Computed Tomography (CT) as a known medical research method is nowadays widely used in research institutions and production companies. Due to its nondestructive testing nature, CT finds application in both final product quality control such as castings or CNC machined parts and research of new materials, e.g. ceramics, composites etc. In aviation industry, one of the main factors in investment casting, crucial to quality of final product are properties and condition of ceramic moulds. Inspection is possible only after filling mould with molten alloy and breaking it after metal solidification. The purpose of article is to examine application of computed tomography in ceramic casting moulds quality control and investigation of certain ceramic pulp components effects on mold porosity and voids characteristics. Specimens in shapes of casting moulds were prepared. Samples were produced using quartz, molochite and various binders. They were examined with micro CT tomography. Test results were presented as high quality 3D models and 2D CT slices of specimens and percentage porosity. As a comparative method of obtaining porosity data, mercury porosimetry tests were carried out.Keywords: Porosity, ceramic mould, computed tomography
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