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中文摘要：
采用两种粒径的氧化铜粉末和粒径为1.5μm的三氧化钨粉末来制备高纯度的CuWO4粉末,分别通过控制CuWO4粉末在360和750℃两个阶段的氢气还原作用,制备出钨包覆铜纳米复合粉体。复合粉体的微观形貌,组织结构与颗粒尺寸采用扫描电子显微镜（SEM）,X线衍射分析仪（XRD）和透射电子显微镜（TEM）进行测试,激光粒度测试仪（LPSA）用来测试CuWO4粉末的粒度。由小粒度CuWO4粉末制备出的钨包覆铜纳米复合粉体的钨包覆层厚度小,氢气还原制备的钨包覆铜复合粉体的平均粒径约50nm。
英文摘要：
Two kinds of copper oxide with different particle sizes and 1.5 μm tungsten trioxide powder were employed to prepare the high-purity CuWO4 powder. By two stage hydrogen-reduction of the CuWO4 at 360 and 750 respectively and continuously, nano-composite powder of tungsten coated copper was synthesized. Micro-morphology, crystallization-components and grain-size of the products were investigated by scanning electron microscope （SEM）, X-ray diffract meter （XRD） and transmission electric microscope （TEM） and laser particle size analyzer （LPSA） was also applied to measure the particle-size of CuWO4 . The W film thickness of nano-composite powder synthesized by smaller-sized CuWO4 is thinner than that made from bigger-sized CuWO4 . The average particle size of nano-composite powder of tungsten coated copper is about 50 nm under the two-stage hydrogen reduction.
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