中文摘要：

核心壳组织了钴涂的钨碳化物(WC/Co ) 合成粉末被断断续续的电极淀积准备。象 WC/Co 的形成上的当前的密度，单个免职脉搏， pH 值和表面活化剂那样的进程参数的影响被扫描电子显微镜学(SEM ) 调查并且描绘，电气化学的车站， acidometer 和 X 光检查衍射(XRD ) 技术。有 54% 钴内容的合成粉末在 40 牵獥映潲 ? 的操作温度与 10g dm ³ WC 粉末的负担和 600r min ¹ 的激动人心的速度在 16A dm ², 的当前的密度被制作 ??? 琠?????. 吗？

英文摘要：

Core-shell structured cobalt coated tungsten carbide（WC/Co） composite powders were prepared by intermittent electrodeposition. The influence of process parameters such as current density, single deposition pulse, p H value and surfactants on the formation of WC/Co was investigated and characterized by scanning electron microscopy（SEM）, electrochemical station, acidometer and X-ray diffraction（XRD） techniques.The composite powders with 54% cobalt content were fabricated at a current density of 16 A dm-2, with a load of 10 g dm-3WC powders and a stirring speed of 600 r min-1at an operation temperature of 40 ± 2 °C,and 90% current efficiency was obtained with a single deposition pulse of 1.5 min and single stirring pulse of 2 min during 12 min efficient electrodeposition time. The uniformly distributed WC/Co powders could be obtained in the cobalt electrolyte containing 300 mg dm-3PEG-2000. The spherical cobalt grains coated WC particles were prepared in the p H 4-5 electrolyte at the Co deposition rate of 0.58 g min-1. A practical process for high efficient production of WC/Co powders by electrodeposition was developed in the present work.