Oxidation behavior of additively manufactured ZrB₂–SiC in air and in CO₂ is reported in the temperature range of 700–1000 °C. Observed scale morphologies in air and in CO₂ were similar, featuring an outer borosilicate layer and an inner porous zirconia layer containing partially oxidized silicon carbide particles and remnant borosilicate products. Oxide scale thicknesses and parabolic scaling constants in air were approximately twice those observed in CO₂ across all studied temperatures. Activation energies for oxidation of 140 ± 20 kJ/mol in air and 110 ± 20 kJ/mol in CO₂ were determined, indicating similar diffusion processes that appear to be rate-limiting. The formation of protective scales across wide temperature ranges both in air and in CO₂ makes additively manufactured ZrB₂–SiC an attractive candidate for high-temperature industrial process applications featuring varied oxidants such as heat exchangers.

据报道，增材制造的 ZrB ₂ –SiC 在空气和 CO ₂中的氧化行为在 700–1000 °C 的温度范围内。在空气和CO ₂中观察到的垢形态相似，具有外部硼硅酸盐层和内部多孔氧化锆层，其中含有部分氧化的碳化硅颗粒和残余硼硅酸盐产物。在所有研究温度下，空气中的氧化皮厚度和抛物线标度常数大约是 CO ₂中观察到的氧化皮厚度和抛物线标度常数的两倍。测定空气中的氧化活化能为140 ± 20 kJ/mol，CO ₂中的氧化活化能为110 ± 20 kJ/mol ，表明类似的扩散过程似乎是限速的。在空气和 CO ₂中在宽温度范围内形成保护垢，使得增材制造的 ZrB ₂ –SiC 成为具有各种氧化剂（例如热交换器）的高温工业过程应用的有吸引力的候选者。