Effect of La Addition in W Skeleton on Microstructure and Properties of WCu Alloy

Abstract:

In order to improve properties of WCu alloy, the different La were introduced into W skeleton during sintering process. The hardness, electrical conductivity and the compression stress were tested, and the microstructure and composition were characterized by a scanning electron microscope. The results show that an appropriate rare earth La addition can purify W/W interface, enhance the bonding of W /W, and improve the densification and the integral properties of WCu alloy. In the range of experiments, WCu alloy with 0.3wt% La addition has the largest hardness value of 198HB and the maximum compression stress of 823N/mm2. In comparison with that without La addition, 0.3wt%La addition decreases the electrical conductivity slightly, but improves the hardness and the maximum compression stress significantly, which are increased by 23.6% and 57.2%, respectively.

• Periodical: Advanced Materials Research (Volumes 160-162)
• Pages: 1606-1610
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.160-162.1606
• Online since: November 2010
• Authors: Bo Wang, Shu Hua Liang, Xian Hui Wang, Jun Tao Zou, Peng Xiao
• Keywords: Compression Stress, Electrical Conductivity, Hardness, Rare Earth La, WCu Alloy

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