Advanced Ceramics with Dual Functions of Healing and Decomposition-Reference-Cited by-同舟云学术

Advanced Ceramics with Dual Functions of Healing and Decomposition

Published:2024-01-29 Issue:3 Volume:17 Page:647
ISSN:1996-1944
Container-title:Materials
language:en
Short-container-title:Materials

Author:

Sekine Nobuhide¹^ORCID,Nakajima Yasushi²,Kamo Takahiro²,Ito Masahiro²,Nakao Wataru³

Affiliation:

1. Graduate School of Engineering, Yokohama National University, Tokiwadai 79-5, Hodogaya-ku, Yokohama 240-8501, Kanagawa, Japan

2. DAIICHI KIGENSO KAGAKU KOGYO CO., LTD., Kitahama 4-4-9, Chuo-ku, Osaka-shi 541-0041, Osaka, Japan

3. Faculty of Engineering, Yokohama National University, Tokiwadai 79-5, Hodogaya-ku, Yokohama 240-8501, Kanagawa, Japan

Abstract

This study developed advanced ceramic materials with both healing and decomposition functions using a metastable product generated under superheated steam. The developed composite material comprises ZrC particles dispersed in a yttria-stabilized zirconia (YSZ) matrix. After introducing a surface crack of approximately 120 μm on the composite specimen, it showed a complete strength recovery rate after one hour of heat treatment under superheated steam at 400 °C, while it exhibited a decomposition behavior after one hour of heat treatment in air at 400 °C. The XRD analysis of the heat-treated specimens showed that the final product was monoclinic ZrO2 under both steam and air conditions. In other words, full strength recovery in superheated steam was achieved by a chain reaction involving metastable intermediate products derived from H2O, unlike the reaction in air.

Publisher

MDPI AG

Subject

General Materials Science

Link

https://www.mdpi.com/1996-1944/17/3/647/pdf

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