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Title: Filtered cathodic arc source

Patent ·
OSTI ID:869128

A continuous, cathodic arc ion source coupled to a macro-particle filter capable of separation or elimination of macro-particles from the ion flux produced by cathodic arc discharge. The ion source employs an axial magnetic field on a cathode (target) having tapered sides to confine the arc, thereby providing high target material utilization. A bent magnetic field is used to guide the metal ions from the target to the part to be coated. The macro-particle filter consists of two straight solenoids, end to end, but placed at 45.degree. to one another, which prevents line-of-sight from the arc spot on the target to the parts to be coated, yet provides a path for ions and electrons to flow, and includes a series of baffles for trapping the macro-particles.

Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
DOE Contract Number:
W-7405-ENG-48
Assignee:
as represented by United States Department of Energy (Washington, DC)
Patent Number(s):
US 5279723
OSTI ID:
869128
Country of Publication:
United States
Language:
English

References (3)

Coating technology based on the vacuum arc-a review journal January 1990
Review of ionā€based coating processes derived from the cathodic arc journal May 1989
Comparison of two filtered cathodic arc sources journal March 1992