Results 71 to 80 of about 596 (233)

Efeito do tempo de exposição a uma atmosfera coqueificante na microestrutura e nas propriedades de um concreto refratário usado na indústria petroquímica Effect of the exposure time in cokemaking atmosphere on the microstructure and properties of a refractory castable used in the petrochemical industry

Cerâmica, 2012
Os concretos refratários usados em unidades de craqueamento catalítico fluidizado (UFCC) podem sofrer deterioração pela deposição de coque durante o processo de produção de hidrocarbonetos leves, ocasionando a diminuição do tempo de funcionamento do ...
M. D. Cabrelon, A. H. A. Pereira, J. Medeiros, R. D. Toledo-Filho, J. A. Rodrigues   +4 more
doaj   +1 more source

Influência dos aditivos de consolidação sobre as propriedades termomecânicas da matriz de concretos de projeção Influence of setting additives on the thermomechanical properties of wet shotcrete refractory castables' matrix

Cerâmica, 2004
A projeção a úmido de concretos refratários consiste na aplicação do material na forma de um jato de "spray" sobre uma superfície, resultando numa elevada taxa de instalação e eficiente compactação do material.
Y. A. Marques, D. Vasques Filho, R. G. Pileggi, V. C. Pandolfelli   +3 more
doaj   +1 more source

Automated Photothermal Control of Block Copolymer Self‑Assembly and Metal Oxide Nanostructures Sintering

Macromolecular Rapid Communications, EarlyView.
This study presents a microscope‐based photothermal platform that integrates structured laser light projection with machine‐learning‐optimized illumination. By employing neural‐network models to predict and generate thermal profiles, the platform achieves precise thermal processing of block copolymer films.
Filip Franciszek Powala, Piotr Szustakiewicz, Przemyslaw Pula, Pawel Wawrzyniec Majewski   +3 more
wiley   +1 more source

Resistência à erosão de concretos refratários de alta alumina nanoligados Erosion resistance of nanobonded high-alumina refractory castables

Cerâmica, 2011
A avaliação do emprego de concretos refratários nanoligados em aplicações onde ocorre desgaste por erosão é de importante interesse devido aos estudos recentes que indicam esta rota como uma alternativa à substituição do cimento de aluminato de cálcio ...
V. A. A. dos Santos, E. Prestes, J. Medeiros, J. L. B. Veiga, V. C. Pandolfelli   +4 more
doaj   +1 more source

Study on The Effect of Different Sols on High Alumina Castable Refractory [PDF]

, 2017
Ever-increasing demand and application of unshaped refractories replacing shaped ones have inspired the scientists and manufacturers to investigate these materials in depth for further improving the quality and performance.
Singh, Akhilesh Kr.
core  

Microstructural evolution of V‐Ti‐B based high‐temperature alloys during surface conditioning by means of laser beam melting Entwicklung der Gefüge von V‐Ti‐B‐Hochtemperatur‐Legierungen während der Oberflächenmodifikation mittels selektivem Laserstrahlschmelzen

Materialwissenschaft und Werkstofftechnik, EarlyView.
This study explores laser beam melting (LBM) on V‐Ti‐B alloys for high‐temperature applications. By applying two laser power levels, researchers analyzed microstructural evolution via scanning electron microscopy and energy dispersive spectroscopy. Hardness tests revealed surface conditioning increases of 5 % ‐ 33 %.
M. Carrion Saldaña, W. Yang, G. Hasemann, H.‐J. Christ, R. Schwaiger, M. Krüger, B. Gorr, A. von Hehl   +7 more
wiley   +1 more source

Effects of alternate fuels. Report No. 6. Analysis of low-alumina castable refractory degraded by residual oil combustion products [PDF]

This is the sixth of a series of reports on analyses of several types of refractories used in industrial furnaces with fuels considered alternate to natural gas.
Tennery, V. J., Wei, G. C.
core  

Epistemic diversity and the politics of knowledge in plant disease management: Insights from the Xylella fastidiosa epidemic in southern Italy

PLANTS, PEOPLE, PLANET, EarlyView.
Xylella fastidiosa is a major plant pathogen affecting crops such as grapes, citrus, almonds, and olives, with potentially severe consequences for agricultural production and rural livelihoods worldwide. This paper examines the conflict around the management of the X. fastidiosa outbreak affecting olive trees in southern Italy.
Fabio Gatti, David Ludwig, Phil Macnaghten   +2 more
wiley   +1 more source

The effect of aggregate aspect ratio and temperature on the fracture toughness of a low cement refractory concrete

Materials Research, 2003
This work investigated the influence of the aggregate's aspect ratio on the fracture behavior of a low cement aluminum silicate refractory castable treated at two different temperatures (110 °C and 1000 °C).
Laura Brum Prata, Walter Libardi, João Baptista Baldo   +2 more
doaj   +1 more source

Utilisation of fly ash in insulating castable refractory

, 2001
Environmental Management Division, Central Fuel Research Institute, P.O. F.R.I., Dhanbad-828 108, India Manuscript received 21 February 2000, revised 30 August 2000, accepted 22 December 2000 Utilisation of fly ash as a raw material for making insulating castable refractory has been explored.
S. Maitra, S. Kumar, M. Vishwakarma, S. Dutta   +3 more
openaire   +1 more source