skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Development of electrically insulating coatings for service in a lithium environment

Abstract

Several experiments were conducted to develop electrically insulating CaO coatings on a V-4Cr-4Ti alloy for application in an Li environment. The coatings were developed by vapor phase transport external to Li, and also in-situ in an Li-Ca environment at elevated temperature. In the vapor phase study, several geometrical arrangements were examined to obtain a uniform coating of Ca on the specimens, which were typically coupons measuring 5 to 10 x 5 x 1 mm. After Ca deposition from the vapor phase, the specimens were oxidized in a high-purity argon environment at 600 C to convert the deposited metal into oxide. The specimens exhibited insulating characteristics after this oxidation step. Several promising coated specimens were then exposed to high-purity Li at 500 C for 48--68 h to determine coating integrity. Microstructural characteristics of the coatings were evaluated by scanning electron microscopy and energy-dispersive X-ray analysis. Electrical resistances of the coatings were measured by a two-probe method between room temperature and 700 C before and after exposure to Li.

Authors:
; ;
Publication Date:
Research Org.:
Argonne National Lab., IL (US)
Sponsoring Org.:
US Department of Energy (US)
OSTI Identifier:
755852
Report Number(s):
ANL/ET/CP-98493
TRN: US0003781
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: 9th International Conference on Fusion Reactor Materials, Colorado Springs, CO (US), 10/10/1999--10/15/1999; Other Information: PBD: 17 May 2000
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 36 MATERIALS SCIENCE; PROTECTIVE COATINGS; CALCIUM OXIDES; ELECTRICAL INSULATION; VANADIUM BASE ALLOYS; LITHIUM; MICROSTRUCTURE; ELECTRIC CONDUCTIVITY; THERMONUCLEAR REACTOR MATERIALS

Citation Formats

Natesan, K., Uz, M., and Wieder, S. Development of electrically insulating coatings for service in a lithium environment. United States: N. p., 2000. Web.
Natesan, K., Uz, M., & Wieder, S. Development of electrically insulating coatings for service in a lithium environment. United States.
Natesan, K., Uz, M., and Wieder, S. Wed . "Development of electrically insulating coatings for service in a lithium environment". United States. https://www.osti.gov/servlets/purl/755852.
@article{osti_755852,
title = {Development of electrically insulating coatings for service in a lithium environment},
author = {Natesan, K. and Uz, M. and Wieder, S.},
abstractNote = {Several experiments were conducted to develop electrically insulating CaO coatings on a V-4Cr-4Ti alloy for application in an Li environment. The coatings were developed by vapor phase transport external to Li, and also in-situ in an Li-Ca environment at elevated temperature. In the vapor phase study, several geometrical arrangements were examined to obtain a uniform coating of Ca on the specimens, which were typically coupons measuring 5 to 10 x 5 x 1 mm. After Ca deposition from the vapor phase, the specimens were oxidized in a high-purity argon environment at 600 C to convert the deposited metal into oxide. The specimens exhibited insulating characteristics after this oxidation step. Several promising coated specimens were then exposed to high-purity Li at 500 C for 48--68 h to determine coating integrity. Microstructural characteristics of the coatings were evaluated by scanning electron microscopy and energy-dispersive X-ray analysis. Electrical resistances of the coatings were measured by a two-probe method between room temperature and 700 C before and after exposure to Li.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {5}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: