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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 4    August 2002

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Determination of isothermal section of
Ni-Pt-Ta ternary system at 1173K
WANG Ri-chu(王日初), LIU Chun-lei(柳春雷), JIN Zhan-peng(金展鹏)

Department of Materials Science and Engineering, Central South University,
Changsha 410083, China

Abstract:The isothermal section of the Ni-Pt-Ta ternary system at 1173K was determined by means of the diffusion triple technology and the electron microprobe analysis. The phase relations in this system were studied. Linear compound (Ni, Pt)3Ta with small solubility forming between Ni3Ta and Pt3Ta was identified. Four binary compounds, i.e. Pt2Ta, Ni2Ta, NiTa and NiTa2, and four three-phase fields, i.e. Pt2Ta +(Ta)+NiTa2, Pt2Ta+NiTa2+NiTa, Pt2Ta+(Ni, PT)3Ta+NiTa and (Ni, Pt)3 Ta+NiTa+Ni2Ta, were also identified.

 

Key words: Ni-Pt-Ta ternary system; diffusion layers; phase equilibria; isothermal section

ISSN 1672-7029
CN 43-1423/U

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