Oxidation characteristic of boron phosphide ceramics

Abstract

Oxidation behavior of boron phosphide (B₁₃P₂) ceramics under the high-temperature conditions was studied. The powder of B₁₃P₂ was baked at 773K to 1273K for 2h, 5h, 25h and 50h. The weight gain of B₁₃P was measured as a function of temperature and time. Thermal gravimetric-differential thermal analysis (TG-DTA) was used to measure the weight changes of B₁₃P₂ as a function of annealing temperature. TG-DTA plots indicated that B₁₃P₂ began to be oxidized at 1050K. Moreover, every baked B₁₃P₂ was analyzed by X-ray diffraction analysis. The result of X-ray diffraction analysis showed that B₁₃P₂ changed to be amorphous at 1127K.