Title: Method of forming magnetic brush support member

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Claims: What is claimed is:

1. The process of forming a magnetic brush support member comprising a cylindrical sleeve having a surface adapted to support a magnetic brush including magnetic particles comprising:

providing a composite including a metal binder component of aluminum and a particulate second phase component of tungsten carbide, said tungsten carbide component having a greater abrasion resistance than said aluminum component, said tungsten carbide particles having an irregular shape with jagged edges;

centrifugally casting said composite material into the shape of said cylindrical sleeve, whereby said tungsten carbide particles are segregated toward said support surface;

etching said aluminum component to dissolve a portion of said aluminum about said tungsten carbide component so that the tungsten carbide component protrudes from the surface of said aluminum component.

2. A process as in claim 1, wherein said etching step comprises applying boiling acetic acid to said surface.

Other info:

Inventors: Drummond, Jr., Arthur (Walworth, NY, US)

Application Number: 544978
Filing Date: 1975-01-29
Publication_date: 1976-06-08
Assignee: Xerox Corporation (Stamford, CT)
Primary Class(es): 29/527.6 216/22
Other Classes:
US Patent Ref:

3333579	Aug, 1967	Shockley et al.	156/7.
3375181	Mar, 1968	Koech	156/6.

Other Refs:
Primary Examiner: Powell, William A.
Assistant Examiner:
Attorney: Weinstein; Paul, Green; Clarence A., Ralabate; James J.