DataVXAdvanced Engineering MaterialsPaper
journal article·2019-09

The Surface Cracking Resistance of Al2O3‐Modified SiCf/SiC‐B4C Composites after Cyclic Oxidation in Wet Environment

Qingliang Shan, Qinglei Wang, Yudong Xue, Jianbao Hu, Jinshan Yang, Haijun Zhou, Guangxiang Zhu, Shaoming Dong

Advanced Engineering Materials· Volume 21· Issue 9
Publisher page
Source abstract

Abstract

Aluminum oxide is introduced into SiCf/(SiC + B4C) composites to improve the surface cracking resistance after oxidizing at 1100 °C in O2/H2O (40/60) atmosphere. Research on morphology observation of oxidized composites reveals that Al2O3 can lead to the formation of a dense and smooth oxidation layer, resulting in a relatively shallow oxygen penetration depth. In‐depth studies on acoustic emission reveal that composites with Al2O3 can improve the surface cracking resistance after oxidizing at 1100 °C in O2/H2O (40/60) atmosphere since the retention rates of σmin (first acoustic emission [AE] stress) and σonset (AE onset stress) are significantly increased compared with virgin composites. Moreover, a small number of cumulative events and steep slope of strength–time curves at the initial stage further confirm the improvement of surface cracking resistance after oxidation.
Source: crossref · Quality: baseline

Research context

Composites

OpenAlex topics: Advanced ceramic materials synthesis · Aluminum Alloys Composites Properties · Advanced materials and composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

State Key Laboratory of High Performance Ceramics and Superfne Microstructure Shanghai Institute of Ceramics Chinese Academy of Sciences 1295 Dingxi Road Shanghai 200050 China

Structural Ceramics and Composites Engineering Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

University of Chinese Academy of Sciences Beijing 100049 China

School of Physical Science and Technology ShanghaiTech University 100 Haike Road Shanghai 201210 China

Beijing Institute of Space Mechanics & Electricity Beijing 100076 China

Funding

National Natural Science Foundation of China · Science and Technology Commission of Shanghai Municipality · Chinese Academy of Sciences

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