Book Description

Studies were made to determine the compatibility and resistance to corrosion of various metals with liquid Fl at -320F. Metals tested included various alloys of Al, stainless and highstrength steel, Ti, Cu, Monel, Ni, and Mg. It was found that the total corrosion of Ti which had been exposed to liquid Fl was independent of time for perio tamination, Mechanical properties, Handling, Alloys, Metals, *Corrosive liquids, Corrosive gases. Studies were made to determine the compatibility and resistance to corrosion of various metals with liquid Fl at -320F. Metals tested included various alloys of Al, stainless and highstrength steel, Ti, Cu, Monel, Ni, and Mg. It was found that the total corrosion of Ti which had been exposed to liquid Fl was independent of time for periods up to 2 weeks. The corrosion of mg increased up to one day, but longer exposures up to 2 weeks produced no further corrosion. Increased corrosion of metals by Fl contaminated with water does not occur at liquid Fl temperatures, but takes place in the gas phase while the system is warming. Fl which had been liquefied in glass cells was found to contain solid material. Pretreatment with Fl gas is recommended since it can burn off surface contaminationhich might prove dangerous during liquid exposure. Abrading metal surfaces under liquid Fl with wire bristles caused no apparent increase in corrosion rate. (Author).