Accession Number : ADP005080

Title :   REC and NdFe Magnetic Moment Irreversibility form Temperature Cycling,

Corporate Author : CALIFORNIA UNIV BERKELEY LAWRENCE BERKELEY LAB

Personal Author(s) : Hoyer,E. ; Chin,J. W. ; Shuman,D.

Report Date : OCT 1985

Pagination or Media Count : 7

Abstract : Presented are the results of thermal cycling tests carried out on REC and NdFe and NdFe samples, to determine the irreversible losses in room temperature open circuit magnetic moment. A stabilization prescription was developed for a REC alloy that will allow two 4 day/175 C temperature cycles, which simulate two UHV bakeouts, with only a 0.35% average loss and a 0.65% loss variation in the room temperature open circuit magnetic moment after stabilization.

Descriptors :   *PARTICLE ACCELERATOR COMPONENTS, *PERMANENT MAGNETS, MAGNETIC MOMENTS, HYSTERESIS, LOW LOSS, RARE EARTH ALLOYS, COBALT ALLOYS, IRON ALLOYS, NEODYMIUM ALLOYS, THERMAL CYCLING TESTS, ULTRAHIGH VACUUM, ROOM TEMPERATURE, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE