High temperature corrosion by hydrogen fluoride (HF) is a problem in a number of industries, such as fluoropolymer and aluminum production, and in the destruction of chemical waste. Hydrogen fluodde is extremely
corrosive and its toxic nature makes it imperative that it be safely
contained. There are relatively few data available to guide the ,selection of materials for processes that run at elevated temperature in the presence of HF. To remedy this laboratory data were generated in environments containing HF at 1000°C. Tests were conducted on alloys, interrnetallics, ceramics and graphite. Corrosion mechanisms were elucidated and suitable materials for use in HF-containing environments were identified.
Keywords: High temperature; corrosion; hydrogen fluoride; nickel-base alloys; cobalt-base alloys; interrnetallics; graphite; ceramics.