Zobrazeno 1 - 10
of 93
pro vyhledávání: '"Nobumitsu Shohoji"'
Autor:
Nobumitsu Shohoji, Fernando Almeida Costa Oliveira, José Galindo, José Rodríguez, Inmaculada Cañadas, Jorge Cruz Fernandes, Luís Guerra Rosa
Publikováno v:
ChemEngineering, Vol 5, Iss 2, p 19 (2021)
Using a high-flux solar furnace, loosely compacted powders of Va-group transition metal (V, Nb, and Ta) were reacted with stream of NH3 gas (uncracked NH3 gas) being heated by concentrated solar beam to a temperature (T) range between 600 and 1000 °
Externí odkaz:
https://doaj.org/article/e84f365c473644e19593d166be9c2119
Publikováno v:
Thermochimica Acta. 719:179394
Decomposition temperatures of δ-MoN and ε-Fe2N synthesized with flowing NH3 gas under concentrated solar radiation heating were evaluated by Differential Scanning Calorimetry (DSC) in Argon (Ar) gas environment. The measured decomposition temperatu
Autor:
Isabel Figueira Vasques, Jose A. Rodriguez, Nobumitsu Shohoji, Fernando A. Costa Oliveira, Inmaculada Cañadas, Luís Guerra Rosa, Jorge Cruz Fernandes
Publikováno v:
Solar Energy. 138:119-127
Low-temperature (600–800 °C) short-time (30–90 min) nitriding of IVa-group transition metals, Ti and Zr, in flow of NH3 gas (uncracked ammonia) was carried out under heating with concentrated solar beam in the vertical type SF5 solar furnace at
Autor:
Fernando A. Costa Oliveira, Inmaculada Cañadas, Nobumitsu Shohoji, Luís Guerra Rosa, Jose A. Rodriguez, Jorge Cruz Fernandes, José Galindo
Publikováno v:
ChemEngineering
Volume 5
Issue 2
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
ChemEngineering, Vol 5, Iss 19, p 19 (2021)
Volume 5
Issue 2
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
ChemEngineering, Vol 5, Iss 19, p 19 (2021)
Using a high-flux solar furnace, loosely compacted powders of Va-group transition metal (V, Nb, and Ta) were reacted with stream of NH3 gas (uncracked NH3 gas) being heated by concentrated solar beam to a temperature (T) range between 600 and 1000 de
Autor:
Jorge Cruz Fernandes, Fernando A. Costa Oliveira, Inmaculada Cañadas, Nobumitsu Shohoji, Luís Guerra Rosa, Jose A. Rodriguez, Teresa Magalhães
Publikováno v:
Ciência & Tecnologia dos Materiais. 28:112-116
Over the last two decades, the authors have been using concentrated solar beam as the reaction heat source for synthesizing carbides and nitrides of d -group transition elements in view of usage of ecological renewable energy source in place of conve
Autor:
Nobumitsu Shohoji
Publikováno v:
International Journal of Materials Engineering and Technology. 15:75-92
Autor:
Nobumitsu Shohoji
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Equilibrium isothermal pressure-composition relationships reported for H solubility in body centered cubic (bcc) V11yMyHx (M = Cr, Mo, Fe or Co) by Suzuki et al. recently on this journal were analyzed with statistical thermodynamics under a priori as
Publikováno v:
Thin Solid Films. 705:138011
Statistical thermodynamic characterization was attempted for equilibrium hydrogen (H) absorption data in quasi-crystalline Ti0.45Zr0.38Ni0.17-Hx and amorphous Ti0.49Zr0.29Ni0.22-Si0.09Hx alloys. H atom distribution patterns in these non-crystalline m
Autor:
Jose A. Rodriguez, Teresa Magalhães, Nobumitsu Shohoji, Luís Guerra Rosa, Jorge Cruz Fernandes, Fernando A. Costa Oliveira, Inmaculada Cañadas
Publikováno v:
Repositório Científico de Acesso Aberto de Portugal
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Repositório Científico de Acesso Aberto de Portugal (RCAAP)
instacron:RCAAP
Carbides and nitrides of d -group transition metals are classified as refractory hard material and their industrial importance has been recognized for long. In recent years, unique functionalities including catalytic function and superconductivity ar
Autor:
L. Guerra Rosa, J. Rodriguez Garcia, F. Almeida Costa Oliveira, C. Ramos Minarro, I. Canadas Martinez, Tiago Magalhães, F. Cestari, J. Cruz Fernandes, Nobumitsu Shohoji
Publikováno v:
Materialwissenschaft und Werkstofftechnik. 44:959-971
Flowing gaseous ammonia NH3 with suppressed extent of dissociation (un-cracked NH3) is acknowledged to function as a powerful nitriding medium to realize formation of metal nitride MNx with considerably high N/M ratio x that cannot be achieved throug