발간논문

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Vol.33, No.10, 1309 ~ 1315, 1995
Title
Fabrication of Al / AlN Functional Gradient Materials by Direct Nitridation Method
이경재Kyung Jae Lee, 김재윤Jae Yoon Kim, 장영섭Young Seob Jang, 김석윤Suk Yoon Kim, 김용석Yong Seog Kim
Abstract
Al/AlN FGMs were fabricated by the direct nitridation of Al/AlN powder compact. The density of a compact presintered at 600℃ in argon atmosphere followed by the reaction in nitrogen atmosphere at 900℃ for 4hours was improved to 97% of theoretical density. The reaction product was consisted of a dense ceramic layer on its surface and a ceramic-Al metal mixed layer beneath the layer. The reaction layer thickness was affected by the processing variables including AlN content. Al powder size and Mg content.
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