansion... coefficient and thermal conductivity of MIT as a function of temperature is essential to evaluate the thermophysical properties under temperature gradients. So far, no details concerning the thermal expansion......
casting, infiltration and spark plasma sintering were analyzed. Factors related to thermophysical properties, such us thermal conductivity and coefficient of thermal expansion were discussed. Finally, the relevant problems and development tendency were also addressed. Key words: electronic packaging; diamond/aluminum composites; thermal conductivity; thermal expansion coefficient 随着信息技术的飞速发展,电子元器件的集成度和发......
composites. The results show that the composites are dense and macroscopically homogeneous. With the increase of temperature, the mean linear coefficient of thermal expansion(CTE) at 25-200... to their tailorable thermo-physical properties. Key words: SiCp/Al composite; pressureless infiltration; thermal expansion coefficient; thermal conductivity 1 Introduction SiC particle with high volume......
Numerical simulation on thermal expansion coefficient of 3D braided C/C compositesChun-Xia Hu1,He-Jun Li1,Shou-Yang Zhang1,Yong-Shan Song21. State Key Laboratory of Solidification Processing, Carbon...">To effectively get the thermal expansion coefficient(CTE) of three-dimensional(3D) braided C/C composites and study the variations, a VC?? program with graphical user interfaces was obtained, based......
, positive thermal expansion from -150℃ to room temperature (RT) and above 490℃, and the negative thermal expansion in the temperature range of RT-490℃. A big jump of thermal expansion coefficient...Novel thermal expansion of lead titanateXING Xianran, DENG Jinxia, CHEN Jun and LIU GuirongDepartment of Physical Chemistry, University of Science & Technology Beijing, Beijing 100083, China摘 要......
diffractometry from room temperature to 1 000℃: linear coefficient a = 1.07 × 10-5 ℃-1 and bulk coefficient β= 3.20 × 10-5 ℃-1. Dilatometry was used to measure the extrinsic thermal expansion coefficient...Thermal expansion in dysprosium tungstate Dy10W2O21XINGXianran, ZHU Zhenqi, QI Xue, and LIU GuirongDepartment of Physical Chemistry, University of Science and Technology Beijing, Beijing 100083......
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