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Transient Liquid Phase Bonding of Ultra High Temperature Ceramics

Research Project

Project/Area Number 21686071
Research Category

Grant-in-Aid for Young Scientists (A)

Allocation TypeSingle-year Grants
Research Field Metal making engineering
Research InstitutionKyushu University

Principal Investigator

SAITO Noritaka  九州大学, 大学院・工学研究院, 准教授 (80432855)

Project Period (FY) 2009 – 2011
Project Status Completed (Fiscal Year 2011)
Budget Amount *help
¥27,300,000 (Direct Cost: ¥21,000,000、Indirect Cost: ¥6,300,000)
Fiscal Year 2011: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2010: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2009: ¥20,800,000 (Direct Cost: ¥16,000,000、Indirect Cost: ¥4,800,000)
Keywords融体・凝固 / 濡れ性 / HfB_2 / Ni-Nb合金 / 高温濡れ性 / 界面反応 / PTLP接合 / 金属間化合物 / ニホウ化ハフニウム / ニケイ化モリブデン / ニケイ化ハフニウム / 炭化ホウ素 / 炭化ケイ素 / 真空焼結 / ガス圧焼結 / ホットプレス / 静滴法 / 二ホウ化ハフニウム / 二ケイ化モリブデン / 二ケイ化ハフニウム / 液相焼結
Research Abstract

An effective joining strategy suitable for ultra high temperature ceramics will have to be developed for their wider application. In the present study, the wetting behavior of molten Ni-Nb alloys that will form during the PTLP bonding using Ni/Nb/Ni interlayer on a HfB2 composite processed with MoSi2 addition was systematically investigated. Additionally, a trial on PTLP bond of HfB2 composite with a Ni/Nb/Ni interlayer was also performed at 1500°C. The contact angles of all Ni-Nb alloys rapidly decreased with time and showed good wetting against HfB2 composite. Among them, the pure Ni droplet totally disappeared around 1400°C during heating. SEM-WDS microstructural analysis on the cross section of the wetting sample revealed that the reaction layer contained multiple intermetallic compounds involving Si, suggesting the reaction with the sintering aid MoSi2. With the 40at% Nb addition, the interfacial reaction at the Ni-Nb alloy/HfB2 composite interface was suppressed. Consequently, it was revealed that a well-bonding interface was achieved when HfB2 composite was bonded using the Ni/Nb/Ni interlayer.

Report

(4 results)
  • 2011 Annual Research Report   Final Research Report ( PDF )
  • 2010 Annual Research Report
  • 2009 Annual Research Report
  • Research Products

    (6 results)

All 2012 2010 Other

All Journal Article (1 results) Presentation (5 results)

  • [Journal Article] Wettability and Transient Liquid Phase Bonding of Hafnium Diboride Composite with Ni-Nb Alloys

    • Author(s)
      Noritaka SAITO, Hiroyuki IKEDA, Andreas M. Glaeser, and Kunihiko NAKASHIMA
    • Journal Title

      Journal of Materials Science, s0ubmitted

    • Related Report
      2011 Final Research Report
  • [Presentation] ホウ化ハフニウムの結晶粒径に及ぼすジルコニアの影響2012

    • Author(s)
      山岡由宗
    • Organizer
      資源・素材学会平成24年度(2012年)春季大会
    • Place of Presentation
      東京大学
    • Year and Date
      2012-03-27
    • Related Report
      2011 Annual Research Report
  • [Presentation] Wettability of Hafnium Diboride by Molten Ni-Nb Alloys2012

    • Author(s)
      Andreas M. Glaeser, and Kunihiko NAKASHIMA
    • Organizer
      7th International Conference on High Temperature Capillarity
    • Place of Presentation
      Eilat, Israel
    • Related Report
      2011 Annual Research Report 2011 Final Research Report
  • [Presentation] Densification of Ultra-High Temperature Ceramics Using Sintering Aids2012

    • Author(s)
      Yoshinori YAMAOKA, Sohei SUKENAGA, Noritaka SAITO and Kunihiko NAKASHIMA
    • Organizer
      The 2011 International Symposium on Molecular Systems
    • Place of Presentation
      Fukuoka, Japan
    • Related Report
      2011 Final Research Report
  • [Presentation] 焼結助剤を用いた超高温耐熱セラミックスの緻密化2010

    • Author(s)
      山岡由宗, 阿部洋平, 助永壮平, 齊藤敬高, 中島邦彦
    • Organizer
      資源・素材2010秋季大会
    • Place of Presentation
      九州大学
    • Year and Date
      2010-09-15
    • Related Report
      2010 Annual Research Report
  • [Presentation] ホウ化ハフニウムの結晶粒径に及ぼすジルコニアの影響2010

    • Author(s)
      山岡由宗,助永壮平,齊藤敬高,中島邦彦
    • Organizer
      資源・素材2012春季大会
    • Place of Presentation
      東京大学
    • Year and Date
      2010-03-26
    • Related Report
      2011 Final Research Report

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Published: 2009-04-01   Modified: 2016-04-21  

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