Paper Title:
Oxidation Behavior of ZrB2-15vol.%SiC at an Oxygen Partial Pressure of 57 Pa
  Abstract

The oxidation tests of the ZrB2-15vol.%SiC composite were carried out at 1673-1923 K under a low partial pressure of oxygen. Cross sections of the oxidized samples were studied using WDS. The reaction layer consists of ZrO2 and SiO2 at 1673 K. The SiO2 protective layer is formed on the surface. No apparent SiC depleted layer is observed. SiC depletion seems to occur at 1923 K and only the ZrO2 phase exists at the reaction layer. The passive oxidation occurs at 1673 K, whereas the active oxidation at 1923 K. The mass changes are quantitatively discussed by introducing a new emprical equation. The ZrB2-30 vol.%SiC composite is also discussed briefly.

  Info
Periodical
Edited by
Takashi Goto, Yi-Bing Cheng and Takashi Akatsu
Pages
21-25
DOI
10.4028/www.scientific.net/KEM.484.21
Citation
A. Momozawa, Y. Kubota, R. Tu, T. Goto, K.-I. Takagi, K. Komurasaki, H. Hatta, "Oxidation Behavior of ZrB2-15vol.%SiC at an Oxygen Partial Pressure of 57 Pa", Key Engineering Materials, Vol. 484, pp. 21-25, 2011
Online since
July 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: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Zhen Bing Cai, Min Hao Zhu, Xiu Zhou Lin, Ji Liang Mo, Zhong Rong Zhou
Abstract:Nickel base Ni60 and cobalt base Co-Cr-W coatings were prepared on substrate of refractory alloy steel 4Cr14NiW2Mo by laser-cladding...
878
Authors: Qiang Shen, Chang Lian Chen, Fei Chen, Qi Wen Liu, Lian Meng Zhang
Abstract:Porous calcia stabilized zirconia ceramics (CSZC) with closed pores were presurelessly sintered by adding different contents of zirconia...
435
Authors: Cheng Long Yu, Xin Hao, Hong Tao Jiang, Li Li Wang, Zheng Guang Zhang, Xiu Feng Wang
Chapter 1: Materials Science and Engineering
Abstract:α-Al2O3 platelets were prepared in the interface of Na2O-CaO-SiO2 glass induced by Al. The...
110
Authors: Xiao Yu Zhang, Yu Jun Zhang, Hong Yu Gong, Yun Na Song
Chapter 12: Chemical Materials and Processes
Abstract:Sodium hexatitanate (Na2O•6TiO2) whiskers with an average diameter and aspect ratio of 1-3 µm and 10-20 respectively...
1339