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Bi对Sn-Zn基无铅钎料合金组织与性能的影响陈伟1,胡强1,张富文2(1.北京市北京有色金属研究总院国家有色金属复合材料工程技术研究中心2.北京康普锡威焊料有限公司,北京 100088)摘 要:在Sn-(5~9)Zn二元钎料合金中加入1%~3%的Bi,研究Sn-Zn-Bi三元钎料合金的组织,熔化特性及润湿性.在Sn-Zn二元钎料合金结晶过程中,Sn-(5~7)Zn二元钎料合金形成富β-Sn的初生相,随着Zn量的增加,Sn-Zn二元钎料合金形成富Zn的初生相.添加Bi明显改善了钎料合金的润湿性能,当Bi添加量为......
microstructures, and no secondary phases are observed at the grain boundaries or triple grain junctions. The presence of CaF2 induces liquid phase sintering, which promotes the growth of AlN grains... ceramics; transmittance; microstructures AlN因其高热导率, 低介电常数和与硅相近的热膨胀系数, 作为一种优良的基板和封装材料[1, 2], 引起了人们的广泛关注. 同时, AlN在红外波段具有潜在的透射能力及良好的力学性能和耐腐蚀性, 是制造红外窗口和各种罩体的优良材料[3]. 要制备透过率良好的透明AlN陶瓷, 所获得的烧......
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Microstructures and Composition of Ceramic Coatings on Aluminum Produced by Micro-Arc Oxidation SHEN De-jiu1,WANG Yu-lin1,XING Guang-zhong1,Gu Wei-Chao1 (1.Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, P. R. China) 摘要:Microstructures and phase composition of the ceramic coatings formed on pure aluminum by heteropolar pulsed......
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Microstructures and mechanical properties of extruded Mg-1Mn-3.5Y and Mg-1Mn-1Y-2.5Nd alloys FANG Da-qing(房大庆)1, JIANG Zhong-hao(江中浩)1, BI Guang-li(毕广利)1, LI Rong-guang(李荣广)2, LI Guang..., while the Mg-1Mn-1Y-2.5Nd alloy exhibits the dimple fracture mode. Key words: magnesium alloys; earth elements; microstructures; deformation behavior; mechanical properties 1 Introduction......
Magnetic Microstructures of 2:17 Type Sm(Co,Fe,Cu,Zr)z Magnets Detected by Magnetic Force Microscopy Han Baoshan1,Xia Ailin1,Guo Zhaohui2,Li Wei2 (1.State Key Laboratory of Magnetism, Beijing... 100081, China) Abstract:The magnetic microstructures of 2:17 type Sm(Co,Fe,Cu,Zr)z magnets were detected by magnetic force microscopy.Comparing the microstructures of the specimens coated......
Effect of Heat Treatment on Microstructures And Properties of Mg-9Gd-3Y-0.3Zr Cast Alloy Yang Sheng1,Yi Danqing1,Yao Sujuan1,Li Wangxing2 (1.School of Materials Science and Engineering, Central South University, Changsha 410083, China;2.Zhengzhou Research Institute of CHALCO, Zhengzhou 450041, China) Abstract:Microstructures, aging hardness and mechanical properties of as-cast Mg-9Gd-3Y-0.3Zr......
Effect of minor RE addition on microstructures and mechanical properties of AZ31 magnesium alloy ZHONG Hao(钟 皓), YAN Yun-qi(闫蕴琪), ZHANG Hui(张 慧), WENG Wen-pin(翁文凭), CHEN Qi(陈 琦) Suzhou Institute... was homogenized, hot-rolled and annealed. Optical microscopy, scanning electron microscopy and X-ray diffractometry were employed to characterize the microstructures of AZ31 alloy with RE addition. And micro......
J. Cent. South Univ. Technol. (2011) 18: 290-295 DOI: 10.1007/s11771-011-0693-7 Microstructures, mechanical properties and compressive creep behaviors of as-cast Mg-5%Sn-(0-1.0)%Pb alloys WANG... 2011 Abstract: The microstructures, tensile properties and compressive creep behaviors of Mg-5%Sn-(0-1.0)%Pb (mass fraction) alloys were studied. The microstructures of the Mg-Sn-Pb alloys consist......