Accession Number:

AD0255511

Title:

THE KINETICS OF SRO ON MO BY FIELD ELECTRON MICROSCOPY

Descriptive Note:

Corporate Author:

NOTRE DAME UNIV IND

Personal Author(s):

Report Date:

1961-02-22

Pagination or Media Count:

1.0

Abstract:

The similarities in the SrO-W and SrO-Mo systems are 1 The spreading of SrO on Mo is apparently the same type as SrO on W, showing no boundaries 2 Above 1100 K, a pattern corresponding to the basic molybdate is obtained 3 Between 1135 and 1400K a stable state forms which may be identified as the normal molybdate 4 In going from the basic to the normal molybdate, the average work function passes through a minimumAND THERE IS AN INVERSION IN SYMMETRY OF THE 111 emission pattern and 5 Above 1400K, decomposition resulted in a relatively short period of time and patterns identifiable with oxygen on Mo were obtained. Some differences between the two systems are 1 Spreading of SrO on Mo occurs at temperatures approximately 200K higher than for SrO on W 2 The basic molybdate shows clusters on the 111 region These clusters persist until the work function minimum is passed in the basic to normal molybdate sequence 3 The inversion in symmetry of the 111 emission is not as rapid as in the SrO-W system A more pronounced symmetry change occurs in the 100 emission and 4 Apparently the normal molybdate is not stable for long periods of time above 1300K. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE