TY - JOUR N2 - Reduction of three industrial nickel oxides (Goro, Tokyo and Sinter 75) with a hydrogen bearing gas was revisited in the temperature interval from 523 to 673 K (250 to 400°C). A pronounced incubation period is observed in the temperature interval tested. This period decreases as the reduction temperature increases. Thermogravimetric data of these oxides were fitted using the Avrami-Erofeyev kinetic model. The reduction of these oxides is controlled by a nucleation and growth mechanism of metallic nickel over the oxides structure. Rate kinetic constants were re-evaluated and the activation energy for the reduction of these oxides was re-calculated. L1 - http://www.journals.pan.pl/Content/106685/PDF/AMM-2018-2-31-Plascencia.pdf L2 - http://www.journals.pan.pl/Content/106685 PY - 2018 IS - No 2 DO - 10.24425/122404 KW - Nickel oxides reduction KW - hydrogen reduction KW - Avrami-Erofeyev kinetic model KW - nucleation and growth KW - activation energy A1 - Plascencia, G. PB - Institute of Metallurgy and Materials Science of Polish Academy of Sciences PB - Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences VL - vol. 63 DA - 2016.06.30 T1 - Reduction of Industrial Nickel Oxides with a Hydrogen Bearing Gas Between 523 and 673 K UR - http://www.journals.pan.pl/dlibra/publication/edition/106685 T2 - Archives of Metallurgy and Materials ER -