Results 111 to 120 of about 1,610 (289)

Cimento aluminoso e seus efeitos em concretos refratários magnesianos espinelizados in situ Calcium aluminate cement and its effects on in-situ spinel containing magnesia refractory castables

Cerâmica, 2010
O uso de concretos refratários alumina-magnésia ligados por cimento aluminoso (CAC) apresenta vantagens decorrentes da presença de espinélio e de CA6 (CaO.6Al2O3), ambas formadas in-situ e acompanhadas de expansão.
D. H Milanez, E. Y Sako, M. F Maia, M. A. L Braulio, L. R. M Bittencourt, V. C Pandolfelli   +5 more
doaj   +1 more source

Pulse Electrodeposited NiFeCoMoW High‐Entropy Alloy Electrode for Efficient Alkaline Water Electrolysis

Small, EarlyView.
A pulse‐electrodeposited NiFeCoMoW high‐entropy alloy grown on copper foam forms a binder‐free, hierarchical electrode for alkaline water splitting. The bifunctional catalyst achieves low overpotentials for hydrogen and oxygen evolution and enables efficient two‐electrode electrolysis, delivering 1.52 V at 10 mA cm−2 and 1.83 V at 1000 mA cm−2.
Ziyao Chen, Yiwei Sun, Mengqing Hu, Mingli Li, Kaidi Zhang, Wanhong Zhang, Zhong Zheng, Ruth Knibbe, Kaicai Fan, Lingbo Zong, Yuhai Dou, Yi Jia, Yun Wang, Huai Qin Fu, Porun Liu, Huijun Zhao   +15 more
wiley   +1 more source

New approach of recycling vanadium‐bearing slags as a binder in high‐alumina refractory castables application

International Journal of Ceramic Engineering & Science
Handling the massive quantities of by‐products from metallurgical processes has become a major concern in recent decades. Efforts to develop sustainable alternatives for these secondary resources are ongoing to achieve the transition to climate ...
Mathilda Derensy, Thomas Zanin, Jan‐Felix Bleck, Thorsten Tonnesen, Jesus Gonzalez‐Julian   +4 more
doaj   +1 more source

Características da sílica coloidal e seus efeitos em concretos refratários Characteristics of colloidal silica and its effects on refractory castables

Cerâmica, 2010
A sílica coloidal se apresenta como um promissor substituto do cimento de aluminato de cálcio para utilização em concretos mulitizáveis. O uso deste ligante promove adequada resistência mecânica a verde, facilidade de secagem, inibe a formação de fases ...
M. V. M Magliano, V. C Pandolfelli
doaj   +1 more source

Refractory Materials for Flame Deflector Protection System Corrosion Control: Coatings Systems Literature Survey [PDF]

When space vehicles are launched, extreme heat, exhaust, and chemicals are produced and these form a very aggressive exposure environment at the launch complex. The facilities in the launch complex are exposed to this aggressive environment.
Calle, Luz M., Coffman, Brekke E., Coffman, Brekke E., Curran, Jerome P., Hintze, Paul E., Kolody, Mark R., Parlier, Christopher R., Perisich, Steven, Sampson, Jeffrey W., Trejo, David, Whitten, Mary   +10 more
core   +1 more source

System as a Unifying Process: An Onto‐Epistemic Notion of System

Systems Research and Behavioral Science, EarlyView.
ABSTRACT This article proposes an onto‐epistemic notion of system as a relational process of unifying a multiplicity of actuals and abstractions into an actual unity, thereby encompassing concreteness and abstraction onto the same plane. This notion rejects the opposition between constructivism and realism within systems studies, the excessive focus on
Felipe Rodrigues Oliveira e Silva, Sandro Luis Schlindwein   +1 more
wiley   +1 more source

Одержання церійвмісних каталізаторів на титані методом мікродугового оксидування [PDF]

, 2011
В статті розглядається вплив концентрації електроліту та густини струму на кінетику мікродугового оксидування сплаву титану у кислих розчинах солей церію.
Дементій, А. В., Коваленко, В. Ю., Смирнова, Олександра Юріївна, Фоміна, Лариса Петрівна, Штефан, Вікторія Володимирівна   +4 more
core   +1 more source

Additive Manufacturing of Hot‐Work Tool Steel by In Situ Alloying Using Laser Powder Bed Fusion and Directed Energy Deposition—Strategies to Improve Chemical Homogeneity

steel research international, EarlyView.
To support future alloy development a powder mixture is processed by laser additive manufacturing. The powder mixture containing Mo‐ and W‐rich tracers is processed by powder bed fusion using single and double laser exposure and by directed energy deposition which provides drastically enlarged melt pools.
Felix Großwendt, Sebastian Weber, Jonathan Lentz   +2 more
wiley   +1 more source

Studying the specific features of the hydration processes of alumina cements based on the compounds of CaO–NiO–Al₂O₃ system [PDF]

, 2018
The article gives the results of studying hydration processes occurring in cement synthesis using waste products of chemical industry. Cement clinker was synthesized with the relation of initial raw components, calcium-containing water treatment waste ...
Khrystych, E. V., Korogodska, A. M., Shabanova, G. M., Shutynskyy, O. G., Tsapko, N. S., Vorozhbiyan, R. M.   +5 more
core  

Recycling End‐of‐Life Solid Oxide Cell Interconnect Assemblies into Commercial‐Grade AISI 304 Stainless Steels

steel research international, EarlyView.
This study validates a recycling pathway for converting interconnect assemblies from end‐of‐life SOC stacks into commercial‐grade AISI 304 steels. Using scrap‐based steelmaking operations, austenitic cast steels with <4.0% δ‐ferrite are successfully produced.
Jeraldine Lastam, Shine‐Od Mongoljiibuu, Alexander Specht, Daniel Grüner, Dmitry Sergeev, Urs A. Peuker, Michael Müller, Ruth Schwaiger   +7 more
wiley   +1 more source