Fabrication and properties of a dense SiC NWs‐toughened α‐Si₃N₄ composite coating on porous Si₃N₄ ceramics

Abstract

A dense SiC nanowires-toughened α-Si 3 N 4 coating was prepared using a two-step technique for protecting porous Si 3 N 4 ceramic against mechanical damage, and effect of SiC nanowires content on microstructures and properties of the coating were investigated. XRD, SEM and TEM analysis results revealed that as-prepared coatings consisted of α-Si 3 N 4 , O'-Sialon, SiC nanowires and Y-Al-Si-O-N glass phase.

Toward Ceramic Anticorrosion Coatings: A Review

“…Reprinted with permission from Li, et al94 ZrB 2 -SiC,[95][96] SiC-ZrB 2 -ZrC,97 and LaB 6 -MoSi 2 -SiC 98. Shangguan, et al,99 prepared dense SiC nanowires/α-Si 3 N 4 composite coatings on porous Si 3 N 4 ceramics by combining slurry and liquid infiltration. The toughening mechanism ofSiC nanowires was studied.…”

“…Fracture surface SEM images of the coating with the SiC nanowires content of 10 wt%. Reprinted with permission from Shangguan, et al99 …”