Surface damage of molybdenum and TZM alloy under D/sup +/ impact
The surface damage of polycrystalline molybdenum and TZM alloy under 40-, 60-, and 120-keV D/sup +/ impact has been investigated for irradiation in both pulsed and continuous mode for total doses varying from 1.7 x 10/sup 17/ to 2.2 x 10/sup 19/ ions/cm/sup 2/ and for target temperatures verying from ambient temperature to 400/sup 0/C. Analysis by scanning electron microscopy of the MO samples held at ambient temperatures during D/sup +/ irradiations in both pulsed and continuous modes revealed surface damage due to blistering for the 40-keV and 60-keV irradiations for doses ranging from 8.7 x 10/sup 17/ to 8.1 x 10/sup 18/ ions/cm/sup 2/, but no detectable damage for the 120-keV D/sup +/ irradiations for doses ranging from 4.3 x 10/sup 18/ to 2.2 x 10/sup 19/ ions/cm/sup 2/. This observed difference in the blistering behavior is attributed to the differences in the ambient target temperature for the 120-keV irradiation and both the 40- and 60-keV irradiations. For irradiations at temperatures above 300/sup 0/C, no blisters could be detected for any of the three energies. For similar irradiation conditions, TZM-alloy showed a reduction in blistering as compared to molybdenum.
- Research Organization:
- Argonne National Lab., Ill. (USA)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 5132402
- Report Number(s):
- CONF-771110-11
- Country of Publication:
- United States
- Language:
- English
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ALLOY-TZM
ALLOYS
CHARGED PARTICLES
DEUTERIUM IONS
ELECTRON MICROSCOPY
ELEMENTS
ENERGY RANGE
HIGH TEMPERATURE
IONS
IRRADIATION
KEV RANGE
KEV RANGE 10-100
KEV RANGE 100-1000
MEDIUM TEMPERATURE
METALS
MICROSCOPY
MOLYBDENUM
MOLYBDENUM ALLOYS
MOLYBDENUM BASE ALLOYS
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
REFRACTORY METALS
SURFACES
SWELLING
TEMPERATURE DEPENDENCE
TITANIUM ALLOYS
TRANSITION ELEMENTS
ZIRCONIUM ALLOYS