Results 131 to 140 of about 6,533 (216)

Kinetic study of the oxide-assisted catalyst-free synthesis of silicon nitride nanowires

, 2006
The synthesis of Si3N4 nanowires from the reaction of silicon nanoparticles with N2 in the 1200-1440 C temperature range is reported. The nitridation conditions are such that the reaction with nitrogen is favoured by the presence of silicon oxide in the ...
Cao, Cao, Chen, Chen, Costa, Dang, Farjas, Gopalakrishnan, Han, Han, Inomata, Kim, Ma, Motojima, Moulson, Parikh, Pigeon, Ramesh, Ran, Sheldom, Wang, Wu, Yin, Zhang, Zhang, Zhang, Zhang   +26 more
core   +2 more sources

Missing Member in the M^II M^III Si₄ N₇ Compound Class: Carbothermal Reduction and Nitridation Synthesis Reveal Substitution of Nitrogen by Carbon and Oxygen in CaLu[Si₄ N_7-2x C_x O_x ]:Eu²⁺ /Ce³⁺ (x≈0.3). [PDF]

Chemistry, 2022
Gamperl L, Zeman OEO, Strobel P, Schmidt PJ, Schnick W.   +4 more
europepmc   +1 more source

In situ propellant production: Alternatives for Mars exploration [PDF]

Current planning for the Space Exploration Initiative (SEI) recognizes the need for extraterrestrial resources to sustain long-term human presence and to attain some degree of self-sufficiency.
Cole, Kevin J., Collins, John T., Jacobs, Mark K., Stancati, Michael L.   +3 more
core   +1 more source

Roasting of sulphide using carbothermal reduction

, 2016
The carbothermic reduction process is a direct reduction of sulfides. It allows a roasting in which higher concentrations of metals such as molybdenum are obtained by using both a reducing agent (in this case, carbon C) and a sulfur scavenger, such as CaO so as to prevent air toxic gases pollution such as SO2.
Orozco, Ivana Marcela, Bazan, Vanesa Lucia, Diaz, Andrea Alejandra, Lara, Rodolfo Francisco   +3 more
openaire   +1 more source

Carbothermic reduction of sulphide minerals

, 1984
Imperial Users ...
Jha, A., Jha, A.
openaire   +1 more source

Multidisciplinary research leading to utilization of extraterrestrial resources Quarterly status report, 1 Oct. 1968 - 1 Jan. 1969 [PDF]

Magnetic properties of simulated lunar rock ...
Atchison, T. C.
core   +1 more source

Production and use of metals and oxygen for lunar propulsion [PDF]

Production, power, and propulsion technologies for using oxygen and metals derived from lunar resources are discussed. The production process is described, and several of the more developed processes are discussed.
Colvin, James E., Groth, Mary F., Hepp, Aloysius F., Landis, Geoffrey A., Linne, Diane L.   +4 more
core   +1 more source

Effect of high temperature VPT conditions on the development of aligned ZnO nanorod arrays grown by a three step catalyst-free method [PDF]

, 2013
Using Transmission Electron Microscopy-related techniques, we study the effect of the high temperature in the Vapour Phase Transport (VPT) process on the morphology and chemistry of VPT ZnO nanorod arrays deposited on a two-step Chemical Bath Deposition (
Ben, T., Byrne, Daragh, Fath Allah, R., García, R., González, D., McGlynn, Enda   +5 more
core  

Mass balance at partial run of quartzite carbothermal reduction

Metalurgija, 2016
Mass balance for the process of incomplete carbothermal reduction of SiO2 to SiC thermogravimetric studies was presented. Tests were performed for the molar ratio of C/SiO2 = 3 at a temperature of 1 500 °C under an argon flow in the range from 0,1 to 3,4
J. Węgrzyn
doaj  

Thermodynamics of nano-zirconium carbide powder prepared by hydrothermal synthesis and carbothermal reduction

Journal of Materials Research and Technology
Nano-zirconium carbide precursor was prepared by hydrothermal method. Nanometer zirconium carbide powder was prepared by carbothermal reduction reaction.
Xiangwei Zhu, Liujie Xu, Cui Chaopeng, Qinzhuang Liu, Haowei Wang   +4 more
doaj   +1 more source