Process for detecting voids in ceramic bodies

Details Process for detecting voids in ceramic bodies Process for detecting voids in ceramic bodies

1992-03-17

1995-03-07

Beck, Shrive

Coating processes

Measuring, testing, or indicating

427 10, 427228, 427245, 427294, B05D 100

Patent

active

053956419

ABSTRACT:
A process for detecting any defect in a ceramic body, including the steps of forming an electrically conductive layer in any such defects including fine voids present in the ceramic body, and then detecting presence or absence of the defect by measuring electrical conductivity between two given points shorted by the electrically conductive layer. The electrically conductive layer may be formed by penetrating an electrically conductive liquid into the defect. Alternatively, the electrically conductive layer may be formed by penetrating a penetrable liquid capable of forming the electrically conductive layer by thermal treatment or chemical treatment and thermally or chemically treating same.

REFERENCES:
patent: 4034286 (1977-07-01), Lev et al.
patent: 4443278 (1984-04-01), Zingher
patent: 4578279 (1986-03-01), Zingher
patent: 4894251 (1990-01-01), Sieverin
De-Zeitschrift: Mitt. des Vereins Dt. Emailfachleute e.V. Patent Abstracts of Japan, vol. 14, No. 349, P-1084, Jul. 27, 1990; JP-2-126147.

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