Complex geometry macroporous SiC ceramics obtained by 3D-printing, polymer impregnation and pyrolysis (PIP) and chemical vapor deposition (CVD). Issue 6 (June 2021)

• Record Type: Journal Article
• Authors: Baux, A.; Jacques, S.; Allemand, A.; Vignoles, G.L.; David, P.; Piquero, T.; Stempin, M.-P.; Chollon, G.
• Is Part Of: Journal of the European Ceramic Society. Volume 41:Issue 6(2021)
• Page Start: 3274
• Page End: 3284
• Publication Date: 2021-06
• Subjects: Fused deposition modeling (FDM) -- Silicon carbide -- Polymer-derived ceramics (PDC) -- Chemical vapor deposition (CVD) -- Oxidation resistance; Ceramic materials -- Periodicals; Composite materials -- Periodicals; Matériaux céramiques -- Périodiques; Composites -- Périodiques; Ceramic materials; Composite materials; Periodicals; Electronic journals; 666.05
• DOI: 10.1016/j.jeurceramsoc.2021.01.008
• Languages: English
• ISSNs: 0955-2219

Abstract

Abstract: We present here an original route for the manufacturing of SiC ceramics based on 3D printing, polymer impregnation and pyrolysis and chemical vapor deposition (CVD). The green porous elastomer structures were first prepared by fused deposition modeling (FDM) 3D-printing with a composite polyvinyl alcohol/elastomer wire and soaking in water, then impregnated with an allylhydridopolycarbosilane preceramic polymer. After crosslinking and pyrolysis, the polymer-derived ceramics were reinforced by CVD of SiC using CH3 SiCl3 /H2 as precursor. The multiscale structure of the SiC porous specimens was examined by X-ray tomography and scanning electron microscopy analyses. Their oxidation resistance was also studied. The pure and dense CVD-SiC coating considerably improves the oxidation resistance.