Microstructure, Phase and Thermoelastic Properties of Laminated Liquid-Phase-Sintered Silicon Carbide-Titanium Carbide Ceramic Composites

• Published in: Journal of the American Ceramic Society Vol. 90; no. 7; pp. 2189 - 2195
• Main Authors: Liversage, John H., McLachlan, David S., Sigalas, Iakovos, Herrmann, Mathias
• Format: Journal Article
• Language: English
• Published: Malden, USA Blackwell Publishing Inc 01.07.2007; Blackwell; Wiley Subscription Services, Inc
• Subjects: Aluminum oxide; Applied sciences; Building materials. Ceramics. Glasses; Carbides; Ceramic industries; Ceramics; Cermets, ceramic and refractory composites; Chemical industry and chemicals; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Materials science; Microstructure; Miscellaneous; Modulus of elasticity; Other materials; Physics; Silicon; Silicon carbide; Specific materials; Stacking; Technical ceramics; Thermoelastic properties; Titanium alloys; Ceramic matrix composite; Stratified material; Mechanical properties; Liquid phase sintering; Experimental study; X ray diffraction; Composite material; Titanium carbide; Hot pressing; Silicon carbide; Functionnally graded material; Manufacturing; Microstructure; Raman spectrum; Carbides
• ISSN: 0002-7820; 1551-2916
• DOI: 10.1111/j.1551-2916.2007.01666.x

Hot‐pressed silicon carbide–titanium carbide (SiC—TiC) composites sintered with liquid‐phase forming Al2O3 and Y2O3 mixtures have been studied. Samples were fabricated by successively stacking tape‐cast sheets of a single composition, resulting in a laminated body of uniform composition. This approach required the development of a technology easily transferable into the production of functionally graded SiC–TiC materials. The effects of this processing route on the resultant microstructures and phases were explored in detail. Additionally, because of the consequences for graded materials, the effects of TiC proportion on the thermal expansion coefficients, Young's modulus, and Poisson's ratios for several SiC–TiC composites were also determined.