Investigation of HVOF thermal sprayed nanostructured WC-12Co mixed with Inconel-625 coatings for oil/gas applications

摘要

Different machine parts in oil and gas industries suffer from erosion-corrosion degradations due to the impact of small solid particles entraining a liquid stream during transportation. To overcome such a tribological problem, the demand for WC-12Co and Inconel-625 HVOF thermal spray coatings is becoming more and more stringent. To date, the development of nanostructured WC-12Co feedstock materials have significantly improved the mechanical property performance of such coatings over conventional micro-structured coatings. This paper identifies the recent developments of WC-12Co nanostructured coatings and how they have performed when deposited using different thermal spray techniques. The research focuses also on the modification of WC-12Co by the addition of Inconel-625 against erosion-corrosion. The results demonstrate that the significant improvement in nanostructured WC-12Co coating performance can be achieved by utilizing proper controlling parameters for HVOF technique.