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 fluoride 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, intermetallics, ceramics and graphite. Corrosion mechanisms were elucidated and suitable materials for use in HF-containing environments were identified.

Subject
Vapor pressure, Materials, Fluorides, Corrosion rate, Metal surfaces, Nickel based alloys, Chromium, Melting point, Graphite, Metals, Ceramics, Corrosion resistance, Nickel
Keywords:
High temperature, corrosion, hydrogen fluoride, nickel-base alloys, cobalt-base alloys, intermetallics, graphite, ceramics
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2000
Association for Materials Protection and Performance (AMPP)
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