Electricity: measuring and testing – Magnetic – By paramagnetic particles
Patent
1980-07-07
1982-11-30
Strecker, Gerard R.
Electricity: measuring and testing
Magnetic
By paramagnetic particles
G01N 2784, G01R 3312
Patent
active
043618065
ABSTRACT:
Method and composition for non-destructive testing of a magnetizable workpiece wherein the surface of the workpiece is treated with an aqueous emulsion of a waxy solid having fluorescent magnetizable particles suspended therein, a magnetic field is created along the workpiece so that the magnetizable particles are attracted to imperfections therein, and then sufficient water is removed from the emulsion so that the waxy solid forms a film which contains the immobilized fluorescent particles which have become attached to imperfections in the workpiece. The film may be further protected by the application of finely divided abrasion resistant particles, such as glass beads or glass powder.
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Magnaflux Corporation
Strecker Gerard R.
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