CREATION OF COMPOSITE ELECTRICALLY CONDUCTIVE COATINGS BY GAS DYNAMIC SPRAYING

The article presents the results of research spraying processes composite electrically conductive coatings using copper C01-11 and aluminum A20-11 powders in order to determine effect components on each other formation cold gas-dynamic (CGDS) development recommendations for introduction additional component obtain a coating with given ratio different components. For example, when at working air temperature 300 ° C sputtering coefficient is almost zero, it search experimental dependence change depending percentage sprayed mixture determination their residual content coating. based obtained data coefficients aluminum. CGDS method blanks from mixtures initial concentrations by weight (from 0 100% step 10%) under otherwise equal conditions (air pressure 0,6 MPa, heating C). were found. Data individual allows composition source powder required dependences mass When concentration less than 66%, deposition greater Both increase increasing until reaches 61%. At high (more 66%) spray copper, coincide. allow you select desired maximum (~ 95%) can be adding 30-40% starting powder. prove influence justify amount an containing that difficult spray.