Investigation of HVOF thermal sprayed （调查HVOF喷涂热喷涂）.pdfVIP

Surface Effects and Contact Mechanics XI 215 Investigation of HVOF thermal sprayed nanostructured WC-12Co mixed with Inconel-625 coatings for oil/gas applications 1 2 3 4 A. Al-Hamed , H. Y. Al-Fadhli , S. Al-Mutairi , B. S. Yilbas , 1 1 M. S. J. Hashmi J. Stokes 1National Centre for Plasma Science and Technology, School of Mechanical and Manufacturing Engineering, Dublin City University, Ireland 2Non-Metallic and Protective Coating Unit, Consulting Services Department, Saudi Aramco Dhahran, Saudi Arabia 3Research and Development Centre Unit, Saudi Aramco Dhahran, Saudi Arabia 4Mechanical Engineering Department, King Fahd University of Petroleum and Minerals, Saudi Arabia Abstract 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. Keywords: