Paper Title:
Mechanical Properties of Nb2O5-Al2O3 Ceramics Prepared by Microwave Sintering
  Abstract

The influence of Nb2O5 on the phase and microstructure evaluation and mechanical properties of Nb2O5-Al2O3 ceramics sintered with 2.45 GHz microwave energy was investigated. The results showed that Nb2O5 could densify the pure alumina with a lower sintering temperature and a short sintering time. Nb2O5 reacted with Al2O3 to form AlNbO4 completely and the amount of AlNbO4 increased with the increasing content of Nb2O5, distributing at the Al2O3 grain boundaries. The specimen doped with 10 vol.% Nb2O5 sintered at 1500 °C exhibited plenty of columnar grains with draw ratio about 1:3. The existence of columnar grains enhanced the microhardness and fracture toughness of Nb2O5-Al2O3 ceramics.

  Info
Periodical
Chapter
Chapter 1: Advanced Design Technology
Edited by
Xiaodong Zhang, Zhijiu Ai, Prasad Yarlagadda and Yun-Hae Kim
Pages
120-123
DOI
10.4028/www.scientific.net/AMR.338.120
Citation
Y. L. Ai, F. He, B. L. Liang, W. He, W. H. Chen, "Mechanical Properties of Nb2O5-Al2O3 Ceramics Prepared by Microwave Sintering", Advanced Materials Research, Vol. 338, pp. 120-123, 2011
Online since
September 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: N. Gupta, P. Mallik, M.H. Lewis, B. Basu
817
Authors: Tao Jiang, Hai Yun Jin, Zhi Hao Jin, Jian Feng Yang, Guan Jun Qiao
Abstract:The machinable B4C/BN ceramics composites were fabricated by hot-pressing sintering process at 1850oC for 1h under the pressure of 30MPa....
53
Authors: Uraiwan Intatha, Sukum Eitssayeam, Kamonpan Pengpat, Gobwute Rujijanagul, Tawee Tunkasiri
Abstract:In this work, preparation conditions and effect of ZrO2 doped BaFe0.5Nb0.5O3 ceramics were studied. Relationship between structure and...
889
Authors: Rong Xia Huang, Yu Zhen Zhao, Yong Jie Zhao, Rong Zheng Liu, He Ping Zhou
Abstract:Lead-free K0.5Na0.5NbO3-xwt% (0.4ZnO-0.6B2O3) ceramics were synthesized by...
315
Authors: Jia Mao Li, Tai Qiu
Chapter 3: Electrical, Magnetic and Optical Ceramics
Abstract:Microstructures and microwave dielectric properties of Ca(Sm0.5Nb0.5)O3 ceramics, prepared by a conventional...
1198