... of the nitrided cylinder of oil-well sucker-rod pump, save on the surface layer of a high-corrosion properties. The paper presents a methodof improving the corrosion resistance of the working surface of the cylinders of oil-wellsucker-rod pump by ion-nitriding vacuum to form a nitride zone. Materials and methods Vacuum ion nitriding, the depth distributionof the microhardness of the nitrided layer, the phase composition of the nitrided layer, X-ray structural analysis of the nitrided layer. Results ...

... reached. 1. Expansion of technological opportunities of ionic processes and achievement of a qualitative structurally-power condition of the strengthened surfaces. 2. The maximal increase in mobility and getting ability of plasma that has provided nitriding of complex contour details with various apertures and narrow grooves. 3. Exception of formation of microarches, local concentration of energy and, accordingly, an overheat sharp edges and corners of details. 5. Increase of density of stacking ...

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