Abstract

Thermogravimetric analysis data were used to determine the activation energy E = 205.9 kJ/mol, the pre-exponential factor A = 2.275·10⁻¹⁵ m³/s, and the order of reaction with respect to the oxidizer \(m\) = 1 for the oxidation of an aluminum diboride particle involving the formation of aluminum borate on the surface. The ignition conditions for a single particle of aluminum diboride in air were evaluated using the theory of ignition of metal particles by the thermal explosion mechanism. It is shown that the formation of aluminum borates in the induction period results in a strong positive dependence of the particle ignition temperature on the particle size and oxygen partial pressure of.

中文翻译：

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硼酸铝氧化膜对单个二硼化铝颗粒点火条件影响的计算和理论分析

摘要

热重分析数据用于确定活化能E  = 205.9 kJ/mol，指前因子A  = 2.275·10 ^-15  m ³ /s，以及相对于氧化剂的反应顺序\(m\)  = 1 氧化二硼化铝颗粒，包括在表面形成硼酸铝。空气中二硼化铝单个粒子的着火条件是利用金属粒子的热爆炸机理点火理论来评估的。结果表明，诱导期硼酸铝的形成导致粒子着火温度对粒子大小和氧分压有很强的正相关性。