Formation of structure, phase composition and properties of electro explosion resistant coatings using electron-beam processing

Abstract

For the first time, the high intensity electron beam modification of electroexplosion composite coatings of Mo<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>Cu, Mo<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>C<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>Cu, W<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>Cu, W<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>C<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>Cu and TiB2<private-char description='Single_Bond' name='Single_Bond' value='Single_Bond'/>Cu systems was done. The studies of phase and elemental composition, defective structure conditions of these coatings were carried out. The regimes of electron-beam processing making possible to form the dense, specular luster surface layers having a submicrocrystalline structure were revealed. It was established that electron-beam processing of elecroexplosion spraying of layer of elecroexplosion spraying carried out in the regime of melting results in the formation of structurally and contrationally homogeneous surface layer. Investigation of the effect of electron-beam processing of electroexplosion electroerosion resistant coatings on their tribological properties (wear resistanse and coefficient of friction) and electroerosion resistance was done. It was shown that all the examined costings demonstrate the increase of electroerosion resistance in spark erosion up to 10 times.