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1989 Fiscal Year Final Research Report Summary

Thermodynamic Study of Electronic Materials

Research Project

Project/Area Number 62470056
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 金属精錬・金属化学
Research InstitutionOsaka University

Principal Investigator

KOZUKA Zensaku  Osaka Univ.Fac.of Eng. Professor, 工学部, 教授 (80028935)

Co-Investigator(Kenkyū-buntansha) YAO Shinya  Osaka Univ.Fac.of Eng. Asst. Prof., 工学部, 助教授 (90029299)
KATAYAMA Iwao  Osaka Univ.Fac.of Eng. Asst. Prof., 工学部, 助教授 (10029192)
Project Period (FY) 1987 – 1989
KeywordsOxygen in Metals / Thermodynamics of Alloys / Stabilized Zirconia / Beta-Alumina / EMF measurements / Coulomatic Titration Method
Research Abstract

1) Analysis of oxygen in high purity metals: By using new type oxygen analytical method employing oxygen sensor and pump, the oxygen contents in high purity Ge,Bi and Sb have been determined. The analytical values were highly consistent and reliable despite the fairly low oxygen concentration in the sample.
2) Thermodynamical properties of oxygen in liquid binaly alloys: Activity coefficients of oxygen in Ni-S and Co-S melts were determined by using a modified coulometic titration technique. The activity coefficients of oxygen in both melts are rapidly increased with increasing the sulfir compositions.
3) Thermodynamic study of liquid binary and temary alloys including In or Ga: By the EMF method using stabilized zirconia solid electrolyte, indium or gallium activities in Ga-Sb-In,Ga-Sb-Bi,In-Bi-TI and In-Pb-Sb temary alloys were determined. The other thennodynamic properties were calculated based on Gibbs-Duhern equation and modified calculation method for temary alloys from the data of each constituent binary alloys.
4) Thermodynamic study of compound semiconducten materials: The activities of gallium in the whole composition range of GaAs-InAs solid solutions coexisting with arsenic poor temary liquid phases. Composition dependence of the activity can be explained qualitatively in terms of the phase relation based on the model calculation.
5) Ion exchange reaction of beta-alumina and Ag or Go activity measurement in liquid Ag or Ga binary alloys: Ag^+ or Ga^+-beta-alumina solid electrolyte was prepared-by ton-exchange reaction of Na-beta-alumina in AgNO_3 or Ga- GaCl_2 melts. The EMF of following cell was measured and the activities of Ga in liquid Ga-Sb alloys were determined. The same experiments for Ag-Pb alloy by using Ag^+-beta-alumina solid electrolyte was tried, however the reliable data could not obtained because solid electrolyte was broken during EMF measurements.

  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] S.Yao,A.Akata,M.Tagucki and Z.Kozuka: "The Activity Coefficients of Oxgen in Ni-S and Co-S Melts" Met.Trans of AIME(投稿中).

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I.Katayama,T.Nakai,T.Inomoto and Z.Kozuka: "Activity Measurements of Ga in GaAs-InAs Solid Solutions by the EMF Method" Mat.Trans.JIM. 30. 354-359 (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 鄭敏輝,幸塚善作: "In-Bi-Tl、In-Pb-Sb系3元合金の熱力学的研究" 日本鉱業会昭和63年春季大会講演要旨集. 457 (1988)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 片山巌,中井哲也,井本健夫,幸塚善作: "起電力法によるGaAs-InAs固溶体中のGaの活量測定" 第2回素材開発研究交流会資料. (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] 幸塚善作,片山巌,佐渡達也,砂口洋毅: "ベ-タアルミナのイオン交換とその応用" 第2回素材開発研究交流会資料. (1989)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] I.Katayama, I.Nakai, T.Inomoto, Z.Kozuka: "Activity Measurements of Ga in GaAs-InAs Solid Solutions by the EMF Method" Mat.Trans JIM. vol.30 pp.354-359 (1989).

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] S.Yao, A.Akata, M.Taguchi, Z.Kozuka: "The Activity Coefficients of Oxygen in Ni-S and Co-S Melts" Met.Trans. of AIME.

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 1993-03-26  

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