Electroless plating monitor

Details Electroless plating monitor Electroless plating monitor

1982-12-10

1984-10-16

Morgenstern, Norman

Coating processes

Measuring, testing, or indicating

Thickness or uniformity of thickness determined

324 65R, 427 96, 427 97, 427304, 427305, 427306, 427 98, B05D 100, G01R 2702

Patent

active

044774842

ABSTRACT:
Apparatus and method for determining the initiation, progression and quality electroless plating of blind or through hole walls in circuit panels. A test coupon for monitoring plating is provided having a sensitized initiation conductivity zone and sensitized through-hole walls arranged in a series resistance circuit with both conductivity zone and series circuit being measured periodically as to resistivity to determine the start or "take" of electroless plating and its progress during continued immersion.

REFERENCES:
patent: 3134690 (1964-05-01), Eriksson
patent: 3400014 (1968-09-01), Blumberg et al.
patent: 4073964 (1978-02-01), Herrmann

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