Preparation and Thermal Cycling Resistance of SiBCN(O) Coating

Ze Long Feng; Zhi Min Guo; Biao Lu; Yue Zhang

doi:10.4028/www.scientific.net/KEM.602-603.393

Paper Titles

Properties and Processing of Porous Si₃N₄ Ceramics
p.375

Preparation and Properties of β-SiAlON-cBN Composites Using Y₂O₃, B₂O₃ and Al as Additives
p.380

Fabrication of Macroporous SiCN Ceramics from Mixed Polysilazanes
p.384

Studies on the Pyrolysis Kinetic Behaviours of Polycarbosilan
p.388

Preparation and Thermal Cycling Resistance of SiBCN(O) Coating
p.393

Synthesis and Characteristics of Porous Silicon Carbide Ceramic Reinforced by Silicon Carbide Whiskers
p.397

Preparation and Properties of In Situ Formed YAG Bonded Porous SiC Ceramics
p.403

Effect of Rare-Earth Oxides Additive on Liquid Phase Sintered SiC
p.407

Preparation and Characterization of SiC Coating on Graphite Substrate
p.412

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Preparation and Thermal Cycling Resistance of SiBCN(O) Coating

Abstract:

An oxidation protective coating of SiBCN(O) is prepared by slurry method, using polyborosilazane (PBSZ)-ethanol solution as the precursor. The dense and uniform coatings are obtained by pyrolysis and sintering at 1573K. The sintering temperature is significantly reduced and the densification is improved by introducing oxygen. The coating shows high oxidation protecting performance during the thermal shock between 1773K and room temperature for 10 cycles. The oxidation mechanism of the coating is studied and the results show that two stages are included: the relatively stable stage and the weight loss stage.