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Title: Process for the fabrication of aluminum metallized pyrolytic graphite sputtering targets

An improved method is disclosed for fabricating pyrolytic graphite sputtering targets with superior heat transfer ability, longer life, and maximum energy transmission. Anisotropic pyrolytic graphite is contoured and/or segmented to match the erosion profile of the sputter target and then oriented such that the graphite`s high thermal conductivity planes are in maximum contact with a thermally conductive metal backing. The graphite contact surface is metallized, using high rate physical vapor deposition (HRPVD), with an aluminum coating and the thermally conductive metal backing is joined to the metallized graphite target by one of four low-temperature bonding methods; liquid-metal casting, powder metallurgy compaction, eutectic brazing, and laser welding. 11 figs.
Inventors:
; ;
Issue Date:
OSTI Identifier:
87728
Assignee:
Univ. of California, Oakland, CA (United States) PTO; SCA: 661220; PA: EDB-95:120670; SN: 95001431103
Patent Number(s):
US 5,428,882/A/
Application Number:
PAN: 8-042,704
Contract Number:
W-7405-ENG-48
Resource Relation:
Other Information: PBD: 4 Jul 1995
Research Org:
University of California
Country of Publication:
United States
Language:
English
Subject:
66 PHYSICS; TARGETS; FABRICATION; SPUTTERING; PYROLYTIC CARBON; SERVICE LIFE; ENERGY TRANSFER

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