{"title":"Effect of TiB2, TiC and TiN protective coatings on tensile strength and fracture behaviour of SiC monofilament fibres","authors":"K.L. Choy , J.F. Durodola , B. Derby , C. Ruiz","doi":"10.1016/0010-4361(95)92618-M","DOIUrl":null,"url":null,"abstract":"<div><p>TiB<sub>2</sub>, TiC and TiN have been studied as potential protective coatings to prevent the deleterious interfacial reactions between SiC fibres and Ti alloy matrices. These coatings have been deposited on to resistively heated SiC monofilament fibres at reduced pressure in a cold wall reactor by a chemical vapour deposition technique. Microstructure, strength and fracture properties of SiC fibres coated with the different protective coatings were evaluated and compared. The adhesion of the TiC coating on SiC fibre was comparatively weaker than that of the TiB<sub>2</sub> coating. The strength of SiC monofilaments coated with TiC was lower than that of monofilaments coated with TiB<sub>2</sub>. The morphology of TiN coatings revealed severe cracking and spalling. Results of a thermoelastic stress analysis were helpful in interpreting these experimental observations.</p></div>","PeriodicalId":100296,"journal":{"name":"Composites","volume":"26 8","pages":"Pages 531-539"},"PeriodicalIF":0.0000,"publicationDate":"1995-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0010-4361(95)92618-M","citationCount":"24","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Composites","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/001043619592618M","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 24
Abstract
TiB2, TiC and TiN have been studied as potential protective coatings to prevent the deleterious interfacial reactions between SiC fibres and Ti alloy matrices. These coatings have been deposited on to resistively heated SiC monofilament fibres at reduced pressure in a cold wall reactor by a chemical vapour deposition technique. Microstructure, strength and fracture properties of SiC fibres coated with the different protective coatings were evaluated and compared. The adhesion of the TiC coating on SiC fibre was comparatively weaker than that of the TiB2 coating. The strength of SiC monofilaments coated with TiC was lower than that of monofilaments coated with TiB2. The morphology of TiN coatings revealed severe cracking and spalling. Results of a thermoelastic stress analysis were helpful in interpreting these experimental observations.
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