[1]解玉鹏,成来飞,张立同.SiCw/SiC层状结构陶瓷的制备及其应用[J].中国材料进展,2015,(6):006-10.[doi:10.7502/j.issn.1674-3962.2015.06.04]
　XIE Yupeng,CHENG Laifei*,ZHANG Litong.Fabrication and application of laminated SiCw/SiC structure ceramics[J].MATERIALS CHINA,2015,(6):006-10.[doi:10.7502/j.issn.1674-3962.2015.06.04]
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SiCw/SiC层状结构陶瓷的制备及其应用()
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中国材料进展[ISSN:1674-3962/CN:61-1473/TG]

卷:
期数:
2015年第6期
页码:
006-10
栏目:
出版日期:
2015-06-30

文章信息/Info

Title:
Fabrication and application of laminated SiCw/SiC structure ceramics
作者:
解玉鹏; 成来飞 ; 张立同
西北工业大学 材料学院
Author(s):
XIE Yupeng' target="_blank" rel="external">’sans-serif’">XIE Yupeng;  CHENG Laifei*;  ZHANG Litong
School of Materials Science and Engineering, Northwestern Polytechnical University
关键词:
化学气相渗透; 流延法; SiC; SiCw/SiC层状结构陶瓷; 强韧性
DOI:
10.7502/j.issn.1674-3962.2015.06.04
文献标志码:
A
摘要:
提出了采用流延法(Tape Casting，TC)结合化学气相渗透法(Chemical Vapor Infiltration，CVI)制备SiCw/SiC层状结构陶瓷的方法，分析了TC-CVI方法的特点，阐述了SiCw/SiC层状结构陶瓷的强韧化机理及其应用。结果表明：TC-CVI制备方法通过提高晶须体积分数和减少对晶须的损伤来提高材料的强度；通过控制层内和层间界面结合强度来提高材料的韧性。与传统热压烧结工艺制备的层状结构陶瓷相比，TC-CVI制备的SiCw/SiC层状结构陶瓷中晶须含量可达40 vol.%，其主要增韧机制为层间和层内裂纹偏转、裂纹桥接和晶须拔出等。该材料具有较高的弯曲强度、拉伸强度和断裂韧性，表现出良好的线性变形行为。TC-CVI工艺为制备航空发动机叶片提供了一种可行方法。
Abstract:
Tape Casting (TC) combined with chemical vapor infiltration (CVI) was proposed to fabricate laminated SiCw/SiC structural ceramics, the advantages of TC-CVI were analyzed and the strengthening/toughening mechanisms and the application of the ceramics were investigated. The results showed that this method can increase strength of the ceramics by increasing their volume fraction and reducing the damage of SiC whiskers, and increase toughness of the ceramics by controlling the interfacial bonding between whiskers and matrix and inter-laminar bonding between layers. Comparing with laminated structural ceramics fabricated by hot-press sintering method, laminated SiCw/SiC structural ceramics fabricated by TC-CVI had 40 vol.% whiskers, in which the main toughening mechanisms of the ceramics were interlaminar and interfacial crack deflection and bridging and whisker pull-out. The ceramics had higher flexural strength, tensile strength and fracture toughness, and showed a good linear deformation behavior. TC-CVI process provided a feasible method for fabrication of aero engine blade.
更新日期/Last Update: 2015-05-29