Effect of additions of TiC and Re on high temperature corrosion performance of cold sprayed Ni–20Cr coatings》.pdfVIP

Surface Coatings Technology 280 (2015) 50–63 Contents lists available at ScienceDirect Surface Coatings Technology j ournal homepage : www.el /l oc ate/ surfcoat Effect of additions of TiC and Re on high temperature corrosion performance of cold sprayed Ni–20Cr coatings Harpreet Singh a, Niraj Bala b,⁎, Narinder Kaur c, Sanjeev K. Sharma c, Deuk Young Kim c, Satya Prakash d a School of Mechanical, Materials Energy Engineering, Indian Institute of Technology Ropar, Rupnagar, Punjab, India b Mechanical Engineering Department, Baba Banda Singh Bahadur Engineering College, Fatehgarh Sahib, Punjab, India c Semiconductor Materials and Device Laboratory, Department of Semiconductor Science, Dongguk University-Seoul, Seoul 100715, Republic of Korea d Metallurgical and Materials Engineering Department, Indian Institute of Technology, Roorkee, Uttrakhand, India a r t i c l e i n f o a b s t r a c t Article history: Thermal spray coatings have been widely used to combat corrosion and erosion–corrosion problems in power Received 1 December 2014 plant boilers. In the present work, commercially available Ni–20Cr powder, Ni–20Cr blended with TiC powder Revised 31 July 2015 and Ni–20Cr blended with TiC and Re powder were successfully deposited on a boiler steel (SAE 213-T22) by Accepted in revised form 1 August 2015 the cold spraying technique. The uncoated and coated specimens were subjected to a molten salt environment Available online 4 August 2015 of Na SO –60 wt.%V O at 900 °C under cyclic conditions. Mass change wa