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3Assuntos: “...Niobium carbide. 15Kh2MFA ferritic steel. Powder metallurgy. High energy milling and composite...”
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4“...The largest amount of Niobium reserves of the planet is available at Brazil, which is estimated...”
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5“...One of the materials that is currently highlighted are the compounds of niobium, because they have...”
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doctoralThesis -
6“... of the variation of the niobium concentration as binder on the mechanical properties and wear resistance...”
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7“...The study of wet doped and solid path doping methods to obtain niobium oxides and niobium carbides...”
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8“...This work presents a method for producing carbides of tungsten and niobium at low temperature...”
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9“..., there is the niobium oxide, which presents strong acid sites and exists in abundance. Brazil is the largest producer...”
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10“... applications. An unprecedented addition to this ligand would be the use of niobium, a metal of high global...”
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11“... type mesoporous molecular sieves modified with the inclusion of niobium and tantalum atoms from...”
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12“... reactions to be applied on fuel cells. Those catalysts are based on oxides and precursors of mixed niobium...”
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13“..., the influence of mechanical alloying on the alumina-based composites with nickel or niobium addition...”
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14“... resources of Brazil were used, namely, the sun in the Northeast region and niobium, revealing that solar...”
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15“... reactions of hexadecane have been held. Besides SAPO, niobium phosphate - NbP - were also impregnated...”
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16“... the microstructure of metal matrix composites based nickel with addition of carbides of tantalum and / or niobium...”
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17“... the possibility of partially replacing Co with Nb (niobium). For this purpose, composite powders of WC-10%Co, WC...”
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18“... by up to 44% with the BDD anode supported on niobium and platinum cathode on 2 mol L-1 of H2SO4...”
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20“... of this work is to contribute to the development of new EUROFERbased alloys with the addition of niobium...”
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21“... results showed that this new kind of PDC can successfully produce using a new pure Niobium binder...”
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doctoralThesis