HIP densification project. Final CRADA report

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Description

An investigation was conducted to evaluate the use of HIPed aluminum castings as near-net-shape blanks for large electrostatic focusing electrodes in ion lithography machines. The electrodes must have very smooth finishes which are free of pores and other defects. This has heretofore been achieved by rough-machining the blanks out of large forged aluminum billets and final diamond-turning. The use of a near-net-shape casting for the blank was expected to save a significant amount of money and time. The test was conducted on a single cast blank which was supplied by the Partner in the HIPed and stress relieved condition. Rough ... continued below

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29 p.

Creation Information

Franco-Ferreira, E.A. & Finkelstein, W. August 29, 1997.

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This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided by UNT Libraries Government Documents Department to Digital Library, a digital repository hosted by the UNT Libraries. More information about this report can be viewed below.

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  • Oak Ridge Y-12 Plant
    Publisher Info: Oak Ridge Y-12 Plant, TN (United States)
    Place of Publication: Tennessee

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Description

An investigation was conducted to evaluate the use of HIPed aluminum castings as near-net-shape blanks for large electrostatic focusing electrodes in ion lithography machines. The electrodes must have very smooth finishes which are free of pores and other defects. This has heretofore been achieved by rough-machining the blanks out of large forged aluminum billets and final diamond-turning. The use of a near-net-shape casting for the blank was expected to save a significant amount of money and time. The test was conducted on a single cast blank which was supplied by the Partner in the HIPed and stress relieved condition. Rough machining and diamond turning operations conducted by LMES/ER revealed that the casting contained unacceptably large defects. The conclusion was reached that HIPed aluminum castings in the large sizes and of the quality levels required would probably be unobtainable in a cost-effective manner. An alternative approach, using ring forgings assembled by electron beam welding was proposed and investigated by LMES/ER. Although an electrode blank was not obtained, the study indicated that this approach would be successful and cost-effective.

Physical Description

29 p.

Notes

OSTI as DE98052937

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  • Other Information: PBD: 29 Aug 1997

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  • Other: DE98052937
  • Report No.: Y/AMT--480
  • Grant Number: AC05-84OR21400
  • DOI: 10.2172/672070 | External Link
  • Office of Scientific & Technical Information Report Number: 672070
  • Archival Resource Key: ark:/67531/metadc702370

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Creation Date

  • August 29, 1997

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 8, 2016, 5:16 p.m.

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Franco-Ferreira, E.A. & Finkelstein, W. HIP densification project. Final CRADA report, report, August 29, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc702370/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.