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between 50 and 750 °C in air with a flow rate of 100 mL/min. About 8 mg sample was filling into an alumina pan (aluminum oxide or Al2O3, to protect the reaction between the selected pan......
) at the accelerating voltage of 15 keV. Before each analysis, the powder samples were mounted on an aluminum stub with the help of a double-stick carbon conducting tape, and then sputtered with gold......
Trans. Nonferrous Met. Soc. China 31(2021) 2081-2101 Typical roles of metal ions in mineral flotation: A review Zhi-yong GAO1,2, Zhe-yi JIANG1,2, Wei SUN1,2, Yue-sheng GAO3 1. School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China; 2. Key Laboratory of Hun......
related to F1. For example, printery and alloy melting factories often cause Mn and Cr contamination. Additionally, coal mining activities contribute greatly to Mn, Ni, Cr and As pollution in the soils......
, HULTMAN L, JANSSON U. Magnetron sputtered W-C films with C60 as carbon source[J]. Thin Solid Films, 2003, 444(1/2): 29-37. [25] MASSALSKI T, OKAMOTO H. Binary alloy phase diagrams[M]. Materials Park, Ohio......
铸造,浸渗法和放电等离子烧结制备方法的优点和缺点,讨论热导率和热膨胀系数等热物理性能的影响因素,并对其发展前景进行展望. 关键词:电子封装；Diamond/Al复合材料；热导率；热膨胀系数 中图分类号: TB333 文献标志码:A Research progress of diamond/aluminum composites.../aluminum composites, the fourth generation of electronic packaging materials, have attracted much attention for their remarkable comprehensive properties, such as high thermal conductivity, low coefficient......
] Fig. 1 Process comparative figure of microwave and vacuum sintering of WC-8Co alloy[6] 2.2 微波与烧结材料的作用机制 由于不同材料对微波的感应机制和吸收程度不同,因此根据材料和微波之间的耦合关系将材料分为[32]吸波材料,透波材料和反射材料,但是这样的划分并不是绝对的,因为材料的吸波特性...: Central South University, 2010. [54] 周承商. 微波烧结W-Ni-Fe高密度合金研究[D]. 长沙: 中南大学, 2009. ZHOU Cheng-shang. Research on microwave sintering of W-Ni-Fe high density alloy[D]. Changsha: Central South University......
;Schematic diagram of binder damage in multi-ligament zone of WC-Co alloy[24] 2.1 裂纹断裂路径 在研究合金断裂机理的过程中,很多研究者都同时研究其断裂路径.GURLANA[25]认为无论是低Co还是高Co合金,断裂都有避开Co相的倾向,多发生在碳化物相和WC-WC边界上.当WC晶粒尺寸不超过1~2 μm时,裂纹仅分布在...带中也会出现微孔和空洞[31].钝的裂纹尖端和内部孔隙的长大和合并会导致韧带破裂,裂纹失稳.韧带区的长度大致为合金碳化物平均自由程的5倍,EVANS等[32]将其称为多韧带区. 图2 WC-Co裂纹传播路径[28] Fig. 2 Crack propagation path of WC-Co alloy[28] 2.2 硬质合金的疲劳裂纹扩展模式 硬质合金的疲......
simulation of copper-steel composite stave[D]. Beijing: Beijing Jiaotong University, 2009. [17] 王碧文, 王 涛, 王祝堂. 铜合金及其加工技术[M]. 北京: 化学工业出版社, 2006. WANG Bi-wen, WANG Tao, WANG Zhu-tang. Copper alloy......
, ZHENG Shao-hua. Analysis of drying mechanism on the tape casting laminar green tape of Mo-(Fe-B)-Fe mixed alloy powders[J]. Journal of Ceramics, 2002, 23(4): 211-216. [53] Salam L A, Matthews R D......
