지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
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A high thermal conductive AlN composite coating is attractive in thermal management applications. In this study, AlN-YAG composite coatings were manufactured by atmospheric plasma spraying from two different powders: spray-dried and plasma-treated. The mixture of both AlN and YAG was first mechanically alloyed and then spray-dried to obtain an agglomerated powder. The spray-dried powder was primarily spherical in shape and composed of an agglomerate of primary particles. The decomposition of AlN was pronounced at elevated temperatures due to the porous nature of the spray-dried powder, and was completely eliminated in nitrogen environment. A highly spherical, dense AlN-YAG composite powder was synthesized by plasma alloying and spheroidization (PAS) in an inert gas environment. The AlN-YAG coatings consisted of irregular-shaped, crystalline AlN particles embedded in amorphous YAG phase, indicating solid deposition of AlN and liquid deposition of YAG. The PAS-processed powder produced a lower-porosity and higher-hardness AlN-YAG coating due to a greater degree of melting in the plasma jet, compared to that of the spray-dried powder. The amorphization of the YAG matrix was evidence of melting degree of feedstock powder in flight because a fully molten YAG droplet formed an amorphous phase during splat quenching.
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참고문헌 (16)
참고문헌 신청
공만식 / 2007 / AlN 세라믹의 hot pressing에 사용되는 Y2O3 및 Al2O3 소결조제의 효과 / 한국재료학회지 17(10):560~566
F. Miyashiro / 1990 / IEEE Trans. Compon. Hybrids Manuf. Technol 13:313
H. O. Pierson / 1996 / Handbook of Refractory Carbides and Nitrides / Noyes Publications :237~238
A. W. Weimer / 1997 / Carbide, Nitride and Boride Materials Synthesis and Processing / Chapman & Hall :3~68
A. W. Weimer / 1994 / J. Am. Ceram. Soc 77(1):3
F. Miyashiro / 1990 / IEEE Trans. Compon. Hybrids Manuf. Technol 13:313
H. O. Pierson / 1996 / Handbook of Refractory Carbides and Nitrides / Noyes Publications :237~238
A. W. Weimer / 1997 / Carbide, Nitride and Boride Materials Synthesis and Processing / Chapman & Hall :3~68
A. W. Weimer / 1994 / J. Am. Ceram. Soc 77(1):3
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