The study on the preparation of ultra-low thermal expansion ceramic with high elastic modulus

Abstract The paper studied the synthesis of cordierite powders and preparation ultra-low thermal expansion ceramic with high elastic modulus. powder was synthesized by solid state reaction using MgO, Al 2 O 3 SiO as raw materials. effect temperature on purity, phase properties mainly studied. results show that higher purity reactivity at 1390°C, containing two kinds (α-cordierite β-cordierite). compact could be obtained 1420°C homogeneous organizations, besides, this sample had a wide operating area low expansion,