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Study on the synthesis of Spray Coating Composed of Refractory Boride Ceramics by Electrothermal Explosion of powders

Research Project

Project/Area Number 07805066
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionTokyo Institute of Technology

Principal Investigator

TAMURA Hideki  Tokyo Institute of Technology, Materials and Structures Laboratory, Associate Professor, 応用セラミックス研究所, 助教授 (30188437)

Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1996: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1995: ¥1,000,000 (Direct Cost: ¥1,000,000)
KeywordsSpray / Refractory ceramics / Electrical explosion / Electrothermal explosion / Jet / 放射爆発 / ホウ化ジルコニウム / セラミックス / 複合化
Research Abstract

The subject of this research is to find the spraying process to produce the coating composed of refractory carbide ceramics due to electrothermal explosion of the ceramic powders. In addition, it is also expected to research a new technique suitable for the enlargement of this process.
The electrothermal explosion of conductive powders has been applied to produce spray coatings of refractory boride ceramics without any additives. The powder of conductive zirconium boride was pluged in a container made of an inner insulating tube and an outer metal cylinder having a window for ejection of molten paticles. Such a container was holded between a pair of electric contacts in a vacuum chamber. The spray of the ceramics was done by the explosion caused by electrical rapid heating due to high voltage application and large current discharge. In order to obtaine dense and adhessive coatings of novel functional boride ceramics, the explosion and spray of ceramic powders was observed by Sclieren photography which was composed of a high speed camera and high power argon ion laser. It was found that high power electrical discharge caused the production of a high speed jet containing molten particles. The representaive velocity of the jet was estimated 3000m/s of more on the basis of one dimensional approximation of intense shock wave formation. The electric energy supplied to the powder was twice to three times the one needed to melt just the powder. Thus it was revealed that this spray technique is chracterized with high temperature and speed jet which have not been obtained in other techniques yet. The coatings obtained was also as unique so that it had no pore and lamella, and that it mixed with the top layr of a substrate over the range of 50mum. Thus the coatings are expected to be highly dense and adhesive. For the large-scaled spraying, the shapes of the powder container and other equipment were evaluated.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (32 results)

All Other

All Publications (32 results)

