Abstract The oxidation kinetics of β-SiAlON with different particle sizes, synthesized using bauxite, Si and Al powders at 1773 K in flowing N2, were investigated. The kinetic feature of β-SiAlON particles varied little with particle size, and the oxidation curves were parabolic due to a glass film formed on the β-SiAlON particle surface. Small β-SiAlON particles had larger surface areas and lower activation energies than the large particles and were easily oxidized at the initial stage because of the increased probability of contact with O2.

中文翻译：

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不同粒径铝土基β-SiAlON氧化动力学

摘要 研究了使用铝土矿、Si 和 Al 粉末合成的不同粒径的 β-SiAlON 在 1773 K 下在流动 N2 中的氧化动力学。β-SiAlON 颗粒的动力学特征随粒径变化很小，由于在 β-SiAlON 颗粒表面形成玻璃膜，氧化曲线呈抛物线状。小 β-SiAlON 颗粒比大颗粒具有更大的表面积和更低的活化能，并且由于与 O2 接触的可能性增加，在初始阶段很容易被氧化。