THE COMPATIBILITY OF WELDED STRUCTURAL MATERIALS WITH CHLORINE TRIFLUORIDE, PERCHLORYL FLUORIDE AND A MIXTURE OF THESE.
Technical summary rept., Apr 62-Jan 64,
PENNSALT CHEMICALS CORP PHILADELPHIA PA
Pagination or Media Count:
Compatibility and corrosion rates of nine welded alloys of aluminum, nickel and stainless steel, stressed and unstressed, in ClF3, ClO3F and 25 ClO3F-75 ClF3 at 30 and 66 C were investigated. Corrosion rates at 30 C were all less than 0.1 milyr. At 66 C, corrosion in ClF3 and Halox 25 was less than 0.1 milyr except for Type 410 S.S. 1-2.2 milyr. In ClO3F at 66 C corrosion was normally below 0.5 milyr, but with moisture present, rates up to 8.3 milyr were observed. No change in mechanical properties and no stress cracking due to oxidizer corrosion occurred. There was no interface corrosion. In an ambient temperature, high-pressure loop, liquid flows of ClF3 and ClO3F at 100 ftsec through orfices in aluminum, nickel and stainless steel caused no erosion. A Teflon orifice was attacked by ClF3. Liquid impingement jets of ClF3 and ClO3F at 100 ftsec had no effect on these metals except for a slight pit in aluminum 2014-T6 with ClF3. Liquid cavitation of ClF3 and ClO3F in an aluminum tube caused no metal change. Author
- Properties of Metals and Alloys