Fiber-reinforced ceramic matrix composites processed by a hybrid technique based on chemical vapor infiltration, slurry impregnation and spark plasma sintering

Abstract

Abstractto explain the mechanical properties achieved. One main important result of this study is that LP-SPS can be used in some hybrid processes to densify fiber reinforced CMC.

Spark Plasma Sintering of Ceramic Matrix Composites with Self‐Healing Matrix

“…Multidirectional fiber preforms, fabricated from ex-PAN carbon fibers were used. Their main characteristics were given in a previous paper [2].…”

“…The strengthening and toughening of silicon nitride by reinforcement with continuous fibers has received considerable attention in recent years. Si 3 N 4 reinforced with carbon fibers can be fabricated by high temperature sintering under pressure: HP-HIP [1] at 1800°C or by Spark Plasma Sintering (SPS) [2] at 1650°C. The coefficient of thermal expansion (CTE) of carbon fibers is anisotropic (it is very low and even negative along the axis but large and positive radially: CTE C// =-0.1x10 -6 K -1 ; CTE C┴ =10x10 -6 K -1 ) and different from that of Si 3 N 4 (CTE Si3N4 =2.8-3.5x10 -6 K -1 ).…”

“…The hybrid process used for the fabrication of the composite is based (i) on CVI fiber coating, (ii) on slurry infiltration of ceramic powders into the multidirectional-continuous fiber preforms and (iii) on densification by Spark Plasma Sintering of the composite. This process was developed in our laboratory and has been reported somewhere else [2]. The matrix is a ceramic constituted of Si 3 N 4 and TiB 2 phases.…”

Preparation and Mechanical Properties of Continuous Carbon Nanotube Networks Modified Cf/SiC Composite

“…Continuous carbon fiber reinforced ceramic matrix composites (CFCMCs) have many advantages, such as low density, high strength, high fracture toughness, and oxidation resistance, and are the most promising candidates for applications in harsh conditions [1][2][3][4][5]. Currently, C f /SiC composites are extensively studied and have been mainly applied to engine combustion chamber, aerospace heat shield, and friction materials [6,7].…”

Room temperature reaction of polycarbosilane with iodine under different atmospheres for polymer-derived silicon carbide fibres

“…[1][2][3][4] The growing demand for light-weight, high-modulus, and high-temperature-resistant materials for high-temperature applications such as aerospace applications, high-efficiency turbines, and high-temperature reactors, has necessitated the continued development of higher-grade SiC bres. [1][2][3][4] The growing demand for light-weight, high-modulus, and high-temperature-resistant materials for high-temperature applications such as aerospace applications, high-efficiency turbines, and high-temperature reactors, has necessitated the continued development of higher-grade SiC bres.…”