Corrosion of high-alloy materials in aqueous hydrofluoric acid environments

Journal Article · Thu Dec 01 04:00:00 EST 1994 · Corrosion (Houston); (United States)

DOI:https://doi.org/10.5006/1.3293488· OSTI ID:6652411

Pawel, S J ^[1]

---

1. Oak Ridge Y-12 Plant, TN (United States). Development Div.

A series of immersion tests for eight high-alloy materials was performed in a variety of hydrofluoric acid (HF) environments. Solution strengths of 0.05%, 1%, 10%, 24%, and 48% HF were examined at 24 C, 50 C, and 76 C. Coupons of each alloy were exposed fully immersed in solution and partially exposed in the aerated vapor above each solution. In addition, a limited number of U-bend tests were performed to examine susceptibility to stress corrosion cracking. Comparison of alloy performance (corrosion rate calculated from weight loss, metallographic evaluation of attack) indicated alloys C-22 (UNS N06022) and C-276 (UNS N10276) exhibited overall superior performance. Other alloys showed useful resistance for a limited range of conditions.

• OSTI ID: 6652411
• Journal Information: Corrosion (Houston); (United States), Journal Name: Corrosion (Houston); (United States) Vol. 50:12; ISSN 0010-9312; ISSN CORRAK
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ALLOY-FE46NI33CR21
ALLOY-NI43FE30CR22MO3
ALLOY-NI76CR15FE8
ALLOYS
ALUMINIUM ADDITIONS
ALUMINIUM ALLOYS
AUSTENITIC STEELS
CHEMICAL REACTIONS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-MOLYBDENUM STEELS
CHROMIUM-NICKEL STEELS
CHROMIUM-NICKEL-MOLYBDENUM STEELS
COBALT ALLOYS
COPPER ALLOYS
CORROSION
CORROSION RESISTANCE
CORROSION RESISTANT ALLOYS
CORROSIVE EFFECTS
FLUORINE COMPOUNDS
HALOGEN COMPOUNDS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
HYDROFLUORIC ACID
HYDROGEN COMPOUNDS
INCOLOY 800
INCOLOY 825
INCOLOY ALLOYS
INCONEL 600
INCONEL ALLOYS
INORGANIC ACIDS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MATERIALS TESTING
METALLOGRAPHY
MOLYBDENUM ALLOYS
NICKEL
NICKEL ALLOY
NICKEL ALLOYS
NICKEL BASE ALLOYS
NICKEL STEELS
NICKEL-CHROMIUM STEELS
NIMONIC
STAINLESS STEEL-316L
STAINLESS STEELS
STEEL-CR17NI12MO3-L
STEELS
TESTING
TITANIU
TITANIUM ADDITIONS
TITANIUM ALLOYS
TUNGSTEN ALLOYS