Results 41 to 50 of about 163,982 (274)

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

The Influence of Crystallisation on Thermal Shock Behaviour of a Fused Silica Refractory Castable Concrete

, 2019
The Influence of Crystallisation on Thermal Shock Behaviour of a Fused Silica Refractory Castable ...
TONNESEN Thorsten, TONNESEN Thorsten (8121659), ANDREEV Kirill, TELLE Rainer, TELLE Rainer (8121668), TADAION Vahid (8166786), ANDREEV Kirill (8166789), TADAION Vahid   +7 more
core   +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

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

Advanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati, Karthik Kumar Banku, Prasanth Bondi, Ivan Zhirnov, Yangyiwei Yang, Gordon Schmidt, Jürgen Christen, Georg Hasemann, Manja Krüger, Bai‐Xiang Xu, Bilal Gökce, Silja‐Katharina Rittinghaus   +11 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

High‐Temperature Phase Transformation in a V‐9Si‐6.5B Alloy: The Kinetic and Crystallographic Pathway From V5SiB2 to V8SiB4

Advanced Engineering Materials, EarlyView.
In situ synchrotron high‐energy X‐ray diffraction reveals the real‐time high‐temperature phase evolution of a ternary V‐9Si‐6.5B alloy. The study uncovers a kinetically delayed V5SiB2 → V8SiB4 transformation governed by massive structural and chemical barriers.
Zahra Sabeti, Andreas Stark, Roja Rani Korrayi, Florian Pyczak, Georg Hasemann   +4 more
wiley   +1 more source

The Effect of Temperature on the Fundamental Characteristics of Self-Compacting No-Cement Refractory Castable

, 2018
In this research, the impact of firing temperature and MgO addition on mechanical and physical properties of self–compacting no-cement castables were investigated. For this propose up to 3.3 wt % of MgO was added to the corundum castable compositions and
Lenka Nevřivová
core   +1 more source

Microstructure Modification of Additively Manufactured Mo–9Si–8B by Annealing and Its Effects on High‐Temperature Mechanical Properties

Advanced Engineering Materials, EarlyView.
Postbuild annealing systematically modifies the phase fractions and morphology of EB‐PBF processed Mo–9Si–8B. Quantitative microstructure–property correlations reveal how controlled phase evolution enhances high‐temperature compressive strength and creep resistance.
Christopher Schmidt, Yong Chen, Georg Hasemann, Benjamin Wahlmann, Carolin Körner, Manja Krüger   +5 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

Técnicas para avaliação da consolidação de suspensões cerâmicas com o uso de diferentes ligantes Techniques for setting evaluation of ceramic suspensions with different binders

Cerâmica, 2007
O desenvolvimento de concretos refratários avançados exige uma otimização simultânea das propriedades reológicas (fluidez e trabalhabilidade) e do tempo de desmoldagem desses materiais.
I. R. Oliveira, R. D. dos Anjos, V. C. Pandolfelli   +2 more
doaj   +1 more source