TY - JOUR N2 - The paper presents selected granular ceramic materials available on the Polish market. Their characteristics have been determined in the aspect on application in the production of iron alloy-ceramic composite. The possibility of obtaining a composite layer by means of bulk grains in molds of plates were considered, which was the foundation for experimental molds to be used in service tests. On the basis of obtaining results was stated that the knowledge of the characteristics of bulk grains enables the calculation of their quantity necessary for the composite production. When using the bulk grains the thickness of the composite layer is restricted by the thermal relations (cooler) and the physical phenomena (buoyancy, metal static pressure). Increasing amount of grains above definite condition causes surface defects in the castings. Each casting, due to its weight, shape and place of composite layer production requires an individual approach, both at the stage of formation and that of calculation of the required quantity of ceramic grains. L1 - http://journals.pan.pl/Content/107806/PDF/AFE%203_2018_01.pdf L2 - http://journals.pan.pl/Content/107806 PY - 2018 IS - No 3 EP - 10 KW - ceramics KW - composite KW - cast iron KW - granular KW - properties A1 - Dulska, A. A1 - Kilarski, J. A1 - Studnicki, A. A1 - Szajnar, J. PB - The Katowice Branch of the Polish Academy of Sciences VL - vol.18 DA - 2018.09.21 T1 - The Characteristics of the Granular State of Ceramic Particles in the Aspect of Producing Metal-Ceramic Composite Layers in Molds SP - 5 UR - http://journals.pan.pl/dlibra/publication/edition/107806 T2 - Archives of Foundry Engineering ER -