PLASMA SYNTHESIS IN THE TECHNOLOGY OF GASOTHERMIC SPRAYING

Plasma spraying combined with chemical transformations is a method for the synthesis of new materials. A new class of coatings can be formed with its use, into whose composition enter fine particles of nitrides , carbides, or oxides synthesized in the plasma. A thermodynamic analy sis of the formation of aluminum, silicon, and titanium nitrides is gi ven. The defining role of kinetic factors in obtaining the desired pro ducts is explained, The extent of transformation depends on the degree of evaporation of the sprayed powder. Experimental data confirm the v alidity of the theoretical assumptions.