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Author(s): , , , , , , , , , ,

Keywords: , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

Abstract: Seven different types of nanocrystals were used as additives in aluminosilicate bricks to determine if this is a valid method of decreasing the thermal diffusivity of the bricks for use as plant coating in the iron and steel industries. Each type of nanocrystal was added in  concentration percentages of 0.5, 1, and 2 wt. % to determine the effect of concentration on thermal transport and physical properties. It was found that all of the samples at 2 wt. % showed improved mechanical compression resistance. Bricks containing nano-aluminium hydroxide at 2 wt. % filler concentration were found to have the lowest thermal diffusivity of all the samples at 0.585 ± 0. 003 mm2/s, indicating that of the samples tested, these bricks would be the most thermally insulating. Bricks containing nano-calcium carbonate at 2 wt. % filler concentration were found to have the greatest resistance to mechanical compression breaking where a pressure of 103.0 ± 0.1 MPa was reached.

Reference: Nanomaterials and Nanotechnology, 5, 28 (2015) 1-11

DOI: 10.5772/61068