Kinetic Analysis of the Heat Resistance of ZrB2-SiC Composites

Abstract

The heat resistance and phase composition of ZrB 2 -SiC and ZrB 2 -SiC-SiO 2 sol materials heat treated at temperatures up to 1400 ° C in air are investigated. The kinetic analysis of the oxidation process is performed, and the possible mechanisms of the formation of an oxide layer are proposed.

Oxidation behavior and kinetics of ZrB2 containing SiC chopped fibers

“…The TG curves follow similar trends to those outlined by previous works on ZrB 2 -SiC ceramics with SiC in form of particles [19,[34][35][36] and a sketch of the occurring events is presented in Fig. 2c.…”

Oxidation processes in a silicon-boron-zirconium boride composite in the temperature range 1000–1300°C

“…For example, earlier we obtained coatings based on boron and silicon containing compounds [11][12][13][14]. The present work is a continuation of these studies.…”

UHTC‐Based Hot Structures

“…In fact the oxidation of pure ZrB 2 above 1200°C produces B 2 O 3 which, being characterized by intensive volatility, is not able to form a stable and protective oxide scale [22][23][24][25][26][27][28]. The addition of SiC enhances resistance to the oxidation of diborides-based monolithic ceramics up to 1600°C through the formation of borosilicate glass [18,[24][25][26][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”