Thermal Oxidation of Nanosized Tantalum Diboride

期刊论文
发表日期：

2024年2月1日

查看全文

A. A. Vinokurov,
N. N. Dremova,
G. V. Kalinnikov,
S. E. Nadkhina,
S. P. Shilkin

摘要

Abstract

We investigated the morphology and phase composition of tantalum diboride (TaB₂) oxidation products by oxygen in the air across a temperature range of 20 to 1000°C. At isothermal conditions of 450, 500, 550, and 600°C, we determined the oxidation rate constants for TaB₂ nanoparticles with an average particle diameter of ~70 nm (0.0006, 0.0027, 0.009, and 0.015 s^–1, respectively). The apparent activation energy for the oxidation reaction of TaB₂ nanoparticles, derived from the temperature dependence of the rate constants, was estimated to be 115 ± 6 kJ/mol.