Approach to Optimum Layer Structure of Functionally Graded Materials

Abstract:

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Minimum interlayer numbers of functionally graded materials (FGMs) are studied based on the empirical analysis of thermal stress due to the differences in the thermal expansion coefficient  and temperature T between sintering and room temperatures. It is found the maximum ,   and the minimum interlayer number necessary to produce a NiCr / Fly ash FGM structure without interface cracking were 4.0×10-6 K-1, 1080 K, 0.043 and 2, respectively. The condition  < 0.043 was derived and confirmed to be valid for available FGM systems.

Info:

Periodical:

Materials Science Forum (Volumes 631-632)

Edited by:

Akira Kawasaki, Akinaga Kumakawa and Masayuki Niino

Pages:

29-34

DOI:

10.4028/www.scientific.net/MSF.631-632.29

Citation:

K. Hasezaki and Y. Noda, "Approach to Optimum Layer Structure of Functionally Graded Materials", Materials Science Forum, Vols. 631-632, pp. 29-34, 2010

Online since:

October 2009

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Price:

$35.00

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