The Effect of Electromechanical Treatment on Structure and Properties of Plasma-Sprayed Fe-30Cr Coating

摘要

This study investigates structure and properties of the plasma-sprayed coating from Fe-30Cr steel that was then finished using electromechanical treatment (EMT). As a consequence of the coating thus formed, surface microhardness under a 200gf load increased from 3.4 +/- 0.4 to 5.2 +/- 0.4GPa and number of pores in the coating structure reduced from 8.0 +/- 1.5 to 2.0 +/- 0.5%. The results of the microstructural studies showed fundamental changes of the plasma-sprayed coating treated by the EMT with the formation of nanostructured crystalline phases. The obtained results revealed the high potential of the EMT for post-treatment of plasma-sprayed coatings.