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Title: PIT INITIATION IN AlO{sub X}/Al THIN FILMS

Conference ·
OSTI ID:758980

The electrochemical responses of AlO{sub x}/Al thin films have been investigated as a function of film growth conditions which produce films with different grain orientation, size and morphology. Films with smooth, 150 nm diameter, randomly oriented grains show a higher pitting potential and lower passive current than those films with large grain-boundary grooving from a mixture of smooth micron-sized, (200)-oriented grains and 300--500 nm diameter, (220)-oriented grains. These results suggest that surface roughness from grain-boundary grooving affects the pitting resistance more strongly than does the grain boundary density.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
AC02-98CH10886
OSTI ID:
758980
Report Number(s):
BNL-66100; KC020102; R&D Project: AS010MSD; KC020102; TRN: AH200034%%305
Resource Relation:
Conference: CRITICAL FACTORS IN LOCALIZED CORROSION III, 194TH ELECTROCHEMICAL SOCIETY MEETING, BOSTON, MA (US), 11/01/1998--11/06/1998; Other Information: A SYMPOSIUM IN HONOR OF THE 70TH BIRTHDAY OF JEROME KRUGER; PBD: 1 Nov 1998
Country of Publication:
United States
Language:
English