Abstract:This study evaluates candidate coatings for potential use in the manufacture of metal-seated ball valves for hydrometallurgy service. All coatings were deposited on grit-blasted titanium coupons by air plasma spraying to a nominal layer thickness of 500 µm. The feedstock powders used were selected based on literature review and field experience and include Cr2O3, TiO2-Cr2O3, nano TiO2, and a novel mixture of nano TiO2 and conventional Cr2O3. The resulting coatings are compared based on microhardness, shear str… Show more
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