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The film was obtained in ultra-high vacuum (10-7 Pa) and had the following structure: 3×(Fe(9nm)/Si(2 nm)) / Si (substrate). The thickness of an individual Fe layer was 9 nm, and that of a Si layer was 2 nm. As a substrate monocrystalline Si was used. The film was covered by a protective amorphous Si layer with the thickness of 30 nm.

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Calcium carbide is a chemical compound that is industrially used in the production of calcium cyanamide for fertilizer and also in welding. When calcium carbide comes into contact with water it produces acetylene gas that hastens the ripening of several fruits such as mangoes, bananas and apples.

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: silicon carbide is used for the de-oxidation and re-carburation of cast iron and steel in foundries. It can also be used to enhance efficiency in ferroalloy , refractories: resistance to high temperature and abrasion make silicon carbide a natural component of furnace refractory linings and other high temperature components. abrasive

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18/12/2003· Examples of suitable conventional abrasive particles include fused aluminum oxide (including white fused alumina, heat-treated aluminum oxide and brown aluminum oxide), silicon carbide, boron carbide, titanium carbide, diamond, cubic boron nitride, garnet, fused alumina-zirconia, and sol-gel-derived abrasive particles, and the like.

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The Si, Ti, Cr, and W were employed in order to make matrix materials dependant on aluminum, copper, wet diamond, and carbide forming metals. The requirement for carbide formation on diamond surface has been efficiently demonstrated by Weber et al. [60]. They illustrated the effect of thermal conductivity and coefficient of thermal expansion of

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Calcium carbide is a chemical compound that is industrially used in the production of calcium cyanamide for fertilizer and also in welding. When calcium carbide comes into contact with water it produces acetylene gas that hastens the ripening of several fruits such as mangoes, bananas and apples.

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The calcined gypsum is used for various types of plasters, board and block, preformed gypsum tile, partition tile, and roof plank. By far the largest use of calcined gypsum (stucco) takes place in the manufacture of board products. Gypsum board is a sandwich of gypsum between two layers of …

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06/06/2019· using a 600-grit silicon carbide abrasive paper (3M W etordry abrasive sheet, 3M, Minnesota, U nited States) and lubricant in an automatic machine (Nano 2000 grinder-polisher with

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Calcined bauxite is one of the principal ore of aluminum. Calcined bauxite contains hydrous aluminum oxides and aluminum hydroxides, formed through the laterization of aluminous rocks in tropical and subtropical areas .calcined bauxite is obtained by calcining (heating)superior grade bauxite at high temperature (from 85OC to 1600C) .this removes moisture there by increasing the alumina content

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The surfaces of the pipes were polished using sand paper up to 4000 grit silicon carbide. Two sets of three replie samples of mild steel pipe were buried vertically one above the other in the moistened bentonite in one Perspex box, see Figure 5.11. The total depth of …