Oxidation Behavior of ZrB<sub>2</sub>-15vol.%SiC at an Oxygen Partial Pressure of 57 Pa-Reference-Cited by-同舟云学术

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

Published:2011-07 Issue: Volume:484 Page:21-25
ISSN:1662-9795
Container-title:Key Engineering Materials
language:
Short-container-title:KEM

Author:

Momozawa Ai¹,Kubota Yuuki²,Tu Rong³,Goto Takashi⁴,Takagi Ken-Ichi¹,Komurasaki Kimiya⁵,Hatta Hiroshi⁶

Affiliation:

1. Faculty of Engineering

2. Faculty of Industrial Science and Technology

3. Institute for Materials Research

4. Tohoku University

5. The University of Tokyo

6. Institute of Space and Astronautical Science

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.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

Link

https://www.scientific.net/KEM.484.21.pdf

Reference6 articles.

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