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1998 Fiscal Year Final Research Report Summary

Superplasticity in Ceramics

Research Project

Project/Area Number 08242103
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionThe University of Tokyo

Principal Investigator

SAKUMA Taketo  Graduate School of Frontier Sci., The University of Tokyo, Prof., 大学院・新領域創成科学研究科, 教授 (50005500)

Co-Investigator(Kenkyū-buntansha) URAO Ryoichi  Ibaraki Univ., Faculty of Engineering, Prof., 工学部, 教授 (10007776)
MOTOHASHI Yoshinobu  Ibaraki Univ., Fac. of Eng., Prof., 工学部, 教授 (00007783)
FURUSHIRO Norio  Osaka Univ., Intl. Student Center., Prof., 留学生センター, 教授 (50029188)
Project Period (FY) 1996 – 1998
Keywordssuperplasticity / grain boundary / grain boundary plasticity / ceramics
Research Abstract

The project "Superplasticity in Ceramics" aims to examine superplastic phenomena in fine-ceramic material. This project also aims to reveal a mechanism of superplastic deformation in ceramics, and to develop a new industrial technology for superplastic forming of ceramics. During the research term from 1996 to 1998, we succeed in revealing role of grain boundary for the superplasticity in ceramics, establishing the mechanisms of superplastic deformation and in terms of "grain boundary plasticity", which is a new concept for superplastic phenomena. We organize or make a key role in several conference and meetings, such as (1) International Conference PRICM-3 special session "Superplasticity and Superplastic forming", (2) International Conference on "Towards Innovation in Superplasticity I and II" or (3) Open meeting "Towards Innovation in Superplasticity". One of our key topics of out results is to examine the superplastic phenomena from the viewpoint of microstructure in grain boundary. This type of approach is no doubt one of the most effective ways to break through the present situation in superplastic research in advanced materials.

  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] T.Koudo,Y.Takigawa,Y.Ikuhara,T.Sakuma: "Critical assessments of tensile ductility in superplastic TZP and TiO_2-diped TZP"Mater. Trans. JIM. 39. 1108-1114 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] A.H.Chokshi,Y.Ikuhara,J.A.Hines,T.Sakuma: "The influence of trace impurities on the mechanical characteristics of a superplastic 2mol% yttria stabilized zirconia"Acta Mater. 46. 5557-5568 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] P.Thavorniti,Y.Ikuhara,T.Sakuma: "Microstructaral characterization of Superplastic SiO_2-doped TZP with a small amount of oxicle addition"J.Am. Ceram. Soc. 81. 2927-2932 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] J.Zhao,Y.Ikuhara,T.Sakuma: "Grain growth of SiO_2-added zirconia annealed in the cubic/tetragonal two-phase region"J.Am. Ceram. Soc. 81. 2087-2092 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Takigawa,Y.Yoshizawa,T.Sakuma: "Superplasticity in Al_2O_3-20 vol % Spinel (MgO・1.5Al_2O_3) ceramics"Ceram. Inf. 24. 61-66 (1998)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] Y.Ikuhara,I.Tanaka,P.Thavorniti,T.Sakuma: "Grain boundary structure and chemical bonding state of Superplastic SiO_2-dcped TZP"J.Electron Microscopy. 46. 467-472 (1997)

    • Description
      「研究成果報告書概要(和文)」より
  • [Publications] H. Yoshida and T. Sakuma: "Transient creep associated with grain boudary sliding fine-grained single-phase materials"J. Mater. Sci.. 33. 4897-4885 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Rouxel, B. Baron, P. Verdier and T. Sakuma: "SiC particle reinforced oxynitride glass : stress relaxation, creep and strain-rate imposed experiments"Acta Mater.. 46. 6115-6130 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Kondo, Y. Takigawa, Y. Ikuhara and T. Sakuma: "Critical assessments of tensile ductility in superplastic TZP and TiOィイD22ィエD2-doped TZP"Mater. Trans. JIM. 39. 1108-1114 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] A. H. Chokshi, Y. Ikuhara, J. A. Hines and T. Sakuma: "The influence of trace impurities on the mechanical characteristics of a superplastic 2mol% yttria stabilized zirconia"Acta Mater.. 46. 5557-5568 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] P. Thavorniti, Y. Ikuhara and T. Sakuma: "Microstructural Characterization of superplastic SiOィイD22ィエD2-doped TZP with a small amount of oxide addition"J. Am. Ceram. Soc.. 81. 2927-2932 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] H. Yoshida, Y. Ikuhara and T. Sakuma: "High-temperature creep resistance in rare earth-doped fine-grained AlィイD22ィエD2OィイD23ィエD2"J. Mater. Res.. 13. 2597-2601 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] J. Zhao, Y. Ikuhara and T. Sakuma: "Grain growth of SiOィイD22ィエD2-added zirconia annealed in the cubic/tetragonal two-phase region"J. Am. Ceram. Soc.. 81. 2087-2092 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Takigawa, Y. Toshizawa and T. Sakuma: "Superplasticity in AlィイD22ィエD2OィイD23ィエD2-20vol%Spinel (MgO・1.5AlィイD22ィエD2OィイD23ィエD2)ceramics"Ceram. Int.. 24. 61-66 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Sakuma: "A brief review on the project "Towards Innovation in superplasticity""Mater. Sci. Forum. 304-306. 3-10 (1993)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] T. Sakuma: "Grain boundaries in superplastic ceramics"Mater. Sci. Forum. 294-296. 59-66 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Publications] Y. Ikuhara, I. Tanaka, P. Thavorniti and T. Sakuma: "Grain boundary structure and chemical bonding state of SiOィイD22ィエD2-doped superplastic TZP with a small amount of metal oxide addition"The Third Pacific Rim International Conference on Advanced Materials and Processing. ed. By M. A. Imam, R. DeNale, S. Hanada, Z. Zhong and D. N. Lee, TMS.. 1747-1754

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

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Published: 2001-10-23  

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