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resistance of low thermal expansion alloy IN909 was studied. The composition and structure of the oxidation layer were analyzed. It is found that the oxidation initiates at the grain boundaries. During... to the oxidation layer. Key words: IN909 alloy; low thermal expansion superalloy; oxidation; phosphorus 1 Introduction Low thermal expansion superalloys are helpful to improve the efficiencies of aero......
Preparation and Characteristic of Glass-Ceramics with Super Low Thermal Expansion Coefficient Wang Kun1,Zhao Chunxia1,Jiang Hui1,Chen Guangle1,Wang Shengjun1,Fan Shigang1 (1.Research Institute of Synthetic Crystals, Beijing 100018, China) Abstract:The preparation technics of glass-ceramics with super low coefficient of thermal expansion containing β-quartz solid solution as a main crystal......
As a good electronic packaging material, it should have high thermal conductivity to dissipate the heat generated during the operation of many current electronic systems, and low thermal expansion... in electronic packaging due to their high thermal expansion and density. The copper matrix-carbon fibre (Cf) composite may fulfill some requirements for the negative axial CTE and low density of Cf [1-3......
of the magnetization curve measured by a SQUID in a low field of 40 kA/m. The thermal expansion was measured by X-ray dilatometry on a diffractometer. For the determination of the lattice parameters... Thermal expansion anomaly and spontaneous magnetostriction of Dy2AlFe14Mn2 compound WANG Hai-yun(王海云)1, ZHAO Miao(赵 淼)2, GAO Yan(高 艳)2, ZHOU Yan(周 严)1, FU Bin(傅 斌)2, YAN Da-li(严达利)2 1. School......
Thermal expansion anomaly and magnetic properties of Nd2AlFe11Mn5 compound ZHAO Miao(赵 淼), ZHOU Yan(周 严), FU Bin(傅 斌), HAO Yan-ming (郝延明) Department of Physics, Tianjin Normal University...; Abstract: Materials with negative thermal expansion have many important......
and 50%o of low fused temperature frit has an average TEC of 19.2× 10-6/° C from room temperature to 450°C, which is much higher than the common porcelains. Key words:thermal expansion coefficient...PREPARATION OF HIGH THERMAL EXPANSION COEFFICIENT PORCELAINS FUSED TO METALS J.P.Yang1,J.Q.Wu1 (1.Dept. of Inorganic Materials, South China University of Technology, Guangzhou 510640, China......
Aging and thermal expansion behavior of Si3N4p/2024Al composite fabricated by pressure infiltration methodCHEN Guo-qing1, YANG Wen-shu1, 2, MA Kang1, Murid HUSSAIN 2, JIANG Long-tao1, WU Gao-hui1(1..., Italy)Abstract:The aging and thermal expansion behaviors of Si3N4p/2024Al composite fabricated by pressure infiltration method were investigated. The peak-aging time and peak hardness both decrease......
higher thermal conductivity(TC) and more suitable coefficient of thermal expansion(CTE) should be adopted. Moreover, the low density is desirable in avionics and portable systems such as lap-top... the generated heat from devices. Diamond has a extremely high modulus, a very low coefficient of thermal expansion and the highest thermal conductivity in all natural materials[8-10]. Therefore......
Coefficient of thermal expansion of stressed thin films WANG Zheng-dao(王正道), JIANG Shao-qing(蒋少卿) Institute of Mechanics, School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China Received 10 April 2006; accepted 25 April 2006 Abstract: A new technique was proposed to determine the coefficient of thermal expansion (CTE) of thin films at low temperature......
composites which have the highest specific strength and specific stiffness[1]. They have many advantages such as low density, low coefficient of thermal expansion(CTEs), high thermal and electrical... Nonlinear temperature characteristic of thermal expansion of Grf/Mg composites SONG Mei-hui (宋美慧), XIU Zi-yang(修子扬), WU Gao-hui(武高辉), CHEN Guo-qin(陈国钦) School of Materials Science......
