The preparation of diamond films on new composite ceramic substrates of diamond and alumina

摘要

This paper reports the preparation and properties of diamond firms deposited on new composite ceramic substrates of diamond and alumina. The influences of the substrates to the properties of diamond films were discussed. The Raman spectra and SEM show that the substrates which prepared by hot pressing sintering were more suitable to deposit high quality diamond films. The main reason why diamond firms deposited on composite ceramic substrates without any pre-treatment have good qualities and why the composite ceramic substrate is appropriated to deposit large area diamond films are studied.