共搜索到21736条信息,每页显示10条信息,共2174页。用时:0小时0分2秒46毫秒
......
Extrusion behavior of micro-nanostructured Al-18%Si alloy powders LIANG Hong-yu(梁红玉)1, 2, OUYANG Zhi-ying(欧阳志英)1, MAO Xie-min(毛协民)1, HU Zhi-heng(胡志恒)1 1. School of Materials Science... Abstract: The extrusion of Al-Si alloy powders with different particle sizes allows manufacture of different products with unique microstructures and therefore with unique mechanical properties......
......
......
compact made by spherical metal or alloy powders can be easily achieved repeatedly because of high green density and homogeneous shrinkage of the molding made of the spherical particles. So, preparing spherical metal or alloy particles is very important to enhance the industry value and economy value of the powder, and expand its application area. 2 Experimental The raw powders used......
been successfully applied in Xiamen Golden Egret Special Alloy Co., Ltd[13-14]. And the production capacity of fine or ultrafine Co3O4 powders produced by this method has reached 500 t/a. 3.3... Preparation of ultrafine Co3O4 powders by continuous and controllable combustion synthesis WU Chong-hu1, 2 1. China National R&D Center for Tungsten Technology, Xiamen Tungsten Co., Ltd......
......
......
of Science and Technology, Seoul 136-791, Korea Received 20 April 2006; accepted 30 June 2006 Abstract: The microstructures of mechanical alloyed(MA) Ti-12%Mg alloy powders were examined using a high... distorts lattices are observed, compared with the as-milled microstructure. SURYANARAYANA[5] reported that Ti-Mg alloy powders usually form metastable solid solution due to heavy cold work during......
J. Cent. South Univ. (2012) 19: 2434-2439 DOI: 10.1007/s11771-012-1293-x Preparation of titanium powders by calciothermic reduction of titanium dioxide WAN He-li(万贺利)1,2,3,4, XU Bao-qiang(徐宝强... for titanium powders production, a calciothermic reduction process of pigment titanium dioxide (w(TiO2)>98%), based on the preform reduction process (PRP), was investigated by means of XRD, SEM and EDS......