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Dissolution equilibrium of Bi vapor and activities of Bi in liquid Ni-Cr-Fe-Nb solutions
Li Xiaoliang1,2; Yang Yaqian2; Chen Bo2; Xing Weiwei2; Li Xu2; Liu Kui2
Corresponding AuthorChen Bo(bchen@imr.ac.cn)
2018-10-01
Source PublicationVACUUM
ISSN0042-207X
Volume156Pages:271-276
AbstractThe vapor pressure and the activity coefficients of minor elements at infinite dilution in liquid Ni-Cr-Fe-Nb alloys are a necessary and important basic property that is required to analyze the behavior of trace elements during metallurgical production process. The carrier gas method has been applied in this study of the dissolution equilibrium of Bi vapor pressures over liquid Ni-Cr-Fe-Nb alloys from 1723 K to 1823K and then the activities as well as the activity coefficients of Bi in liquid Ni-Cr-Fe-Nb alloys were calculated from the results. It is found that Bi shows strong negative deviation from Henrys Law, and the relationship between the standard free energy of dissolution reaction Bi(g) = [Bi](Ni-Cr-Pe-Nb) and temperature is Delta G(0) = A + BT, where A is - 163058 J/mol and B is 52.6 J/(mol.K). At 1773 K and 1873K, the activity coefficients gamma of bismuth at infinite dilution is 0.442 and 0.253, respectively. Under the condition of conventional vacuum melting, the volatile lower limit of Bi can be up to 0.22 ppm, which was calculated by using thermodynamic data mentioned above.
KeywordNi-Cr-Fe-Nb alloys Partial vapor pressure of Bi Activities Activity coeffcients Standard free energy of reaction Delta G(0)
DOI10.1016/j.vacuum.2018.07.047
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Physics
WOS SubjectMaterials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000445980600036
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/129572
Collection中国科学院金属研究所
Corresponding AuthorChen Bo
Affiliation1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China
Recommended Citation
GB/T 7714
Li Xiaoliang,Yang Yaqian,Chen Bo,et al. Dissolution equilibrium of Bi vapor and activities of Bi in liquid Ni-Cr-Fe-Nb solutions[J]. VACUUM,2018,156:271-276.
APA Li Xiaoliang,Yang Yaqian,Chen Bo,Xing Weiwei,Li Xu,&Liu Kui.(2018).Dissolution equilibrium of Bi vapor and activities of Bi in liquid Ni-Cr-Fe-Nb solutions.VACUUM,156,271-276.
MLA Li Xiaoliang,et al."Dissolution equilibrium of Bi vapor and activities of Bi in liquid Ni-Cr-Fe-Nb solutions".VACUUM 156(2018):271-276.
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