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Preparation of quasicrystalline particles with uniform size

Research Project

Project/Area Number 04650026
Research Category

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

Allocation TypeSingle-year Grants
Research Field Applied materials
Research InstitutionDaido Institute of Technology

Principal Investigator

MIHAMA Kazuhiro  Daido Institute of Technology, Professor, 工学部, 教授 (50023007)

Co-Investigator(Kenkyū-buntansha) HAYAKAWA Kenji  Daido Institute of Technology, Lecturer, 工学部, 講師 (50075909)
IWAMA Saburou  Daido Institute of Technology, Professor, 工学部, 教授 (00075904)
Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1993: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1992: ¥1,400,000 (Direct Cost: ¥1,400,000)
KeywordsQuasicrystals / Mesoscopic particles / Crystal growth / Gas evaportation / Electron microscopy / メゾンコピット粒子
Research Abstract

The purpose of the present project is that an establishmant of the preparation method of quasicrystalline particles with uniform size is tried. The establishment may bring about a possibility of application of quasicrystalline particles as coating materials or polisheng powder for ultra-finishing.
A working chamber of stainless steel constructed is 25cm in diameter, 45cm in hight and evacuated down to 5x10^<-4> Pa by using a turbo-molecular pump.
For control of the particle size, a downward evaporation of Al-Mn alloy has tried so as to form only outer zone among the three growth zones in ordinary gas evaporation technique. However, the trial has failed due to a reaction of the alloy with the source materials such as W, Ta.
Next, the condition of which the all particles prepared in the work chamber are quasicrystalline phase without the equilibrium alloy phase has been searched by the function of capture duration of particles, evaporation temperature and gas pressure. Howerer, it was really difficult to find the condition and is required further investigation on the preparation technique.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] K.Mihama: "Growth of crystalline compositefilms of Au-MoS_2 and CaF_2-MaO" Z.Phys.26. 243-245 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 美浜,和弘: "金属のMgO単結晶複合膜の電子顕微鏡による詳細とその特性" 日本電子顕微鏡学会誌. 27. 8-13 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] K.MiHAMA: "Growth of CaF^2 crystallites in single cmyltelluic MgC bilms" Electrom Microscopy(World Science). 1. 410-412 (1992)

    • Related Report
      1992 Annual Research Report
  • [Publications] T.Iwami: "Vaponisaton and condensahon of melals in a plasing gas with high velacly." Nanosiructured HATERiALS. 1. 113-118 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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