engleski

Particle erosion of ceramic coating on aluminium foam

Aluminium foam is, principally, a composite material consisting of aluminium or aluminium alloy matrix and of pores filled up with a gas distributed throughout the matrix. This unique structure possesses an unusual combination of properties, such as low thermal conductivity, high impact energy absorption capacity, very high specific toughness and good acoustic properties. One of the disadvantages of aluminium foam is low wear resistance. Particle erosion is wear loss from surface of solid body because of relative motion of fluid with solid particles. In this paper, samples of aluminium foams with different porosity were thermal sprayed with two different ceramic coating (on the basis of Al2O3 and ZrO2) and eroded with SiO2 particles. Test results were presented in loss of mass after the testing and compared with erosion resistance of thermal sprayed coating on the basis of molybdenum.

particle erosion; aluminium foam; ceramic coating

nije evidentirano