Crystallization Behavior of Heat-Treated Basalt Fiber

摘要

Crystallization of the basalt fibers can reduce their mechanical property. This paper is devoted to understand the crystallization behavior of basalt fiber and its control conditions. Basalt fibers were heated at 700, 750, 800, 900, 1000, 1050 °C for 2h, then cooled down to room temperature in air. The crystallization behavior of basalt fiber was investigated by means of differential thermal analysis (DTA), X-ray powder diffraction (XRD) and Fourier transform infrared spectrometry (FTIR). The results indicate that diopside and anorthite phases appeared during crystallization process and the absorption bands of heat-treated samples in FTIR spectra split and become relatively sharp.