Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview

Design, preparation and properties of non-oxide CMCs for application in engines and nuclear reactors: an overview
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DOI:
10.1016/s0266-3538(03)00230-6
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发表时间:
2004-02-01
影响因子:
9.1
通讯作者:
Naslain, R
Naslain, R
中科院分区:
材料科学1区
文献类型:
--
作者:
Naslain, R

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碳化硅基陶瓷基复合材料由嵌入碳化硅基体中的碳或碳化硅纤维组成,当通过使用薄界面相适当优化纤维/基体结合时,是一种坚韧的陶瓷。它们是根据不同的工艺路线(化学蒸汽渗透、聚合物浸渍/热解、液态硅浸渍或浆料浸渍/热压)制成的,每种工艺路线都有各自的优缺点,并简要讨论了它们的优缺点。SiC基复合材料在纤维类型(SiC基纤维的碳纤维,如Si-C-O, SiC + C或准化学量SiC增强剂),界面(焦碳或六方BN,以及(PyC-SiC)(n)或(BN SiC)(n)多层界面),基体(简单SiC或具有增强抗氧化性的基体,如自修复基质)和涂层(SiC或工程多层涂层)方面是高度可定制的材料。讨论了sic基复合材料在先进航空喷气发动机(后燃烧室热段)、电力/蒸汽热电联产燃气轮机(燃烧室)和核聚变反应等离子体室内壁等苛刻条件下的应用潜力。(C) 2003 Elsevier Ltd.版权所有。
SiC-based ceramic matrix composites, consisting of carbon or SiC fibers embedded in a SiC-matrix, are tough ceramics when the fiber/matrix bonding is properly optimized through the use of a thin interphase. They are fabricated according to different processing routes (chemical vapor infiltration, polymer impregnation/pyrolysis, liquid silicon infiltration or slurry impregnation/hot pressing) each of them displaying advantages and drawbacks which are briefly discussed. SiC-matrix composites are highly tailorable materials in terms of fiber-type (carbon fibers of SiC-based fibers such as Si-C-O, SiC + C or quasi-stoichiometric SiC reinforcements), interphase (pyrocarbon or hexagonal BN, as well as (PyC-SiC)(n) or (BN SiC)(n) multilayered interphases), matrix (simple SiC or matrices with improved oxidation resistance, such as self-healing matrices) and coatings (SiC or engineered multilayered coatings). The potential of SiC-matrix composites for application in advanced aerojet engines (after-burner hot section), gas turbine of electrical power/steam cogeneration (combustion chamber) and inner wall of the plasma chamber of nuclear fusion reaction, all of them corresponding to very severe conditions is discussed. (C) 2003 Elsevier Ltd. All rights reserved.