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Correlation between tribological properties of powder coatings and electrocontact sintering process parameters

Kovtun V. A., Pleskachevsky Yu. M., Dmitriev V. V., Zhirnov E. A., Shalobalov O. M.

Applied Mechanics and Engineering

1999

Vol. 4, no spec.

291-296

Investigation has been carried out in the effect of technological factors of electrocontact sintering (force of electrode pressing, velocity of material motion, strength of sintering current, etc.) on the structure and triboengineering characteristics of thin-film 50-100 mm thick coatings from copper-graphite systems. A multiple-factor experiment has been undertaken to optimize regimes for coating formation with 1-4% porosity and to range parameters of technological process by degree of their action on the coating performances. The calculated optimum parameters of electrocontact sintering ensured most perfect characteristics of thin-film copper-graphite coatings. Most essential parameters proved to be strength of sintering current and force of electrode pressing.