Processing of in-situ SiC reinforced AlN based composites

Ayse Kalemtas; Gursoy Arslan; Pinar Kaya; Servet Turan; Ferhat Kara

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자료유형: 학술저널

저자정보: Ayse Kalemtas (Bursa Technical University) Gursoy Arslan (Anadolu University) Pinar Kaya (Anadolu University) Servet Turan (Anadolu University) Ferhat Kara (Anadolu University)

저널정보: 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제19권 제2호

발행연도: 2018.4

수록면: 119 - 125 (7page)

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In this study, highly dense (>97%) in-situ SiC reinforced AlN based ceramic-metal composites were produced by pressurelessreactive infiltration of 7075 aluminium alloys into porous α-Si3N4, α-Si3N4 + 4 wt. % carbon and α-Si3N4 + 8 wt. % carbonpreforms at 1400 oC for 4 hours under an argon gas atmosphere. X-ray diffraction and transmission electron microscopyanalysis of the designed α-Si3N4-Al and α-Si3N4-C-Al composites revealed that Si3N4 was completely consumed during theinfiltration process via reacting with the Al alloy and resulted in the formation of AlN and Si phases. The aim of the currentwork was to introduce a novel method to produce in-situ SiC reinforced AlN based ceramic-metal composites. Composites withrelatively low metal contents were successfully fabricated through incorporating active carbon to the starting α-Si3N4 powder,which in turn consumes the liberated metallic Si phase in the system via chemical reactions leading to the formation of SiCceramic phase. Formation of in-situ SiC, AlN and metallic Si were also confirmed by analytical transmission electronmicroscopy investigations.

#Ceramic-Metal Composites #Si3N4 #AlN #SiC #Reactive Infiltration #In?Situ Reactions

참고문헌 (40)

참고문헌 신청

L.M. Sheppard / 1990 / Am. Ceramic Soc. Bulletin 69(11):1801~1812

S.M. Bradshaw / 1999 / J. Am. Ceram. Soc. 82(9):2293~2300

A. Jacquot / 2002 / Applied Surface Science 186(1):507~512

S.-H. Xie / 2004 / Polymer Testing 23:797~801

R. Couturier / 1997 / J. Eur. Ceram. Soc. 17(15-16):1861~1866

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