Improved mechanical and thermomechanical properties of alumina substrate via iron doping
Made, Riko I.
Phua, Eric Jian Rong
Pramana, Stevin Snellius
Wong, Chee Cheong
Tok, Alfred Iing Yoong
Gan, Chee Lip
Date of Issue2013
School of Materials Science and Engineering
We present a method to improve the overall properties of sintered alumina substrate via iron doping that has a higher fracture toughness, lower thermal conductivity, lower thermal expansion coefficient and comparable dielectric constant to pure alumina. Such properties are beneficial for harsh environment electronic packages. X-Ray and electron probe micros analysis concluded that toughening are likely contributed by multiple phases strengthening and ruled out crack bridging or grain boundary strengthening.
DRNTU::Engineering::Mechanical engineering::Motors, engines and turbines
© 2013 Acta Materialia Inc.This is the author created version of a work that has been peer reviewed and accepted for publication in Scripta Materialia, published by Elsevier on behalf of Acta Materialia Inc. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1016/j.scriptamat.2013.02.032].