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[1]余磊,杨建,丘泰.(ZrB2+ZrC)/Zr3[Al(Si)]4C6复相陶瓷在1 000~1 300 ℃空气中的恒温氧化行为[J].南京工业大学学报(自然科学版),2014,36(05):1-6.[doi:10.3969/j.issn.1671-7627.2014.05.001]
 YU Lei,YANG Jian,QIU Tai.Isothermal oxidation behavior of(ZrB2+ZrC)/Zr3[Al(Si)]4C6 composite at 1 000-1 300 ℃ in air[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(05):1-6.[doi:10.3969/j.issn.1671-7627.2014.05.001]
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(ZrB2+ZrC)/Zr3[Al(Si)]4C6复相陶瓷在1 000~1 300 ℃空气中的恒温氧化行为()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年05期
页码:
1-6
栏目:
出版日期:
2014-09-30

文章信息/Info

Title:
Isothermal oxidation behavior of(ZrB2+ZrC)/Zr3[Al(Si)]4C6 composite at 1 000-1 300 ℃ in air
文章编号:
1671-7627(2014)05-0001-06
作者:
余磊杨建丘泰
南京工业大学 材料科学与工程学院,江苏 南京 210009
Author(s):
YU LeiYANG JianQIU Tai
College of Materials Science and Engineering,Nanjing Tech University, Nanjing 210009, China
关键词:
(ZrB2+ZrC)/Zr3[Al(Si)]4C6 氧化动力学 氧化层 氧化机制
Keywords:
(ZrB2+ZrC)/Zr3[Al(Si)]4C6 oxidation kinetics oxide layer oxidation mechanism
分类号:
TB321
DOI:
10.3969/j.issn.1671-7627.2014.05.001
文献标志码:
A
摘要:
对原位热压烧结制备的(ZrB2+ZrC)/Zr3[Al(Si)]4C6复相陶瓷在1 000~1 300 ℃空气中的恒温氧化行为进行研究。结果表明:随着氧化温度的升高和氧化时间的延长,复相陶瓷的氧化增量和氧化速率均逐渐增大,材料的氧化过程遵循抛物线规律。ZrB2+ZrC的引入降低了材料的抗氧化性能,复相陶瓷的氧化层表面主要由m-ZrO2、少量t-ZrO2和莫来石组成,疏松多孔,未能形成有效阻止氧扩散的致密氧化膜。在相同氧化温度和氧化时间下,(ZrB2+ZrC)/Zr3[Al(Si)]4C6复相陶瓷的单位面积氧化增量、氧化速率以及氧化层厚度均大于单相Zr3[Al(Si)]4C6陶瓷。
Abstract:
The isothermal oxidation behavior of(ZrB2+ZrC)/Zr3[Al(Si)]4C6 composite prepared by in situ hot-pressing at 1 000-1 300 ℃ in air was investigated. With the increase of oxidation temperature and time, the oxidation weight gain and oxidation rate of the composite increased gradually, and the oxidation kinetics of the composite generally followed a parabolic law. With the incorporation of(ZrB2+ZrC), the oxidation resistance of the composite became poor. The surfaces of the oxide layer had a loose and porous structure, consisting of mainly m-ZrO2, a little t-ZrO2 and mullite, and there were no dense oxide films preventing the inward diffusion of oxygen element effectively. At the same oxidation temperature and time, the weight gain per unit surface area, oxidation rate and oxide thickness of(ZrB2+ZrC)/Zr3[Al(Si)]4C6 composite were higher than those of monolithic Zr3[Al(Si)]4C6.

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备注/Memo

备注/Memo:
收稿日期:2013-09-02
基金项目:长江学者和创新团队发展计划(IRT1146); 江苏高校优势学科建设工程; 江苏省普通高校研究生科研创新计划(CXZZ13_0423); 高性能陶瓷和超微结构国家重点实验室开放课题(SKL201108SIC)
作者简介:余磊(1987—),男,江苏宜兴人,博士生,主要研究方向为高温结构陶瓷材料; 丘泰(联系人),教授,E-mail: qiutai@njtech.edu.cn..
更新日期/Last Update: 2014-09-20