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Parameters of vacuum titanizing process as the factors changing growth kinetics of diffusion layers on steel surface.

100%

Kasprzycka E.

tom R. XIX, nr 4

1015-1018

Layers produced on carbon steel (0.90%C) during vacuum titanizing have been investigated. In particular, the influence of the pressure in furnance chamber is discussed. Titanium carbide layers have been obtained. Titanizing conducted at low pressure with a static rather than a dynamic vacuum during the holding period was found to be the most effective for maximizing the rate of growth of diffusion layers. It has been shown that the growth of titanized layers is controlled by the diffusion in the steel.

Formation and properties of borided layers obtained using the glow discharge conditions on nickel thermally sprayed substrate.

86%

Sobiecki J. R. , Sawicki R.

tom R. XIX, nr 4

1081-1084

The present paper describes the conditions of plasma boriding thermally sprayed nickel coatings. The results of metallographic, phase composition investigations, scanning electron microscopy, electron probe microanalysis, wear and corrosion resistances are compared. The combination of two different methods of producing surface layers has given possibilities of obtaining unique layers of good wear and corrosion resistances.