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Development of WC-base hard ceramics possible to fabricate by pressureless sintering

Research Project

Project/Area Number 19560719
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionAkita University

Principal Investigator

TAIMATSU Hitoshi  Akita University, 工学資源学部, 教授 (60125721)

Project Period (FY) 2007 – 2008
Project Status Completed (Fiscal Year 2008)
Budget Amount *help
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2008: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords炭化タングステン / 炭化ケイ素 / 焼結 / 硬さ / 機械的性質 / 硬度
Research Abstract

WCに2.5 vol%以上SiCを添加することでWCの焼結性が改善された。WC-4.85 mol% SiCセラミックスは1900℃の無加圧焼結で十分緻密化するが, WC粒径が7μm以上となり, 硬さが低下した。VC 添加は粒成長の抑制には効果的であるが, 焼結を阻害し, 常圧焼結には適さなかった。Cr_3C_2の添加は粒成長を抑制するとともに, 少量添加で, 焼結性を向上させ, 緻密な焼結体の1800℃での作製を可能とした。

Report

(3 results)
  • 2008 Annual Research Report   Final Research Report ( PDF )
  • 2007 Annual Research Report
  • Research Products

    (12 results)

All 2008 2007

All Journal Article (3 results) (of which Peer Reviewed: 3 results) Presentation (9 results)

  • [Journal Article] Preparation of WC-SiC Whisker Ceramics Composites by Hot Pressing and Their Mechanical Propertie2008

    • Author(s)
      Shigeaki Sugiyama, Hitoshi Taimatsu
    • Journal Title

      Materials Transactions 49

      Pages: 1644-1649

    • Related Report
      2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Synthesis of W_2C by Reactive Hot Pressing and Its Mechanical Properties2008

    • Author(s)
      Hitoshi Taimatsu, Shigeaki Sugiyama and Yuichiro Kodaira
    • Journal Title

      Materials Transactions 49

      Pages: 1256-1261

    • NAID

      10021147273

    • Related Report
      2008 Annual Research Report 2008 Final Research Report
    • Peer Reviewed
  • [Journal Article] Preparation of WC-SiC Whisker Ceramics Composites by Hot Pressing and Their Mechanical Properties2008

    • Author(s)
      Shigeaki Sugiyam, Hitoshi Taimatsu
    • Journal Title

      Materials Transactions 49

      Pages: 1644-1649

    • Related Report
      2008 Annual Research Report
    • Peer Reviewed
  • [Presentation] WC-SiC 系硬質セラミックスの機械的性質に及ぼす炭化物の効果2008

    • Author(s)
      杉山重彰, 中居林義直, 仁野章弘, 泰松斉
    • Organizer
      SPS研究会
    • Place of Presentation
      長岡
    • Year and Date
      2008-11-27
    • Related Report
      2008 Final Research Report
  • [Presentation] WC-SiC系硬質セラミックスの機械的性質に及ぼす炭化物の効果2008

    • Author(s)
      杉山重彰, 中居林義直, 仁野章弘, 泰松斉
    • Organizer
      SPS研究会
    • Place of Presentation
      長岡
    • Year and Date
      2008-11-27
    • Related Report
      2008 Annual Research Report
  • [Presentation] WC-SiC系硬質セラミックスの機械的性質に及ぼすMo_2Cの効果2008

    • Author(s)
      杉山重彰, 中居林義直, 仁野章弘, 泰松斉
    • Organizer
      粉体粉末冶金協会
    • Place of Presentation
      福岡
    • Year and Date
      2008-11-06
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] WC-SiC系硬質セラミックスの微細組織2008

    • Author(s)
      仁野章弘, 中居林義直, 杉山重彰, 菅原和久, 泰松斉
    • Organizer
      日本金属学会
    • Place of Presentation
      熊本
    • Year and Date
      2008-09-27
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] バインダーレスWCの焼結性に及ぼすC添加の効果2008

    • Author(s)
      高橋賢介, 泰松斉, 杉山重彰, 仁野章弘
    • Organizer
      日本金属学会
    • Place of Presentation
      熊本
    • Year and Date
      2008-09-27
    • Related Report
      2008 Annual Research Report 2008 Final Research Report
  • [Presentation] WC-SiC-Mo_2C硬質セラミックスの機械的性質に及ぼすCr_3C_2, NbC, ZrCの効果2008

    • Author(s)
      高橋尚巳, 杉山重彰, 泰松斉
    • Organizer
      日本金属学会
    • Place of Presentation
      東京
    • Year and Date
      2008-03-27
    • Related Report
      2008 Final Research Report
  • [Presentation] WC-SiC-Mo_2C硬質セラミックスの機械的性質に及ぼすCr_3C_2, NbC, ZrCの効果2008

    • Author(s)
      高橋尚巳
    • Organizer
      日本金属学会
    • Place of Presentation
      武蔵工業大学
    • Year and Date
      2008-03-27
    • Related Report
      2007 Annual Research Report
  • [Presentation] WC-SiC硬質セラミックスの機械的性質に及ぼすMo_2CとCr_3C_2の効果2007

    • Author(s)
      中居林義直, 杉山重彰, 泰松斉
    • Organizer
      日本金属学会
    • Place of Presentation
      岐阜
    • Year and Date
      2007-09-19
    • Related Report
      2008 Final Research Report
  • [Presentation] WC-SiC硬質セラミックスの機械的性質に及ぼすMo_2CとCr_3C_2の効果2007

    • Author(s)
      中居林義直
    • Organizer
      日本金属学会
    • Place of Presentation
      岐阜大学
    • Year and Date
      2007-09-19
    • Related Report
      2007 Annual Research Report

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Published: 2007-04-01   Modified: 2016-04-21  

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