Paper Title:
Microstructural and Thermo-Mechanical Characterization of Yttria Ceramic Cores for Investment Casting, with and without Particulate Reinforcement
  Abstract

Yttria is an interesting material for the production of high performance ceramic cores for Directionally Solidified investment casting. DS casting of superalloys of the last generation challenge conventional silica ceramic cores, because of the high temperatures and the long times involved. Compared to silica, yttria is characterized by improved mechanical properties and higher chemical resistance at high temperatures. Submicronic and nanometric SiC reinforcements were tested in order to increase compression creep resistance of yttria. Oxidation resistance of both reinforcements was tested in conditions simulating the industrial process. The experimental results demonstrated the increase of compression creep resistance and showed that the industrial application of yttria ceramic cores reinforced with submicronic SiC is possible with minimal changes to current practices, thanks to a high enough oxidation resistance.

  Info
Periodical
Edited by
Pietro VINCENZINI, Sheldon WIEDERHORN and Paolo COLOMBO
Pages
33-38
DOI
10.4028/www.scientific.net/AST.65.33
Citation
L. Beaulardi, A. Brentari, M. Labanti, E. Leoni, C. Mingazzini, S. Sangiorgi, M. Villa, "Microstructural and Thermo-Mechanical Characterization of Yttria Ceramic Cores for Investment Casting, with and without Particulate Reinforcement", Advances in Science and Technology, Vol. 65, pp. 33-38, 2010
Online since
October 2010
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: M.S.J.G. Alendouro, Regina da Conceição Corredeira Monteiro, C.F.M.L. Figueiredo, Rui Miguel S. Martins, Rui Jorge C. Silva, M.C. Ferro, Maria Helena F.V. Fernandes
827
Authors: M. Erol, S. Küçükbayrak, A. Ersoy-Meriçboyu, M. Lutfy Öveçoğlu
1839
Authors: Yi Wen Hu, Xin Zhang, Yin Wu, Wen Jie Si
Abstract:Zirconia ceramics are now widely used in dental restorations. The veneering porcelain chipping happens sometimes in zirconia-porcelain...
528
Authors: X.Y. Bao, Song Li, Xiao Xia Tang, Yue Zhang
Chapter 1: Novel Processing and Manufacturing
Abstract:Non-oxide ceramics derived from organo-elemental precursors in the system Si-N-C has attracted much attention for its excellent properties....
306
Authors: Feng Jiao Liu, Ming Hao Fang, Yan Gai Liu, Zhao Hui Huang
Chapter 2: Engineering Ceramics and Ceramic Composites
Abstract:The erosion wear resistance of YSZ ceramics is worth studying because solid particle erosion is one of the main causes of destroying the...
451