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; Abstract: Materials with negative thermal expansion have many important.... The negative thermal expansion coefficient of Nd2AlFe11Mn5 compound is found by X-ray diffraction in temperature range of 122-203 K. There exists an anisotropic and strong positive spontaneous......
Th2Ni17-type structure. Zero thermal expansion and negative thermal expansion were found in Dy2AlFe14Mn2 compound in the temperature range from 184 to 264 K, and from 264 to 383 K, respectively, by X... with increasing temperature, and then decreases with further increasing temperature. Key words: Dy2AlFe14Mn2 compound; thermal expansion; spontaneous magnetostriction; negative thermal expansion 1 Introduction......
Crystal structure and negative thermal expansion properties of solid solution Er2W3-xMoxO12 PENG Jie(彭 杰)1, 2, LIU Xin-zhi(刘新智)3, GUO Fu-li(郭富丽)4, HAN Song-bai(韩松柏)3, LIU Yun-tao(刘蕴韬)3... method. Their crystal structures and negative thermal expansion properties were studied by high temperature X-ray powder diffraction and the Rietveld method. All samples with rare earth tungstates......
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... Thermal expansion of MWCNT-reinforced copper composite XU Long-shan(许龙山), CHEN Xiao-hua(陈小华), PAN Wei-ying(潘伟英), LI Wen-hua(李文华), YANG Zhi(杨 植), PU Yu-xing(蒲玉兴), YI Guo-jun (易国军) , YI Bin......
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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... technology. M40 graphite fibers were reinforced to AZ91D and ZM6, their thermal expansion behaviors of M40/AZ91D and M40/ZM6 composites in the temperature range from 20 to 490 ℃ were investigated......
Characterization of the negative thermal expansion material Zr1-xHfxW2O8SHEN Rong WANG Cong WANG Tianmin DONG Cheng, CHEN Hong, and LIANG Jingkui1) Center of Material Physics and Chemistry, School... property of isotropic negative thermal expansion in a large wide temperature range, which makes it have a number of important potential applications. The cubic Zr1-xHfxW2O8 (x = 0,0.3, 0.5, 0.7, and 1.0......
Crystal structure and negative thermal expansion of solid solution Lu2W3-xMoxO12Jie Peng1,2), Xin-zhi Liu3), Fu-li Guo4), Song-bai Han3), Yun-tao Liu3), Dong-feng Chen3), and Zhong-bo Hu2) 1...="ChDivSummary">A new series of solid solutions Lu2W3?xMoxO12 (0.5≤x≤2.5) were successfully synthesized by the solid-state method. Their crystal structure and negative thermal expansion properties were......
a negative effect. The coefficient of thermal expansion of glass showed an apparent linear relation to the contents of these three raw materials, from which an estimation model was built, to calculate...Study on thermal expansion behavior of Dy2O3- Al2O3- SiO2 glass HE Huaqiang1,LIU Yuzhu1,ZHUANG Weidong1,GENG Zhiting2 (1.National Engineering Research Center for Rare Earth Materials, General......
, 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 is attributed to the tetragonal-cubic phase transition. A rationalization for the negative thermal expansion of PbTiO3 is due to the decrease of anion-anion repulsion as polyhedra become more regular......