Codoping of Alumina to Enhance Creep Resistance

• Published in: Journal of the American Ceramic Society Vol. 82; no. 6; pp. 1497 - 1504
• Main Authors: Li, Yan-Zun, Wang, Chongmin, Chan, Helen M., Rickman, Jeffrey M., Harmer, Martin P., Chabala, Jan M., Gavrilov, Konstantin L., Levi-Setti, Riccardo
• Format: Journal Article
• Language: English
• Published: Westerville, Ohio American Ceramics Society 01.06.1999; Blackwell; Wiley Subscription Services, Inc
• Subjects: Condensed matter: structure, mechanical and thermal properties; Creep; Defects and impurities in crystals; microstructure; Doping and impurity implantation in other materials; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Grain and twin boundaries; Mechanical and acoustical properties of condensed matter; Mechanical properties of solids; Physics; Solubility, segregation, and mixing; phase separation; Structure of solids and liquids; crystallography; Grain boundaries; Inorganic compounds; Creep; Segregation; Experimental study; Scandium additions; Zirconium additions; Neodymium additions; SEM; SIMS; Microstructure; Codoping; Aluminium oxides

The tensile creep behavior of both singly and multiply doped alumina samples has been investigated in order to understand better the impact of dopant segregation to grain boundaries on observed creep resistance. Previous studies have suggested that the segregation of the oversized dopant ions reduce...