Open AccessCOLD-SPRAYED Al-COMPOSITE COATINGS ON S135 DRILL-PIPE STEEL
Author(s) -
Da Lv,
Kai Yang
Publication year - 2021
Publication title -
materiali in tehnologije
Language(s) - English
Resource type - Journals
eISSN - 1580-3414
pISSN - 1580-2949
DOI - 10.17222/mit.2020.089
Subject(s) - materials science , coating , porosity , composite number , microstructure , corrosion , metallurgy , composite material , conversion coating
Nine kinds of Al-composite coatings were cold sprayed on the S135 steel. The mechanical properties and microstructures of the coatings were analyzed and the corrosion behavior of the coatings was studied. The surface morphology of the coatings was observed. The porosity of the nine coatings was less than 1.52 %. A proper increase in the Zn powder could reduce the porosity. The thickness of a coating could be increased with an increase in Al2O3 and Zn. The hardness of a coating increased obviously after adding Al2O3. The friction coefficient of a coating decreased with the increase in Zn and Al2O3. The corrosion rate of the coatings decreased with an increase in Al and Al2O3.