SiC陶瓷基复合材料无损检测技术研究

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中图分类号:TB332 文献标志码:A 文章编号:2095-2945(2025)30-0170-06
Abstract:Siliconcarbide(SiC)ceramicmatrixcomposites(CMCs)havebecomecritical materialsforaerospacethermal componentsduetotheiradvantagesoflowdensity,highimpactresistance,excellenthigh-temperaturetolerance,andeaseof processing.However,defectssuchaspores,cracks,anddelaminationinducedbycomplexmanufacturingprocesssandharsh serviceenvironmentsseverelycompromise their mechanical performanceandsafety.Thispaperreviews threemainstreamnondestructivetesting(NDT)techniquesforSiCCMCs:ultrasonictesting(UT),X-raytesting,andinfraredthermography(IRT), analyzingtheirrespectivestrengthsandappicationlimitations.Keytechnicalchallnges incurrentNDTevaluationare summaried,udingitefeeefroiricateomeres,suntsitivityocoectsdeckofddd protocols.The findingsprovideinsightsforadvancing defectdetectionaccuracyandreliability inhigh-performance SiC CMCs.
Keywords: SiC ceramic matrix composite;X-ray testing; ultrasonic testing;infrared testing; flaw
SiC陶瓷基复合材料具有低密度、抗冲击性能好、耐高温性和易于加工等优点,使其成为航空航天领域热端部件的理想材料4,SiC陶瓷基复合材料由于工艺复杂,涉及多个工艺环节和多种因素的相互作用,在制造和服役过程中容易产生各种缺陷5,当材料受到外力作用时,这些缺陷处的应力会急剧增加,导致材料提前失效β5,10-;缺陷也会对材料的耐高温性能产生影响,在高温环境下,缺陷处的热传导和热应力分布不均匀,容易引发材料的热疲劳和热损伤[12-13]。(剩余13165字)