Influence of starting powder on the microstructure of WC–Co hardmetals obtained by spark plasma sintering
作者： S.G. Huang , K. Vanmeensel , L. Li , O. Van der Biest , J. Vleugels
DOI: 10.1016/J.MSEA.2006.12.145
关键词: Surface layer 、 Grain growth 、 Spark plasma sintering 、 Microstructure 、 Agglomerate 、 Homogeneous microstructure 、 Sintering 、 Materials science 、 Homogeneity (physics) 、 Metallurgy
摘要: Abstract WC–Co hardmetals using different starting powders were densified by spark plasma sintering (SPS). Sintering cycles performed at 1240 °C for the WC–12 wt.% Co–0.45 wt.% VC grade and 1280 °C WC–6 wt.% Co grade, applying a pressure of 60 MPa in combination with heating rate 100 °C/min. The influence carbon content homogeneity on final microstructure mechanical properties was investigated. A thin graded surface layer is observed case slightly deficient powder. agglomerates SPS materials obtained from lower energetically multi-directionally mixed powder, whereas homogeneous when attritor-milled or chemically synthesized powder adjusted balance. microstructures are related to measured properties.
core.ac.uk
kuleuven.be
elsevier.com
sci-hub.se 参考文章(7)
D. K. Shetty, I. G. Wright, P. N. Mincer, A. H. Clauer, Indentation fracture of WC-Co cermets Journal of Materials Science. ,vol. 20, pp. 1873- 1882 ,(1985) , 10.1007/BF00555296
Z FANG, O ESO, Liquid phase sintering of functionally graded WC-Co composites Scripta Materialia. ,vol. 52, pp. 785- 791 ,(2005) , 10.1016/J.SCRIPTAMAT.2004.12.008
B.K Kim, C.J Choi, Fabrication of nanostructured powders by chemical processes Scripta Materialia. ,vol. 44, pp. 2161- 2164 ,(2001) , 10.1016/S1359-6462(01)00896-X
Zhengyi Long, Yong Liu, Haibing Wang, Jiangao Yang, Baiyun Huang, Formation mechanism of cobalt-gradient structure in Wc-Co hard alloy Journal of Materials Science. ,vol. 39, pp. 4397- 4399 ,(2004) , 10.1023/B:JMSC.0000033437.75050.5D
Faming Zhang, Jun Shen, Jianfei Sun, The effect of phosphorus additions on densification, grain growth and properties of nanocrystalline WC-Co composites Journal of Alloys and Compounds. ,vol. 385, pp. 96- 103 ,(2004) , 10.1016/J.JALLCOM.2004.04.110
S. Luyckx, C. Osborne, L. A. Cornish, D. Whitefield, Fine Grained WC–VC–Co Hardmetal Powder Metallurgy. ,vol. 39, pp. 210- 212 ,(1996) , 10.1179/POM.1996.39.3.210
Seung I Cha, Soon H Hong, Byung K Kim, Spark plasma sintering behavior of nanocrystalline WC-10Co cemented carbide powders Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 351, pp. 31- 38 ,(2003) , 10.1016/S0921-5093(02)00605-6