Paper Title:
Fabrication of Graded WC-Co Cemented Carbides by a Lamination Method
  Abstract

WC-Co tapes with different Co contents were prepared by rolling the mixtures of WC-Co powders and polymer binders, and layered WC-Co green compacts with discontinuous distribution of Co contents were obtained by laminating the green WC-Co tapes together. After burning off the binders and other organic composition in H2 atmosphere, the green compacts were sintered in vacuum. Microstructure of both the green and the sintered tapes were observed by scanning electron microscope. An electron probe microanalyser was used to measure the linear distribution of Co element in the layered WC-Co cemented carbides. Sintering densification and mechanical property of the multilayered WC-Co alloys were also investigated and compared with those of conventional WC-Co alloys with nominal Co contents of 8% and 12%, respectively. It was shown that by controlling sintering temperature and time, a continuous graded distribution of Co composition can be realized in the laminated WC-Co alloys, with more Co-rich phase in the original high Co content side (12%). Furthermore, the graded WC-Co cemented carbides can realize a combination of high hardness and high strength.

  Info
Periodical
Advanced Materials Research (Volumes 105-106)
Edited by
Wei Pan and Jianghong Gong
Pages
673-675
DOI
10.4028/www.scientific.net/AMR.105-106.673
Citation
J. G. Cheng, J. C. Zhu, L. Wan, H. G. He, "Fabrication of Graded WC-Co Cemented Carbides by a Lamination Method", Advanced Materials Research, Vols. 105-106, pp. 673-675, 2010
Online since
April 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Romário Mauricio Urbanetto Nogueira, César Edil da Costa
Abstract:Hardmetal is usually processed by the conventional powder technology techniques: mix of WC + Co powders compacted and liquid phase sintering....
238
Authors: Zhi Guo Gao, Hua Wang, Yan Qing Feng, Yi Sheng Zhao
Intelligent Optimization Design
Abstract:Steel-bonded cemented carbide sheet considered as cladding was successfully bonded with carbon steel plate by a technological combination of...
947
Authors: Rui Zhou, Jian Fei Sun, Ying Jun Yang
Chapter 1: Material Science
Abstract:Microstructure and mechanical properties of W9Mo3Cr4V high speed steel fabricated by spray deposition have been studied. Spray deposited...
714
Authors: Hao Fu, Xiang Zhao Zhang, Gui Wu Liu, Zi Wei Xu, Tie Zheng Pan, Guan Jun Qiao
Chapter 3: Ceramics for Structural Applications
Abstract:The wetting and spreading of molten Cu, Ag and Ag-28Cu (wt.%) on the WC-Co cemented carbide were investigated by the sessile drop technique...
555