Paper Title:
Approach to Optimum Layer Structure of Functionally Graded Materials
  Abstract

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, 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
$32.00
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