Accession Number : ADA135214

Title :   High Temperature Friction of Ceramic and Cermet Coatings.

Descriptive Note : Final technical rept. May 82-Jun 83,

Corporate Author : INSTITUT SUPERIEUR DES MATERIAUX ET DE LA CONSTRUCTION MECANIQUE SAINT-OUEN (FRANCE) LAB DE TRIBOLOGIE

Personal Author(s) : Azcarate,A ; Blouet,J ; Cretegny,J F ; Gras,R

PDF Url : ADA135214

Report Date : Jan 1983

Pagination or Media Count : 79

Abstract : The purpose of this study is the tribological analysis of coating materials containing basically ceramics and cermets, which can be sintered or sprayed. The materials studied were: -69% TiC + 31 % Ni - 80% Cr7C3 + 20% NiCr -25% WC + 5% Ni - 70% W/Cr - Cr 202 - Al203 - x% Cr203 + (100-x% Al203. The tests were conducted by means of two high temperature tribometers, one working in a vacuum, and the other in air. The contact pressure was 1 N/sq mm and the friction speed 5 m/mn. These conditions permitted us to disregard friction-induced temperature phenomena. During each test, the normal load, the tangential load and the temperature were continuously recorded. After each test, other measurements were made, according to the requirements of the study, by using methods such as: - density measurements; wear coefficient measurements (using profilometry methods); hardness and microhardness; micrography; roughness; X-Rays; microscan; electronic microscope.

Descriptors :   *Ceramic materials, *Cermets, *Coatings, *Tribology, High temperature, Friction, Oxides, Carbides, Physical properties

Subject Categories : Ceramics, Refractories and Glass
      Coatings, Colorants and Finishes
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE