NDLI: Anodizing of high electrically stressed components

Content Provider	IEEE Xplore Digital Library
Author	Flores, P. Henderson, D.J. Good, D.E. Hogge, K. Mitton, C.V. Molina, I. Naffziger, C. Cordova, S.R. Ormond, E.C.
Copyright Year	2013
Description	Author affiliation: Nat. Security Technol., LLC, Los Alamos, NM, USA (Flores, P.) \|\| Sandia Nat. Labs., Albuquerque, NM, USA (Cordova, S.R.; Ormond, E.C.) \|\| Nat. Security Technol., LLC, Las Vegas, NV, USA (Henderson, D.J.; Good, D.E.; Hogge, K.; Mitton, C.V.; Molina, I.; Naffziger, C.)
Abstract	Anodizing creates an aluminum oxide coating that penetrates into the surface as well as builds above the surface of aluminum, creating a very hard ceramic type coating with good dielectric properties. Electrical carrying components (or spool in this case) located in the high vacuum rod-pinch diode section of an x-ray producing machine over time and usage experience electrical breakdown, thus yielding undesirable x-ray dosages or failure. Machine operators have recorded decreases in x-ray dosages over numerous shots using the reusable spool component; re-anodizing the interior surface of the spool did not provide improvements as expected. Machine operation subject matter expert deployed coating the anodized surface with vacuum oil to eliminate electrical breakdown as a temporary fix. It is known that an anodized surface is very porous and it is because of this porosity that the surface has the ability to trap air, which electrically is a catalyst for electrical breakdown. In this paper we present this field solution to eliminating electrical breakdown of the electrical carrying spool component by oiling. We will also present results of surface anodizing improvements by surface finish preparation and surface sealing. We will also present similarity of oiling the anodized surface to anodized hot dip sealing.
Starting Page	1
Ending Page	1
File Size	131100
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6634798
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	National security Coatings Surface finishing Vacuum breakdown Laboratories
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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