Journal of Powder Materials (한국분말재료학회지)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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Preparation of Suspension in La2O3-Gd2O3-ZrO2 System via Planetary Mill and Characteristics of (La1-xGdx)2Zr2O7 Coatings Fabricated via Suspension Plasma Spray

유성구볼밀을 이용한 La2O3-Gd2O3-ZrO2 계 서스펜션준비와 서스펜션 플라즈마용사를 이용한 (La1-xGdx)2Zr2O7 코팅증착과 특성

  • Kwon, Chang-Sup (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Lee, Sung-Min (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Oh, Yoon-Suk (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Kim, Hyung-Tae (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology) ;
  • Jang, Byung-Koog (High Temperature Materials Unit, National Institute for Materials Science) ;
  • Kim, Seongwon (Engineering Ceramic Center, Korea Institute of Ceramic Engineering and Technology)
  • 권창섭 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 이성민 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 오윤석 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 김형태 (한국세라믹기술원 엔지니어링세라믹센터) ;
  • 장병국 (물질.재료연구기구 (NIMS) 선진고온재료유닛트) ;
  • 김성원 (한국세라믹기술원 엔지니어링세라믹센터)
  • Received : 2013.11.20
  • Accepted : 2013.12.16
  • Published : 2013.12.28
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Abstract

Lanthanum/gadolinium zirconate coatings are deposited via suspension plasma spray with suspensions fabricated by a planetary mill and compared with hot-pressed samples via solid-state reaction. With increase in processing time of the planetary mill, the mean size and BET surface area change rapidly in the case of lanthanum oxide powder. By using suspensions of planetary-milled mixture between lanthanum or gadolinium oxide and nano zirconia, dense thick coatings with fully-developed pyrochlore phases are obtained. The possibilities of these SPS-prepared coatings for TBC application are also discussed.

Keywords

References

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