Helium blistering of ceramic coatings on Hastelloy X and Nb--1% Zr

Conference · Wed Jan 01 04:00:00 EST 1975

OSTI ID:4162461

Kaminsky, M; Das, S K; Ekern, R

The surface damage of insulating ceramic coatings on Hastelloy X and Nb-- 1 percent Zr held at room temperature and at 300$sup 0$C was studied for both 100 keV and 250 keV helium ion irradiation for a dose range from 3.7 x 10$sup 18$ to 1 x 10$sup 19$ ions cm$sup -2$. Blisters were observed after room temperature irradiation with both 100 keV and 250 keV helium ions. However, for irradiation at 300$sup 0$C no blisters could be observed. The sharp rise in the helium permeation with temperature, observed by others for some glasses and ceramics, is thought to be responsible for this behavior. These results suggest that for the energy range studied helium blistering has a negligible surface erosion effect on such coatings if they are operated at temperatures above 300$sup 0$C. (auth)

• Research Organization: Argonne National Lab., Ill. (USA)
• DOE Contract Number: W-31109-ENG-38
• NSA Number: NSA-33-007087
• OSTI ID: 4162461
• Report Number(s): CONF-751101--57
• Country of Publication: United States
• Language: English

Related Subjects

*THERMONUCLEAR REACTOR WALLS-- COATINGS
700209* --Fusion Energy--Fusion Power Plant Technology-- Component Development & Materials Testing
HASTELLOY X
HELIUM IONS
ION IMPLANTATION
KEV RANGE 100-1000
N70800* --Physics--Controlled Thermonuclear Research-- Thermonuclear Engineering & Equipment
SWELLING
VOIDS NIOBIUM ALLOYS-- ZIRCONIUM ALLOYS