Surface on a stainless steel matrix
AssigneeNOVA Chemicals (International) S.A.
InventorsLeslie Wilfred Benum, Michael C. Oballa, Sabino Steven Anthony Petrone, Weixing Chen
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Abstract
An outermost surface covering not less than 55% of stainless steel, said surface having a thickness from 0.1 to 15 microns and being a spinel of the formula MnxCr3-xO4 wherein x is from 0.5 to 2 is not prone to coking and is suitable for hydrocarbyl reactions such as furnace tubes for cracking.
Claims19
An outermost surface covering not less than 55% of stainless steel comprising from 20 to 50 weight % of Ni, said surface having a resistance to coke formation when the stainless steel is exposed to a hydrocarbon environment at high temperatures and having a thickness from 0.1 to 10 microns and substantially comprising a spinel of the formula MnxCr2O4.
Dependencies are inferred from the claim text.