Sökning: "Al2O3 K-phase"

Hittade 2 avhandlingar innehållade orden Al2O3 K-phase.

1. 1. Structure and energetics of kappa alumina (-Al2O3) calculated from first principles

   Författare :Yashar Yourdshahyan; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; electronic properties; structure; plane-waves; local-density-approximation; stability; ceramics materials; Al2O3 K-phase; pseudopotentials; density-functional theory;

   Sammanfattning : .... LÄS MER

3. 2. Bi-based high Tc superconductors and enhancement of critical current density

   Författare :Shi-ju Guo; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Material Mechanics; Materialmekanik;

   Sammanfattning : Basic bulk high temperature superconductors in the Bi-Sr-Ca-Cu-O system and the BiPb-Sr-Ca-Cu-O system were prepared through the solid state reaction route and the coprecipitation method. The formation of 110 K phase promoted by partial Pb substitution for Bi was studied. Effects of heat treatment on 110K phase formation were studied. LÄS MER