材料期刊网

The crystallization of amorphous SiO(2) with different forms of H(2)O under high pressure and high temperature was investigated experimentally, and it was first discovered that Si-OH could effectively promote the synthesis of coesite at lower temperature in a very short time. Using amorphous SiO(2) with Si-OH as the initial material, single-phase coesite has been synthesized under 4.2 GPa and 190 degrees C for 30 min. (C) 2008 Elsevier B.V. All rights reserved.