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| Effect of Ni/Cu ratio on the properties and thermal expansion coefficient of 65WNiCu alloy |
| QIN Yingnan1，2，WANG Ling1，2，SHAN Dongdong2，XIONG Ning1 |
| （1. Advanced Technology and Materials Co., Ltd., Beijing 100081, China;2. ATTL. Advanced Materials Co.,
Ltd., Beijing 100094, China） |
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Abstract 65WNiCu alloy was selected as the research object. Five different compositions of tungsten nickelcopper alloys with different Ni-Cu ratio were prepared by powder metallurgy. The effects of Ni-Cu ratios on
mechanical properties and linear expansion coefficient of 65WNiCu alloy were studied. The results show that the
Ni-Cu ratio affects the sintering temperature of the alloys. With the increase of Ni-Cu ratio, the mechanical proper‐
ties of the five alloys decreases. The copper content affects the linear expansion coefficient of 65WNiCu alloy.
When the Ni-Cu ratio decreses, the copper content increases and the linear expansion coefficient increases slightly
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Received: 14 March 2022
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2022, Vol. 32 
