Abstract
Chromium coatings with and without Al2O3 or Y2O3 particles were prepared by chromizing the as-deposited Ni-film with and without Al2O3 or Y2O3 particles using a conventional pack-cementation method at 800 °C. The cyclic oxidation at 800 °C and hot corrosion in molten 75% Na2SO4+25% NaCl at 800 °C of the three different chromizing coatings were investigated. The effects of Al2O3 or Y2O3 on the cyclic oxidation and hot corrosion behavior of the chromizing coatings were discussed. Microstructure results show that the codeposited Al2O3 or Y2O3 particles significantly retard the grain growth of the chromizing coating, which increases the cyclic oxidation and hot corrosion resistance of the chromizing coatings, due to the more rapid formation of purer and denser chromia scale.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Transactions of Nonferrous Metals Society of China
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
