TY - JOUR
T1 - Effect of Ti dopant on the mechanical properties and oxidation behavior of Zr2[Al(Si)]4C5 ceramics
AU - Lu, Xinpo
AU - Xiang, Huimin
AU - He, Ling Feng
AU - Sun, Luchao
AU - Zhou, Yanchun
PY - 2011/6
Y1 - 2011/6
N2 - Ti-doped Zr2[Al(Si)]4C5 solid solutions were prepared by an in situ hot-pressing method and its effect on the mechanical properties and high-temperature oxidation behavior were investigated. The solid solutions show comparable hardness, strength, and fracture toughness with Zr2[Al(Si)]4C5 except modulus, which decreases with Ti dopant content. The stiffness is maintained up to 1600°C, which derives from the clean grain boundaries without glassy phases. The oxidation resistance of [Zr1-x(Ti)x]2[Al(Si)] 4C5 solid solutions at 1000°-1300°C is improved remarkably. The improved oxidation resistance is mostly due to the formation of a more protective oxide scale consisting of (Zr,Ti)O2, Al 2O3, and mullite.
AB - Ti-doped Zr2[Al(Si)]4C5 solid solutions were prepared by an in situ hot-pressing method and its effect on the mechanical properties and high-temperature oxidation behavior were investigated. The solid solutions show comparable hardness, strength, and fracture toughness with Zr2[Al(Si)]4C5 except modulus, which decreases with Ti dopant content. The stiffness is maintained up to 1600°C, which derives from the clean grain boundaries without glassy phases. The oxidation resistance of [Zr1-x(Ti)x]2[Al(Si)] 4C5 solid solutions at 1000°-1300°C is improved remarkably. The improved oxidation resistance is mostly due to the formation of a more protective oxide scale consisting of (Zr,Ti)O2, Al 2O3, and mullite.
UR - http://www.scopus.com/inward/record.url?scp=79958145065&partnerID=8YFLogxK
U2 - 10.1111/j.1551-2916.2010.04300.x
DO - 10.1111/j.1551-2916.2010.04300.x
M3 - Article
AN - SCOPUS:79958145065
SN - 0002-7820
VL - 94
SP - 1872
EP - 1877
JO - Journal of the American Ceramic Society
JF - Journal of the American Ceramic Society
IS - 6
ER -