Patent ID: 6063435
Filing Date: 2000-05-16
Classification: C23C,F01D,Y02T

Abstract:
In a process for vapor-depositing zirconium dioxide, optionally doped with rare-earth metal oxides or mixtures of such oxides, on a ceramic or metallic substrate, the improvement wherein the substrate is subjected to temperatures ranging from 873 K to 1823 K and is rotated at a rotational speed ranging from 1 to 300 rpm, and wherein the substrate is coated with zirconium dioxide during a nucleation phase, and is subsequently coated with additional zirconium dioxide during a coating phase, the coating phase comprising:rotating the substrate at a temperature and rotational speed wherein the temperature of the substrate and rotational speed of the substrate, are within a range defined by the equations: ##EQU3## to manipulate deposit characteristics, where T represents the substrate temperature in K, and .omega. represents the rotational speed of the substrate in rpm, wherein the rotational speed is varied continuously or discontinuously, or alternatively in alternating senses of rotation, and the rotational speed during the coating phase is faster than the rotational speed during the nucleation phase.