Method of measuring vapor deposited coating thickness

Details Method of measuring vapor deposited coating thickness Method of measuring vapor deposited coating thickness

1972-10-10

1977-09-27

Pitlick, Harris A.

Coating processes

Measuring, testing, or indicating

427 9, 427 10, 427250, 427251, 427294, 427295, 118 4, 118 5, 118 6, 118 7, 118 8, 118 9, 73340, 73341, 73351, 73355R, C23C 1300, C23C 1302

Patent

active

040512703

ABSTRACT:
The temperature of a substrate to be vacuum vapor coated is measured immediately before its is passed over a source of coating metal vapor and immediately after the vapor has condensed on it. Costing conditions are controlled to maintain the difference between those temperatures at a value which is related to the thickness of the condensed coating by a heat balance equation.

REFERENCES:
patent: 2545576 (1951-03-01), Godley
patent: 2665224 (1954-01-01), Clough et al.
patent: 2812270 (1957-11-01), Alexander
patent: 3016732 (1962-01-01), Hanysz et al.
patent: 3455730 (1969-07-01), Gimigliano

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