TY - GEN
T1 - Microstructure characteristics and high-temperature performance of in-situ reinforced α-SiAlON ceramics
AU - Zhou, Yu
AU - Ye, Feng
AU - Liu, Chunfeng
PY - 2010
Y1 - 2010
N2 - Rare-earth Lu, Y and Nd oxides were adopted to stabilize α-SiAlON by hot-pressing. The results show that the addition of excess rare-earth not only promote α-SiAlON densification, but also facilitates the development of elongated α-SiAlON grains. The obtained materials are both hard and tough. The Vickers hardness, flexural strength and fracture toughness are improved remarkably. The Lu-doped α-SiAlONs present an excellent high-temperature performance. It is attributed to the formation of the refractory intergranular phase, Lu-J1(Lu4Si2-xAlxO 7+xN2-x). The flexural strength at 1400°C can reach 550MPa. A thin dense oxidation layer is formed after oxidation at 1300C in air.
AB - Rare-earth Lu, Y and Nd oxides were adopted to stabilize α-SiAlON by hot-pressing. The results show that the addition of excess rare-earth not only promote α-SiAlON densification, but also facilitates the development of elongated α-SiAlON grains. The obtained materials are both hard and tough. The Vickers hardness, flexural strength and fracture toughness are improved remarkably. The Lu-doped α-SiAlONs present an excellent high-temperature performance. It is attributed to the formation of the refractory intergranular phase, Lu-J1(Lu4Si2-xAlxO 7+xN2-x). The flexural strength at 1400°C can reach 550MPa. A thin dense oxidation layer is formed after oxidation at 1300C in air.
UR - https://www.scopus.com/pages/publications/77955585907
U2 - 10.1002/9780470909836.ch18
DO - 10.1002/9780470909836.ch18
M3 - 会议稿件
AN - SCOPUS:77955585907
SN - 9780470889367
T3 - Ceramic Transactions
SP - 197
EP - 205
BT - Design, Development, and Applications of Engineering Ceramics and Composites - A Collection of Papers Presented at the 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM 8
PB - American Ceramic Society
T2 - 8th Pacific Rim Conference on Ceramic and Glass Technology, PACRIM-8
Y2 - 31 May 2009 through 5 June 2009
ER -