|
|
|
| Study on the properties of spherical cast tungsten carbide powders prepared by different methods |
| WANG Lei，LIU Xin，XIE Huan-wen，ZOU Li-ming，CAI Yi-xiang |
| （Guangdong Institute of Materials and Processing，Guangdong Academy of Sciences，Guangzhou 510650，China） |
|
|
|
|
Abstract The spherical cast tungsten carbide powder is a kind of new potential wear-resistance ceramic material. The chemical composition，morphology，microstructure，phase composition，micro-hardness，flowability，loose density and other characteristics of spherical cast tungsten carbide powders prepared by different methods were investigated. The results indicate that，compared with plasma re-melting spheroidizing and induction re-melting spheroidizing，the deviation value between the total carbon content and the theoretical carbon content of spherical cast tungsten carbides fabricated by plasma rotation electrode atomization method is the smallest，and the content of free carbon and impurities are the lowest. Furthermore，the corresponding powder particles fabricated by plasma rotation electrode atomization method are denser，the eutectic microstructure is finer and microhardness is higher than those fabricated by other methods. Spherical cast tungsten carbides fabricated by induction re-melting spheroidizing have the best flowability and the highest loose density.
|
|
Received: 18 May 2016
Published: 10 August 2017
|
|
|
|
| [1]胡传忻.表面处理技术手册[M].北京：北京工业大学出版社，1997:1-5.[2]佘建芳. 球形铸造碳化钨硬面材料生产新方法[J]. 硬质合金,1998，15(4):241-245.[3]黄培云.粉末冶金原理[M].北京:冶金工业出版社,1997.[4]周尧和,胡壮麒,介万奇.凝固技术[M].北京:机械工业出版社, 1998.[5] HAHN R,LuederitzE,Sattelberger S, et al. New Process for theproduction of cast tungsten carbide [J]．Metal Powder Report, 1986,41(12):887-888．[6] PYZBT OWICZ J. KUSIN SKI J. Strueture of laser cladded tungsten carbide composite coatings[J]. Journal of Materials Pro-cessing Technology, 2001, 109(1):154-160.[7] 马 壮, 李晓东, 时海芳, 李智超, 董世知. 含WC颗粒高锰钢堆焊层的组织及耐磨性能[J]. 机械工程材料. 2012, 36(6):23-36[8]邹序枚.碳化钨硬面材料和硬面技术[J].硬质合金,1991. 8(1): 36-43.[9]顾乃粒,桂业炜.硬面用合金粉末的生产与发展[J].粉末冶金工业, 1997, 7(Suppl.):108-117.[10]Volkogon V.M., Avramchuk S.K., Kotlyar D.A., Kuzmenko N.N., Kulak L.D., Datskevich O.V. Structure and properties of atomized powders of tungsten carbide WC + W2C alloys Rock cutting and metalworking tools - machinery and technology of its manufacture and use, The Collection of scientific works – Kyiv, Institute of superhard materials by V.N. Bakulofthe NASU, 2010. - Publication 13 - p. 414-419. |
|
|
|
2017, Vol. 27 
