Preferential Orientation and Mechanical Properties of Hot-Pressed Micacontaining Glass-Ceramics

A new type of mica-containing glass-ceramics with preferentially orientated microtructurewas successfully fabricated by hot-pressing the material after the crystallization process. The fibertexture {00l} uvw was identified in the material by means of X-ray diffraction analysis(XRD).The space orientation distribution function of grains was determined as f(θ) = 1 - Aexp~(-B/θ). Asthe deformation amount of hot- press increases, the prefercutial orientation degree increases to acertain value and then keeps constant- However, the flexural strength and fracture toughness ofthe material continuously increases with the increase in the deformation amount of hot-pressing.