·330· 北京科技大学学报 1998年第4期 成各组元的单相氧化物.产物中的物相数为4相，其中包含有结晶水的〔Co(en)WO,·xH0 和Ni(en)WO,xH,O)结构复杂的络合物相. (2)用自制的“x”溶剂配制的C溶液及(C+D)溶液，在试验条件下能够完全转换成各组 元的单相氧化物.产物中的物相数为2相，复合氧化物粉末颗粒中不含结晶水 (3)采用(C+D)溶液，在试验条件下获得的复合氧化物粉末颗粒形貌为球形.随机统计 平均直径为32.7nm,BET粒径<30nm;粉末中大部分颗粒为非晶，微晶状态. 参考文献 1 McCadlish L E,Kear B H.Kim B K.The Production of Nanophase Composite Powders.Nanostruct Mater,1992,1(2):119 2 Zhang Liying,Wu Chengyi.New Type of WC-Ni-Fe Hard Metal.In:Powder Metallurgy World Congress.Kyoto,1993.538 3 Zhang Liying,.Wu Chengyi.WC/(Ni·Fe)超硬合金e结合体组成D影响.n:日中技术情报交换会一 第二回.機能性複合材料研究會.北九州，1996.10 4张丽英，吴成义.一种制备碳化钨-镍-铁系纳米级硬质合金复合粉的工艺及设备.中国专利，97122085. 1997 5刘永福，陈越.超细硬质合金的研究与应用应用.粉末冶金材料科学与工程，1997(2)：76 Mccandlish L E,Kear B H,Bhatia S J.Spray Conversion for the Production of Nanoph Composite Powders.WO91/07244.1991 Making W-Ni-Fe System Nanomic Composite Oxied Power and Its Futures Zhang Luying Wu Oinghua Wu Chengyi Wu Zhiyong 1)Material Science and Engineering School.UST Beijing,Beijing 100083 China 2)Beijing Ressearch Institute of Agricultural Mechanic Science,Beijing 100083 ABSTRACT The Nanomic composite oxied power of (W,Ni,Fe)system is made in a ultrasionic spray heat-transfer device using rapid mixig method of alkalinous solution of H,WO,,NiCl,and FeCl,solution.The phase composition of the composite oxide power and its relation to the flux used are studied by means of X-ray diffraction and (XRD)TEM analysis.The shape characteristics of power particle and the particle range are studied as well.The results show that homogenous composition of composite oxide power can be made by the methods of rapid mixing of the above two solutions and ultrasonic spray heat-transfer methods.When the self-made oxide flux is used,the phase composition of composite oxide power is WO3,NiO.The powder particle range is 15~50 nm and the particle shape is near to sphere. KEY WORDS tungsten carbide;composite powder;superfine powder