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AN INVESTIGATION ON BONDING OF NONSINTERABLE POWDER BY PULSE CVI PROCESS

Research Project

Project/Area Number 62470061
Research Category

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

Allocation TypeSingle-year Grants
Research Field 無機工業化学
Research InstitutionNAGOYA UNIVERSITY

Principal Investigator

SUGIYAMA Kohzo  NAGOYA UNIVERSITY, DEPT.ENG., PROFESSOR, 工学部, 教授 (50023023)

Co-Investigator(Kenkyū-buntansha) KUWABARA Katsumi  NAGOYA UNIVERSITY, DEPT.ENG., RES.ASSOC., 工学部, 助手 (40023262)
SUZUKI Yutaka  NAGOYA UNIVERSITY, DEPT.ENG., RES.ASSOC., 工学部, 助手 (60023214)
Project Period (FY) 1987 – 1989
Project Status Completed (Fiscal Year 1989)
Budget Amount *help
¥5,600,000 (Direct Cost: ¥5,600,000)
Fiscal Year 1989: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1988: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1987: ¥4,600,000 (Direct Cost: ¥4,600,000)
Keywordspulse CVI / CVI / SiC composites / particulate composites / 粉体のCVI / 複合材料 / TiNのCVI / SiCのCVI / 高温複合材料 / BNのCVI / 粉体のボンディング
Research Abstract

l.Pulse CVI of boron nitride into the Si_3N_4 powder preforms From a gas mixture of B_2H_6,NH_3,Ar and N_2, chemical vapor infiltration (CVI) of BN into Si_3N_4 powder preforms was investigated in use of hot-wall heating system and pressure pulse. At above 1100゚C, reaction has completed below 1 sec, thus, the reaction temperature must be kept below 1OOO゚C. The relationship between the number of pulse and the deposition into deep level showed the favorable hold-time of 1 sec at 1000゚C, because surface deposition becomes dominant at longer hold-time such as 5 sec. Flexural strength increased linearly after 3000 pulses and at 1000゚C.
2.SiC-infiltration into SiC particulate- and carbon fiber-preforms and po- rous carbon With an rf-heating system, SiC was infiltrated from a gas mixture of CH_3SiCl_3 and H_2 into an SiC particulate preforms. For 4mum powder, surface deposition began above 30000 pulses at 1OOO゚C, and the flexural strength at this point attained to 200-230 MPa. On the contrary, … More for 50mum powder, packing continued linearly even after 40000 pulse, however, the flexural strength at this point was only 120 MPa. In the case of porous carbon, the packing ratio after 10000 pulse and at 1000゚C was about 60% and here the flexural strength was 120 MPa which corresponded to three times that of the original one. Peculiar packing proceeding, from the deepest position to the surface, has been observed here. In the case of carbon fiber preforms, fibers were heated inductively, therefore, SiC fm the respective fibers which resulted in the poor flexural strength.
3.TiN infiltration into SiC or TiC particulate preforms From the gas mixture of TiCl_4-N_2-H_2, TiN was infiltrated into SiC or TiC particulate preforms. The favourable temperature was found to be 830-870゚C, but to find a specified condition was severe problem, because the temperature dependence of the reaction rate was markedly steep.
4.Modeling of pulse CVI Pulse CVI process was analyzed using diffusion- related equations which were compared with the experimental results of pulse CVI of TiN into silica-glass capillary the inner diameter of which was 1-100mum. Less

Report

(4 results)
  • 1989 Annual Research Report   Final Research Report Summary
  • 1988 Annual Research Report
  • 1987 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] 杉山幸三: "CVIとパルスCVI" 日本金属学会報. 26. 1036-1043 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 杉山幸三: "CVI法によるコンポジットの作製" 機能材料. 9. 26-34 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Consolidation of Si_3N_4 powder-preform by infiltration of BN using the pulse CVI process" Journal of Materials Science Letters. 7. 1221-1224 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Reinforcement and antioxodizing of porous carbon by pulse CVI of SiC" Journal of Materials Science. 24. 3756-3762 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Pulse CVI of SiC to porous carbon or SiC particulate preform using RF-heating system" Journal of Materials Science. 25,No.4. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] 杉山幸三: "気相からマトリックスを埋める複合材料製造法" ニュ-セラミックス. 3,No.3. (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "CVI and Pulse CVI" Nippon Kinzoku Gakukai Hou, 26, 1036-1043, 1987.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Preparation of Composites by CVI Process" Kinouzairyo, 9, 26-34, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Consolidation of Si_3N_4 Powder Preform by Infiltration of BN using the Pulse CVI process" Journal of Materials Science Letters, 7, 1221-1224, 1988.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Reinforcement and Antioxidizing of Porous Carbon by Pulse CVI of SiC" Journal of Materials Science, 24, 3756-3762, 1989.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Pulse CVI of SiC to Porous Carbon or SiC Particulate Preform using RF-Heating System" Journal of Materials Science, 25, No.4, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Preparation of Composites Infiltrating the Matrix from Vapor" New Ceramix, 3, No.3, 1990.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1989 Final Research Report Summary
  • [Publications] Kohzo Sugiyama: "Reinforcement and antioxodizing of porous carbon by pulse CVI of SiC" Journal of Materials Science. 24. 3756-3762 (1989)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kohzo Sugiyama: "Pulse CVI of SiC to porous carbon or SiC particulate preform using RF-heating system" Journal of Materials Science. 25. No.4 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] 杉山幸三: "気相からマトリックスを埋める複合材料製造法" ニュ-セラミックス. 3. No.3 (1990)

    • Related Report
      1989 Annual Research Report
  • [Publications] Kohozo Sugiyama: Journal of Materials Science Letter. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] Kohozo Sugiyama: Journal of Materials Science. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 杉山幸三: 機能材料. 9. 26-34 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] 杉山幸三: 電気製鋼. 59. 271-281 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 杉山幸三: Journal of Materials Science Letters. 6. 331-333 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 杉山幸三: Proceedings of 10th International Conference on Chemical Vapor Deposition. (10). 1041-1049 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] 杉山幸三: 日本金属学会会報. 26. 1036-1043 (1987)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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