  • [Publications] 河野上正晴、他3名: "電熱爆発溶射法による高融点ホウ化物セラミック皮膜の形成" 高圧力の科学と技術第4巻(1995年)特別号(第36回高圧討論会講演要旨集). 4. 95 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 田村英樹、他3名: "導電性粉体の電熱爆発による難焼結性ホウ化物セラミック溶射皮膜の形成" 第34回セラミックス基礎科学討論会講演要旨集. 92-93 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 田村英樹: "導電性粉体用電熱爆発溶射法の開発:高融点セラミックスの溶射例" 電気学会一般産業研究会資料. GID96. 27-35 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 田村英樹、他3名: "導電性粉体の電熱爆発溶射I:導電性セラミック粉体の電熱爆発" 第4回溶射総合討論会講演概要. 3-4 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 河野上正晴、他3名: "導電性粉体の電熱爆発溶射II:電熱爆発溶射法による高融点セラミック皮膜の形成" 第4回溶射総合討論会講演概要. 5-6 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 河野上正晴、他4名: "粉体の電熱爆発溶射III:高速度溶射のその場観察" 第5回溶射総合討論会講演概要. 1-2 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 池田吉謙、他4名: "粉体の電熱爆発溶射IV:炭化物等の耐熱セラミックコーティング" 第5回溶射総合討論会講演概要. 3-4 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideki Tamura,他2名: "Zirconium Boride and Tantalum Carbide Coatings Sprayed by Electrothermal Explosion of Powders" Journal of Thermal Spray Technology. 第6巻. (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 池田吉謙、他4名: "粉体の電熱爆発による高温・高速ジェットの発生" 平成8年度衝撃波シンポジウム講演論文集. 113-116 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 雙田飛鳥、他4名: "高温・高速ジェットによる高融点炭化物セラミックスコーティング" 平成8年度衝撃波シンポジウム講演論文集. 109-112 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 河野上正晴、他4名: "耐熱性セラミック粉体の電熱爆発溶射" 高圧力の科学と技術第5巻(1996年)特別号(第37回高圧討論会講演要旨集). 5. 212 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 河野上正晴、他4名: "電熱爆発による高速度溶射の観察" 高圧力の科学と技術第5巻(1996年)特別号(第37回高圧討論会講演要旨集). 5. 213 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masaharu Konoue, et al.: "High-melting-point boride ceramic coatings by electrothermal explosion spraying" Special Issue of The Review of High Pressure Science and Technology. Vol.4. 95 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideki Tamura, et al.: "Coating of Refractory Boride Ceramics by Electrothermal Explosion Spraying of Conductive Ceramic Powder" Proc.Ceramic Basic Science Meeting. 92-93 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideki Tamura: "Development of Electrothermal Explosion Spray Technique of Conductive Powdeers : Sprayings of Refractory Ceramics" Proc.General Inductry Division.Inst.Electrical Engineers of Japan. GID-96. 27-35 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideki Tamura, et al.: "Electrothermal Explosion Spraying of Conductive Powder (Part I) : Electrothermal Explosion of Conductive ceramic Powder" Proc.4th Domestic Conference of Thermal Spray Technology. 3-4 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masaharu Konoue, et al.: "Electrothermal Explosion Spraying of Conductive Powder (Part II) : High-melting-point ceramic coating by electrothermal explosion spraying" Proc.4th Domestic Conference of Thermal Spray Technology. 5-6 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masaharu Konoue, et al.: "Electrothermal Explosion Spraying of Conductive Powder (Part III) : In situ Observation of High Speed Spray by Elecrothermal Explosion of Powder" Proc.5th Domestic Conference of Thermal Spray Technology. 1-2 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshinori Ikeda, et al.: "Electrothermal Explosion Spraying of Conductive Powder (Part IV) : Coatings of Refractory Carbides and Others by Electrothermal Explosion of Powder" Proc.5th Domestic Conference of Thermal Spray Technology. 3-4 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hideki Tamura, et al.: "Zirconium Boride and Tantalum Carbide Coatings Sprayd by Electrothermal Explosion of Powders" J.Thermal Spray Technology. Vol.6 (in press). (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Takanori Soda, et al: "Refractory carbide ceramic coatings by high power jet" Proc.Symp.SHOCK WAVES,JAPAN '96. 113-116 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Yoshinori Ikeda, et al.: "High power jet produced by electrothermal explosion of powder" Proc.Symp.SHOCK WAVES,JAPAN '96. 109-112 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masaharu Konoue, et al.: "Electrothermal Explosion Spraying of Refractory Ceramic Powder" Special Issue of the Review of High Pressure Science and Technology. Vol.5. 212 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Masaharu Konoue, et al.: "Observation of High Speed Spray by Electrothermal Explosion of Conductive Powder" Special Issue of The Review of High Pressure Science and Technology. Vol.5. 213 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 河野上正晴、他4名: "粉体の電熱爆発溶射III:高速度溶射のその場観察" 第5回溶射総合討論会講演概要. 1-2 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 池田吉謙、他4名: "粉体の電熱爆発溶射IV:炭化物等の耐熱セラミックコーテイング" 第5回溶射総合討論会講演概要. 3-4 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hideki Tamura: "Zirconium Boride and Tantalum Carbide Coatings Sprayed by Electrothermal Explosion of Powders" Journal of Thermal Spray Technology. 第6巻. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 池田吉謙、他4名: "粉体の電熱爆発による高温・高速ジェットの発生" 平成8年度衝撃波シンポジウム講演論文集. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 雙田飛鳥、他4名: "高温・高速ジェットによる高融点炭化物セラミックスコーテイング" 平成8年度衝撃波ジンポジウム講演論文集. (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 河野上正晴、田村英樹、他2名: "電熱爆発溶射法による高融点ホウ化物セラミック皮膜の形成" 高圧力の科学と技術第4巻(1995年)特別号、第36回高圧討論会講演要旨集. 4. 95-95 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田村英樹、他3名: "導電性粉体の電熱爆発による難焼結性ホウ化物セラミック溶射皮膜の形成" 第34回セラミックス基礎科学討論会講演要旨集. 34. 92-93 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 田村英樹: "導電性粉体用電熱爆発溶射法の開発:高融点セラミックスの溶射例" 電気学会一般産業研究会資料. GID-96. 27-35 (1995)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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