Patent ID: 9169552
Filing Date: 2015-10-27
Classification: C23C

Abstract:
1. A process for forming layers containing a ceramic or organoceramic material on the surface of a metal, semimetal or compounds thereof comprising a step of forming the layers containing a ceramic or organoceramic material on the surface of the metal, semimetal or compound thereof by a chemical deposition process conducted at a temperature less than 500° C. and a pressure no greater than atmospheric, wherein reactive chemical substances used for layer formation from the gas phase are formed from tetraethyl orthosilicate, acetic acid and water in a ratio of 1:1-5:1-5 as precursors by a catalyzed gas-phase reaction, the catalyzed gas phase reaction and the deposition process proceed in a fully backmixed common gas space, the deposition process is carried out in one operation, the reactive chemical substances and the precursors are homogeneously backmixed in the fully backmixed common gas space and the average residence time, as a ratio of volume of the gas space to gas throughput, is matched to a rate-determining step of the catalyzed gas-phase reaction to achieve a deposition rate of from 10 to 2,000 nm/hr, with the average residence time of process gas in the backmixed gas space being greater than two minutes.