Accession Number : AD0717031

Title :   Deposition of a Protective Coating from the Gas Phase on the Surface of Solid Bodies,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Klevtsur,S. A. ; Belousov,M. M.

Report Date : 04 SEP 1970

Pagination or Media Count : 7

Abstract : The process of depositing protective carbide, nitride, boride, and pyrocarbon coatings from the gas phase, represents a case of a complex, gaseous heterogeneous-catalytic reaction. To understand the mechanism of the reaction, the speed of the surface deposition process, depending on the temperature and concentration of the chemical element forming a protective coating, must be determined. The authors derive equations for determining the speed of deposition of a protective coating from a jet of the reactive gas mixture on the walls of channels in an arbitrary body. It is assumed that the reaction proceeds on the wall surface and that the gas phase is the reservoir controlling the concentration of components on the surface. The speed of deposition of the protective coating relative to the change in concentration and temperature is considered per unit of length. (Author)

Descriptors :   (*REFRACTORY COATINGS, *VAPOR PLATING), DEPOSITION, REACTION KINETICS, SURFACES, USSR

Subject Categories : Physical Chemistry
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE