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Development of Machinable Glass Ceramics Containing Rare Earth Oxides

Research Project

Project/Area Number 05555182
Research Category

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

Allocation TypeSingle-year Grants
Research Field Structural/Functional materials
Research InstitutionThe University of Tokyo

Principal Investigator

MAKISHIMA Akio  University of TOKYO,Materials Science Professor, 大学院工学部研究科, 教授 (00016578)

Co-Investigator(Kenkyū-buntansha) INOUE Hiroyuki  University of TOKYO,Materials Science Assistant Professor, 大学院工学部研究科, 講師 (10193608)
宇尾 基弘  東京大学, 工学部, 助手 (20242042)
Project Period (FY) 1993 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥9,600,000 (Direct Cost: ¥9,600,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 1994: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 1993: ¥6,700,000 (Direct Cost: ¥6,700,000)
KeywordsGLASS CERAMICS / MACHINABILTY / MACHINABLE / RARE EARTH OXIDE / Y203 / OXYAPPATITE / ALUMINOSILICATE GLASSS / LATHE / 旋盤 / 機械加工性 / 快切削性 / 希土類アルミノシリケート / 表面粗さ / マシナブルセラミックス / イットリア / マシナブルガラス / 希土類 / 結晶成長
Research Abstract

Machinable glass Ceramics, which can be cut, ground drilled and milled by equipment used for machining and fast -machining of metals, are being used as heat-resistant materials, electrical insulation, chemically durable materials etc. Usually, machinable glass-ceramics contain mica, which has high cleavability, obtained by precipitating mica in glass, by sintering etc. Unfortunately, this intrinsic property of mica also imparts reduced hardness and elastic modulus compared to ordinary glasses. Rare-metal oxide containing aluminosilicate glass ceramics were found to be good machinability by the authors. It is purposes of the present study to improve the machinabilty of the glass Ceramics of higher hardness and elastic modulus and higher electrical insulation because of nonalkaline composition. Several series of Y203-containing aluminosilicate glasses were prepapared by an ordinary melting method, and their physical properties, such as Vickers hardness, surface roughness and so forth. Crystalization behaviors were at the same time studied for the samples substituted for alakaline earth oxide or kinds of rearth earth oxides in theses glasses. Sol-gel process were adopted to make the machinable glass cermics of these kinds. Crystallized samples were successfullly lathed and their surface roughness was examined. Higher amounts of alkaline earth oxide introduction leads to some correlatation to the surface roughness and harness and/or volume fraction of cryatallization.

Report

(4 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • 1993 Annual Research Report
  • Research Products

    (15 results)

All Other

All Publications (15 results)

  • [Publications] K.Morita, A.Makishima 他: "Surface Roughness of Y_2O_3 containing Alumino-Silicate Aloss-ceramiec as an Indicative of Their Machinability" J.American Ceramic society. 76・7. 1861-1864 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] M.fukuoka, A.Makishima 他: "Effect of Precuriers or the Structure of SiO_2-Al_2O_3Sols and Gels by the Sol-Gel Process" J.Sol-Gel Science and Technology. 1・1. 85-92 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 牧島 亮男: "ガラスの科学と機械的性質" 第38回材料強度と破壊総合シンポジウム論文集. 38. 44-49 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 牧島 亮男: "機械加工性ガラスセラミックス" 金属. 65・2. 1200-1201 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 牧島 亮男: "セラミックス材料の表面加工・改質技術" 機械技術. 42・11. 54-55 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 牧島 亮男: "マシニブル結晶化ガラス" 日本技硝子社,商品カタログ. 1-2 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] "Kazuki Morita, Akira Umezawa, Shinji, Yamato and Akio Makishima: "Surface Roughness of Y203 Containing Alumino-Silicate Glass-Ceramics as an Indicative of Their Machinability"" J.American Ceramic Society. 76 (7). 1861-1864 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Morinao Fukuoka, Yoshito Onoda, satoru Inoue、Kenji Wada、Akihiko Nukui and Akio Makishima: ""Effects of Precursers on the Structure of SiO2-Al203 Sols and Gels by the Sol-Gel Process"" J.Sol Gel Science and Technology. 1 (1). 85-92 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Akio Makishima: ""Glass Science and Mechanical Properties"" Collected Papers of the 38th Symposium of Strength and Fracture of Materials. Vol.38. 44-49 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Akio Makishima: ""Surface Machining and Modification of Ceramic Materials"" Machine and Technology. 42 (11). 54-55 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Akio Makishima: ""Machinable Glass Ceramics"" Matals and Technology (kinzoku). 65 (12). 1200-1201 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] Akio Makishima: "Machinable Glass Ceramics" Nippon Sheet Glass Co.Ltd.Catalog. (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] 牧島亮男: "機械加工可能な結晶化ガラス" 金属. 65. 1200-1201 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 牧島亮男: "セラミックス系材料の表面加工・改質技術" 機械技術. 42(11). 54-55 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] Akio Makishima 他: "Surface Roughness of Yttria-Containing Aluminosilicate Glass-Ceramics as Indicative of Their Machinability" Journal of American Ceramic Society. 76. 1861-1864 (1993)

    • Related Report
      1993 Annual Research Report

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Published: 1993-04-01   Modified: 2016-04-21  

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