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Experimental Evaluation of Inter facial Segregation between Liquid Alloys and Molten Salt by using Electro-chemical Capillarity

Research Project

Project/Area Number 12650734
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Metal making engineering
Research InstitutionOsaka University

Principal Investigator

TANAKA Toshihiro  Osaka University, Graduate School of Engineering, Department of Material Science and Processing, Associate Professor, 大学院・工学研究科, 助教授 (10179773)

Co-Investigator(Kenkyū-buntansha) HARA Shigeta  Osaka University, Graduate School of Engineering, Department of Material Science and Processing, Professor, 大学院・工学研究科, 教授 (90029116)
Project Period (FY) 2000 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 2001: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 2000: ¥1,800,000 (Direct Cost: ¥1,800,000)
KeywordsSurface segregation / Ga-Bi alloys / KCl-LiCl molten salt mixture / Surface tension / Interfacial tension
Research Abstract

Although the interfacial segregation between liquid alloys and molten salt is recognized from a thermodynamic view point, the phenomenon can not be seen directly by using any experimental method. This segregation occurs within a few atomic layers. Since the electro-chemical capillarity is quite sensitive to the change of the physico-chemical properties in the above very small atomic region, the interfacial segregation might be detected by using the electro-chemical capillarity. In the present work, the experimental apparatus for the electro-chemical capillarity was made, and then the interfacial excess electric charge between liquid alloys and molten salt was measured to confirm the above interfacial segregation between these two liquid phases. First of all, the electro-chemical capillary curves were measured for molten LiCl-KCl systems and liquid Ga-Bi alloys, of which compositions of Bi were changed. Then, the relationship between the interfacial excess electric charge and the bulk composition of Bi in liquid Ga-Bi alloys was obtained, which corresponded to the relation between the surface segregation and the bulk composition of Bi in liquid Ga-Bi alloys. Thus, it was found from the above experiments that the interfacial segregation between liquid alloys and molten salt can be evaluated from the measurement of the electro-chemical capillarity.

Report

(3 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] T.Tanaka, S.Hara: "Measurement of Surface Tension of Liquid Go base Alloys by a Sessila Drop Method"Zeirschrift fur Metallkende. Vol.92 No.11. 1242-1246 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T. Tanaka et al.: "Measurement of Surface Tension of Liquid Ga-Bi Alloys by a Sessile Drop Method"Zeitschrift fuer Metallkunde. Vol.92, No.11. 1242-1246 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Tanaka, S.Hara: "Measurement of Surface Tension of Liquid Ga base Alloys by a Sessile Drop Method"Zeitschrift fuer Metalkunde. Vol.92, No.11. 1242-1246 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Tanaka S.Hara: "Surface Tension of liquid Ga-Bi alloys"Zeitschrift for Metallkurde. (発表予定).

    • Related Report
      2000 Annual Research Report

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Published: 2000-04-01   Modified: 2016-04-21  

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