Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1978-03-20
1980-04-08
Kaplan, G. L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
324 71R, G01N 2746
Patent
active
041971760
ABSTRACT:
A process applicable to metal and metalloid surfaces for detecting and determining the boundaries of stressed areas and areas exhibiting chemical variations involves ascertaining at a number of points on a surface the electrical potential generated between the surface and an electrode when both are in contact with a solution of an electrolyte. The surface and electrode may be of the same material or different and the electrolyte may be a soluble salt of the same metal as either the surface or the electrode or of another metal. The testing can be carried out by hand or automatically. Apparatus suitable for carrying out the tests is disclosed, such apparatus including means for testing individual points or for obtaining one or more continuous readings of the generated potential across the surface.
REFERENCES:
patent: 2183531 (1939-12-01), Allison
patent: 3034050 (1962-05-01), Yuen
patent: 3323515 (1967-06-01), Foner et al.
patent: 3346477 (1967-10-01), Wolfer
patent: 3689393 (1972-09-01), Davis
patent: 3808105 (1974-04-01), Rozeanu
Webster's Seventh New Collegiate Dictionary, (1963).
Harlan, Jr. Ashlan F.
Kaplan G. L.
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