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Development of Titanium Alloys with Low Elastic Modulus and High Corrosion Resistance designed on the Basis of Quantum Chemistry Theory

Research Project

Project/Area Number 16591960
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 補綴理工系歯学
Research InstitutionNagasaki University

Principal Investigator

SHIRAISHI Takanobu  Nagasaki University, Graduate School of Biomedical Sciences, Associate Professor, 大学院医歯薬学総合研究科, 准教授 (10150468)

Co-Investigator(Kenkyū-buntansha) HISATSUNE Kunihiro  Nagasaki University, Graduate School of Biomedical Sciences, Professor, 大学院医歯薬学総合研究科, 教授 (20037526)
SHISHIDO Toetsu  Tohoku University, Institute for Materials Research, Associate Professor, 金属材料研究所, 准教授 (50125580)
FUJITA Takeshi  Nagasaki University, Graduate School of Biomedical Sciences, Assistant Professor, 大学院医歯薬学総合研究科, 助教 (90432971)
TAKUMA Yasuko  Nagasaki University, Graduate School of Biomedical Sciences, Research Fellow, 大学院医歯薬学総合研究科, 教務職員 (60160074)
MIURA Eri  Nagasaki University, Graduate School of Biomedical Sciences, Assistant Professor, 大学院医歯薬学総合研究科, 助教 (70315258)
田中 康弘  香川大学, 工学部, 助教授 (10217086)
小池 麻里  長崎大学, 大学院・医歯薬学総合研究科, 助手 (00234667)
Project Period (FY) 2004 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥3,600,000 (Direct Cost: ¥3,600,000)
Fiscal Year 2006: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2005: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 2004: ¥2,200,000 (Direct Cost: ¥2,200,000)
KeywordsTitanium alloy / Elastic modulus / Young's modulus / Poisson's ratio / Quantum chemistry / ジルコニウム / ビッカース硬さ / 耐食性 / 電気化学 / インプラント / 生体材料 / 弾性係数 / 超音波パルス法 / 量子化学理論
Research Abstract

To develop new Ti alloys with low elastic modulus and high corrosion resistance, Ti-Zr binary alloys with Zr content of 0, 20, 40, 60, 70, 80, 100 at.% were prepared and their density, Young's modulus, Poisson's ratio and Vickers microhardness were investigated. Primary experimental results were as follows.
1. Density
The density vs. composition curve for the Ti-Zr binary alloys slightly deviated positively from the straight baseline connecting the two points on both ends for pure Ti and pure Zr. It is noted that the degree of deviation from the straight baseline was slightly greater in the Ti-rich region compared to the Zr-rich region.
2. Hardness
Hardness of the as-cast pure Ti and Zr were 157 VHN and 196 VHN, respectively. The alloying addition of 20 at.% Zr to Ti drastically increased hardness, indicating that a great deal of solid solution hardening occurred. Further addition of Zr further increased Vickers hardness up to about 370 VHN at Ti-60 at.% Zr composition. Similar solid solution hardening was observed when Zr was alloyed with Ti. However, magnitude of increase in hardness was much weaker in the Zr-rich region compared to the Ti-rich region.
3. Young's modulus and Poisson's ratio
Young's modulus of pure Ti was significantly higher than that of pure Zr. By alloying Ti with Zr, Young's modulus markedly decreased and the minimum Young's modulus of about 89 GPa was obtained at the Ti-60 at.% Zr composition. On the other hand, Poisson's ratio of pure Ti was significantly lower than that of pure Zr. By alloying Ti with Zr, Poisson's ratio markedly increased and the maximum Poisson's ratio of about 0.343 was obtained at the Ti-60 at.% Zr composition.

