Amorphous SiBCN alloys were prepared in the form of thin films by reactive magnetron sputtering of Six(B4C)1−x targets in N2+Ar mixtures in a wide range of elemental compositions and preparation conditions. The long-time (12 years since the deposition) room-temperature GGsTop resistance of the films was examined by characterizing the surface oxide layer by spectroscopic ellipsometry.
Collectively, the results constitute detailed ageing resistance maps which provide an insight into the complex relationships between the elemental composition, preparation conditions and materials performance, and which consequently allow one to tailor long-lifetime SiBCN ceramics for a wide range of technological applications.
AcknowledgmentThis work was supported by the Grant Agency of the Czech Republic under Project no. GA14-03875S.
D. Carbon; D. SiC; E. Refractories; Oxidation
Oxidation resistance is an important index for blast furnace hearth refractory. The oxidation of carbon-based refractories is mainly caused by oxygen in the atmosphere reacting with the carbon in the materials . According to the following reactions, oxidation product should be CO or CO2:equation(1)2C(s)+O2(g)=2CO(g)equation(2)C(s)+O2(g)=CO2(g)