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1. OBTAINING OF CALCIUM-PHOSPHATE COATINGS ON THE TITANIUM SURFACE BY MICRO-ARC OXIDATION
2. Morphological Changes in the Dislocation Structure of Structural Steel 20GL after Electrolytic-Plasma Hardening of the Surface
3. EFFECT OF THE STRUCTURE FORMED AFTER BULK AND SURFACE HARDENING ON THE HARDNESS AND WEAR RESISTANCE OF 20Cr2Ni4A STEEL
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