Report

(4 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • Research Products

    (17 results)

All 2007 2006 2005 2004

All Journal Article (14 results) Book (3 results)

  • [Journal Article] Variations of color with alloying elements in Pd-free Au-Pt-based high noble dental alloys2007

    • Author(s)
      T.Shiraishi et al.
    • Journal Title

      Materials Science and Engineering B (in press)

    • NAID

      120006984272

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] チタン -陶材焼付合金界面反応への金コーティングの効果2006

    • Author(s)
      三浦永理ほか
    • Journal Title

      日本金属学会誌 70(1)

      Pages: 51-58

    • NAID

      10017152956

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Optical Properties of Au-Pt-Pd-based High Noble Dental Alloys2006

    • Author(s)
      T.Shiraishi et al.
    • Journal Title

      Gold Bulletin 39(1)

      Pages: 9-15

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2005 Annual Research Report
  • [Journal Article] Trends in Materials Science Research2006

    • Author(s)
      T.Shiraishi
    • Journal Title

      Nova Science Publishers

      Pages: 81-99

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Variations of Colour with Alloying Elements in Pd-free Au-Pt-based High Noble Dental Alloys2006

    • Author(s)
      Takanobu Shiraishi et al.
    • Journal Title

      Proceedings of the 4th International Conference on Gold Science, Technology and its Applications

      Pages: 125-125

    • Related Report
      2006 Annual Research Report
  • [Journal Article] チタン-陶材焼付合金界面反応への金コーティングの効果2006

    • Author(s)
      三浦永理 他
    • Journal Title

      日本金属学会誌 70(1)

      Pages: 51-58

    • NAID

      10017152956

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 試作歯科用 Ti-Zr-Sn 系合金の鋳造性と機械的性質2005

    • Author(s)
      緒方敏明ほか
    • Journal Title

      歯科材料・器械 24(4)

      Pages: 240-246

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Castability and Mechanical Properties of Experimental Ti-Zr-Sn Alloys for Dental Application2005

    • Author(s)
      T.Ogata et al.
    • Journal Title

      The Journal of the Japanese Society for Dental Materials and Devices 24(4)

      Pages: 240-246

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Effect of cold working on ordering of an equiatomic CuPt alloy2005

    • Author(s)
      K.Hisatsune et al.
    • Journal Title

      Journal of Alloys and Compounds 391(1-2)

      Pages: 38-41

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Microstructures and Coherent Phase Diagram for the Pseudobinary System (AuCu)_<1-x>Pd_x with x≦0.102005

    • Author(s)
      R.H.Luciano et al.
    • Journal Title

      Journal of Alloys and Compounds 392(1-2)

      Pages: 142-148

    • Related Report
      2005 Annual Research Report
  • [Journal Article] 試作歯科用Ti-Zr-Sn系合金の鋳造性と機械的性質2005

    • Author(s)
      緒方敏明 他
    • Journal Title

      歯科材料・器械 24(4)

      Pages: 240-246

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Effect of cold working on ordering of an equiatomic CuPt alloy2005

    • Author(s)
      K.Hisatsune et al.
    • Journal Title

      Journal of Alloys and Compounds 391

      Pages: 38-41

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Microstructures and coherent phase diagram for the pseudobinary system (AuCu)1-xPdx with x<=0.102005

    • Author(s)
      R.H.Luciano et al.
    • Journal Title

      Journal of Alloys and Compounds (In press)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Effect of Gold Coating on Interfacial Reaction between Dental Porcelain and Titanium2004

    • Author(s)
      E.Miura et al.
    • Journal Title

      Materials Transactions 45(10)

      Pages: 3044-3049

    • NAID

      10013717232

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary 2004 Annual Research Report
  • [Book] Optical Properties of Pd-free Au-Pt-based High Noble Alloys, A chapter in a book "Trends in Materials Science Research"2006

    • Author(s)
      Takanobu Shiraishi
    • Publisher
      Nova Science Publishers
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Annual Research Report 2006 Final Research Report Summary
  • [Book] Trends in Materials Science Research2005

    • Author(s)
      T.Shiraishi
    • Publisher
      Nova Science Publishers
    • Related Report
      2005 Annual Research Report
  • [Book] Trends in Materials Science Research2005

    • Author(s)
      T.Shiraishi
    • Publisher
      Nova Science Publishers(In press)
    • Related Report
      2004 Annual Research Report

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Published: 2004-04-01   Modified: 2016-04-21  

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