Results 31 to 40 of about 3,096 (300)

Teor de cimento e seus efeitos sobre a resistência ao choque térmico de concretos espinelizados in-situ Cement content and the thermal shock performance of in-situ spinel formation in refractory castables

Cerâmica, 2008
Concretos refratários aluminosos contendo espinélio são amplamente utilizados como revestimentos de panelas siderúrgicas, devido a sua elevada resistência à corrosão.
G. B. Cintra, M. A. L. Braulio, L. R. M. Bittencourt, V. C. Pandolfelli   +3 more
doaj   +1 more source

Fibras metálicas e sua influência no comportamento mecânico de concretos refratários durante a secagem Influence of steel fiber on the mechanical behavior of refractory castables upon drying

Cerâmica, 2005
A adição de fibras poliméricas pode auxiliar no aumento da resistência à explosão de concretos refratários por meio de dois mecanismos principais: aumento de permeabilidade ou reforço mecânico.
C. M. Peret, V. C. Pandolfelli
doaj   +1 more source

Evolution of an alumina-magnesia/self-forming spinel castable. Part I: Microstructural features Evolução de um refratário de espinélio auto-formado de alumina-magnésia. Parte I: Aspectos microestruturais

Cerâmica, 1999
Refractories containing magnesium aluminate spinel (MgAl2O4) are materials for emerging technology in several applications like cement and steelmaking processes.
D. Gutiérrez-Campos, J. I. Diaz, R. M. Rodriguez   +2 more
doaj   +1 more source

Low cement high alumina castables: Effect of distribution coefficients [PDF]

, 2013
Refractory materials used in various areas of the iron and steel industry need to face severe challenges to meet critical operational parameters at high temperatures.
Parija, Anwesha
core  

The role of aggregates in the thermal stability of Mg-PSZ refractories for vacuum induction melting [PDF]

, 2015
Mg-PSZ refractories used as vacuum induction melting crucibles are particle-reinforced composites with aggregate and matrix phases comprising fused zirconia.
Quadling, Amanda Gail
core   +1 more source

Interaction between Molten Al‐Killed Mn–B Steel and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé, Lukas Neubert, Anton Yehorov, Till M. J. Stadtmüller, Christos G. Aneziris, Olena Volkova   +5 more
wiley   +1 more source

Evaluación de la resistencia al choque término de hormigones refractarios silicoaluminosos. Efecto del tratamiento térmico

Boletín de la Sociedad Española de Cerámica y Vidrio, 2019
Resumen: En este trabajo se analizó la respuesta al choque térmico de formulaciones comerciales de hormigones refractarios silicoaluminosos con el objetivo de evaluar la factibilidad de su uso como reemplazo de ladrillos refractarios de composición ...
Federico Faccin, Andrea F. Prado, Analía Gladys Tomba Martinez, Leandro Ramajo   +3 more
doaj   +1 more source

Influence of Sample Preparation and Processing Procedures on the Thermal Diffusivity of MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan, Rhena Wulf, Till M. J. Stadtmüller, Christos G. Aneziris, Tobias M. Fieback   +4 more
wiley   +1 more source

Biomass Native Structure Into Functional Carbon‐Based Catalysts for Fenton‐Like Reactions

Advanced Functional Materials, EarlyView.
This study indicates that eight biomasses with 2D flaky and 1D acicular structures influence surface O types, morphology, defects, N doping, sp2 C, and Co nanoparticles loading in three series of carbon, N‐doped carbon, and cobalt/graphitic carbon. This work identifies how these structural factors impact catalytic pathways, enhancing selective electron
Wenjie Tian, Jingkai Lin, Zhihao Tian, Selusiwe Ncube, Huayang Zhang, Emiliano Cortés, Hongqi Sun, Shaobin Wang   +7 more
wiley   +1 more source

Europe's contribution to the evaluation of the use of systemic antimicrobials in the treatment of periodontitis

Periodontology 2000, EarlyView., 2023
Abstract This narrative review celebrates Europe's contribution to the current knowledge on systemically administered antimicrobials in periodontal treatment. Periodontitis is the most frequent chronic noncommunicable human disease. It is caused by dysbiotic bacterial biofilms and is commonly treated with subgingival instrumentation.
David Herrera, Arie Jan van Winkelhoff, Paula Matesanz, Katalina Lauwens, Wim Teughels   +4 more
wiley   +1 more source