METHOD OF SURFACE STRUCTURE DETECTION FOR ARTICLE MATERIAL Russian patent published in 2008 - IPC G01N1/28 

FIELD: physics.

SUBSTANCE: invention concerns technology of material preparation for tests and optical research of its microstructure, and can be applied as a method of layer-by-layer control of metal, alloy, glass and building material structural state after fabrication of articles and during operation, and of determination of sudden article failure causes. The method involves preliminary preparation of surface - cleaning and degreasing, coating of surface heated in advance to 50-150°C above the polymer melting point with polymer layer, melting of the polymer on the surface and forming of a polymer coating, and cooling the coated article down. At that, the heated surface of metal, glass or building article is coated with a melt layer of transparent thermocontractable polymer, and the melt layer is held until gas bubbles enter the transparent polymer melt from the article pores. Then the polymer coating is exposed to pulse pressure equal to the integral force of air bubbles collapse in the polymer layer and force required for filling article capillaries and pores with the polymer melt to a given depth equal to the depth of layer separated from the article. The composite material on the article surface includes separable article layer as filler and coating polymer as bond. The article with composite surface is cooled in conditioning mode. The polymer coating is held till the end of the shrinkage process within it, and the composite layer is separated mechanically from the main article material. Structural state of the separated layer and main article surfaces is performed with an optical microscope in the reflected light.

EFFECT: simplification of layer structure detection.

10 dwg