Silicon-containing steel compostition with improved heat exchanger corrosion and fouling resistance

US8470097B2 · kind B2 · utility

Assignee

• EXXONMOBIL RESEARCH AND ENGINEERING COMPANY · US

Inventors

• ChangMin Chun · Madison, US
• Mark A. Greaney · Upper Black Eddy, US
• Thomas Bruno · Raritan, US
• Ian A. Cody · Baton Rouge, US
• Trikur A. Ramanarayanan · Somerville, US
• LeRoy Clavenna · Baton Rouge, US

Key dates

• Filing date: May 15, 2012
• Grant date: Jun 25, 2013
• Expiry date: May 15, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/1259
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of providing sulfidation corrosion resistance and corrosion induced fouling resistance to a heat transfer component surface includes providing a silicon containing steel composition including an alloy and a Si-partitioned non-metallic film formed on a surface of the alloy. The alloy is formed from the composition η, θ,and τ, in which η is a metal selected from the group consisting of Fe, Ni, Co, and mixtures thereof, θ is Si, and τ is at least one alloying element selected from the group consisting of Cr, Al, Mn, Ti, Zr, Hf, V, Nb, Ta, Mo, W, Sc, La, Y, Ce, Ru, Rh, Ir, Pd, Pt, Cu, Ag, Au, Ga, Ge, As, In, Sn, Sb, Pb, B, C, N, P, O, S and mixtures thereof. The Si-partitioned non-metallic film comprises at least one of sulfide, oxysulfide and mixtures thereof.