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, Changsha 410083, China) Abstract: The ultrafine pyrochlore-type tungsten trioxide powders were hydrothermally synthesized from sodium tungstate solution by adding pure WO3 powders to the reaction system...键词:钨酸钠溶液；水热处理；焦绿石型三氧化钨；超细粉体 中图分类号:TF841.1 文献标志码:A Preparation of ultrafine pyrochlore-type tungsten trioxide powder by hydrothermal......
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Research on Ultrafine Tungsten Carbide-Cobalt (WC-Co) Cemented Carbide Rods of Miniature Drills for Highly Integrated Printed Circuit Board (PCB)Xiaoliang SHI, Gangqin SHAO, Xinglong DUAN...;Nanocrystalline tungsten carbide-cobalt (WC-Co) composite powders produced through spray thermal decomposition-continuous reduction and carburization technology were used to prepare φ3.25 mm×38 mm......
匀的球形超细α-Al2O3粉体. 关键词:超细α-Al2O3粉体；均匀沉淀法；分散；球形 中图分类号:TF 123 文献标识码:A Preparation of ultrafine α-Al2O3 powder by homogenous precipitation XIAO Jin, WAN Ye, ZHOU Feng... by the precipitation reaction of aluminum sulfate and urea, which was calcined to get ultrafine α-Al2O3. The effects of mole ratio of CO(NH2)2 to Al2(SO4)3, initial concentrations of Al2(SO4)3, reaction temperature......
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studied in recent years, which exhibit promising results. The availability of nanoscale tungsten powders is the key point to prepare ultrafine-grained tungsten alloys. There are several effective routes...-gel method was also used to produce W-1.0wt.%Y2O3 powders [20]. LIU et al [13] employed the aforementioned three doping routes to fabricate the ultrafine-grained Mo-La2O3. They showed that the LL......
Induction plasma spheroidization of tungsten and molybdenum powders JIANG Xian-Liang (蒋显亮)1, M.Boulos2 1. Institute of Surface and Coatings Technology, School of Materials Science and Engineering... in induction plasma were studied. Scanning electron microscopy was used to examine the morphology and the cross section of plasma-processed powders. X-ray diffraction was used to analyze the oxides formed......
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