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DOI 10.2172/555544
Title Roughening and removal of surface contamination from beryllium using negative transferred-arc cleaning
Creator/Author Castro, R.G. ; Hollis, K.J. ; Elliott, K.E. [Los Alamos National Lab., NM (United States). Materials Science and Technology Div.]
Publication Date1997 Dec 01
OSTI IdentifierOSTI ID: 555544; Legacy ID: DE98001329
Report Number(s)LA-UR--97-3276; CONF-970992--
DOE Contract NumberW-7405-ENG-36
Other Number(s)Other: ON: DE98001329; TRN: TRN: AHC29802%%129
Resource TypeTechnical Report
Resource RelationConference: 1. international symposium on applied plasma science, Los Angeles, CA (United States), 22-26 Sep 1997; Other Information: PBD: [1997]
Research OrgLos Alamos National Lab., NM (United States)
Sponsoring OrgUSDOE, Washington, DC (United States)
Subject36 MATERIALS SCIENCE ;32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; BERYLLIUM; SURFACE CLEANING; AEROSPACE INDUSTRY; PLASMA ARC SPRAYING; PLASMA GUNS; EXPERIMENTAL DATA; ROUGHNESS
Description/Abstract Negative transferred-arc (TA) cleaning has been used extensively in the aerospace industry to clean and prepare surfaces prior to plasma spraying of thermal barrier coatings. This non-line of sight process can improve the bond strength of plasma sprayed coatings to the substrate material by cleaning and macroscopically roughening the surface. A variation of this cleaning methodology is also used in gas tungsten arc (GTA) welding to cathodically clean the surfaces of aluminum and magnesium prior to welding. Investigations are currently being performed to quantify the degree in which the negative transferred-arc process can clean and roughen metal surfaces. Preliminary information will be reported on the influence of processing conditions on roughening and the removal of carbon and other contaminates from the surface of beryllium. Optical, spectral and electrical methods to quantify cleaning of the surface will also be discussed. Applications for this technology include chemical-free precision cleaning of beryllium components.
Country of PublicationUnited States
LanguageEnglish
FormatSize: 8 p.
AvailabilityOSTI as DE98001329
System Entry Date2007 May 07

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