TY - JOUR
T1 - Formation of oxide films on ZrB 2-15 vol% SiC composites during oxidation
T2 - Evolution with time and temperature
AU - Karlsdottir, Sigrun N.
AU - Halloran, John W.
PY - 2009/6
Y1 - 2009/6
N2 - The evolution of convection cells features that form in oxide films on ZrB 2-SiC composites are quantified by the number population, size, and distribution in oxide films on ZrB 2-15 vol% SiC oxidized at temperatures between 1500° and 1600°C for various oxidation times. The number of convection cells per unit area increases after short exposure times of the oxidation at 1550°C, but then decreases slowly with increasing time. The results indicate that these convection cells are transient, they form and transport boria-silica-zirconia liquid to the surface but with increasing exposure time the increasing amount of flowing viscous SiO 2-rich liquid submerges them and they become extinct.
AB - The evolution of convection cells features that form in oxide films on ZrB 2-SiC composites are quantified by the number population, size, and distribution in oxide films on ZrB 2-15 vol% SiC oxidized at temperatures between 1500° and 1600°C for various oxidation times. The number of convection cells per unit area increases after short exposure times of the oxidation at 1550°C, but then decreases slowly with increasing time. The results indicate that these convection cells are transient, they form and transport boria-silica-zirconia liquid to the surface but with increasing exposure time the increasing amount of flowing viscous SiO 2-rich liquid submerges them and they become extinct.
UR - http://www.scopus.com/inward/record.url?scp=66949162633&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2009.03052.x
DO - 10.1111/j.1551-2916.2009.03052.x
M3 - Article
AN - SCOPUS:66949162633
SN - 0002-7820
VL - 92
SP - 1328
EP - 1332
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 6
ER -