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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 16    No. 6    December 2006

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Measurement and analyses of molten Ni-Co alloy density
XIAO Feng(肖 锋)1, K. MUKAI2, FANG Liang(方 亮)3
FU Ya(傅 亚)1, YANG Ren-hui(杨仁辉)1

1. College of Materials Science and Engineering, Chongqing Institute of Technology, Chongqing 400050, China; 
2. Satellite Venture Business Laboratory, Kyushu Institute of Technology, 
Kitakyushu 804-8550, Japan; 
3. Department of Applied Physics, Chongqing University, Chongqing 400044, China

Abstract: With the advent of powerful mathematical modeling techniques for material phenomena, there is renewed interest in reliable data for the density of the Ni-based superalloys. Up to now, there has been few report on the density of molten Ni-Co alloy. In order to obtain more accurate density data for molten Ni-Co alloy, the density of molten Ni-Co alloy was measured with a modified sessile drop method, and the accommodation of different atoms in molten Ni-Co alloy was analyzed. The density of alloy is found to decrease with increasing temperature and Co concentration in the alloy. The molar volume of molten Ni-Co alloy increases with increasing Co concentration. The molar volume of Ni-Co alloy determined shows a positive deviation from the linear molar volume, and the deviation of molar volume from ideal mixing increases with increasing Co concentration over the experimental concentration range.

 

Key words: Ni-Co alloy; density; molar volume; modified sessile drop method

ISSN 1672-7029
CN 43-1423/U

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