Title of article
Isothermal section at 950 °C of the Co–Nb–Ti system
Author/Authors
Xu، نويسنده , , HongHui and Du، نويسنده , , Yong and Tang، نويسنده , , Chengying and He، نويسنده , , Yuehui and Yuan، نويسنده , , Zhaohui and Huang، نويسنده , , Baiyun and Li، نويسنده , , Shitong، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2005
Pages
6
From page
336
To page
341
Abstract
The isothermal section at 950 °C of the Co–Nb–Ti system was investigated using diffusion couples and six ternary alloys. The specimens were examined by means of optical microscopy, scanning electron microscopy and electron probe microanalysis. No ternary compound was found. Nine three-phase equilibria were observed. The binary intermediate phases NbCo3 and Nb2Co7, the existence of which is still controversial in the literature, were observed at 950 °C. The solubilities of Ti in Nb2Co7, NbCo3, λ-NbCo2 and μ-Nb6Co7 were determined to be 1.9, 16.4, 14.4 and 17.4 at.%, respectively. The solubilities of Nb in TiCo3, TiCo2(h), TiCo2(c), TiCo and Ti2Co were determined to be about 5.7, 11.0, 2.6, 13.6 and 3.1 at.%, respectively.
Keywords
Co–Nb–Ti system , phase equilibrium , EPMA , Diffusion couple
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2005
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2149175
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