Results 51 to 60 of about 1,223,985 (239)

Influence of Al and Ti on microstructure and quality of compacted graphite iron castings [PDF]

open access: yesMetalurgija, 2009
The contribution is aimed at study of influence of chemical composition of compacted graphite cast iron (CGI) on microstructure and surface quality of castings, particularly on the occurrence of pinholes. It has been found out that aluminium and titanium
T. Elbel, J. Hampl
doaj  

Computational Assessment of Thermal Conductivity of Compacted Graphite Cast Iron

open access: yesAdvances in Materials Science and Engineering, 2019
Two-dimensional FE models of CGI with different pearlite contents for thermal conductivity analysis were established according to the real metallographic images obtained by Pro/E and ANSYS.
Yue Wu   +7 more
doaj   +1 more source

Understanding and Designing Phase Change Materials: Insights From Atom Probe Tomography

open access: yesAdvanced Science, EarlyView.
Atom probe tomography can distinguish metallic, covalent, and metavalent bonds based upon their bond rupture; in particular, the probability to form more than one ion (PME) in laser‐assisted field evaporation. These findings open new avenues in understanding and designing phase change materials (PCMs) since they allow quantification of bonds in solids ...
Jan Köttgen   +3 more
wiley   +1 more source

Research on Creep Test of Compacted Graphite Cast Iron and Parameter Identification of Constitutive Model under Wide Range of Temperature and Stress

open access: yesApplied Sciences, 2022
With the increase in engine power density, the temperature and stress carried by the cylinder head during operation also increase. The thermal engine fatigue life prediction of the cylinder head needs to consider accurate and reasonable creep ...
Guoxi Jing   +5 more
doaj   +1 more source

Single‐Atom‐Enhanced Fully Inkjet‐Printed Electrochemical Sensor for Dopamine Detection

open access: yesAdvanced Science, EarlyView.
Fully inkjet‐printed paper‐based dopamine sensors are fabricated using nitrogen‐doped graphene acid functionalized with copper single atoms. The copper sites uniquely enhance dopamine oxidation through strong molecular adsorption, as verified by electrochemical measurements and DFT calculations. The approach highlights the potential of single‐atom inks
Martin‐Alex Nalepa   +11 more
wiley   +1 more source

Estudo dos mecanismos de desgaste em ferramentas de nitreto de silício aplicadas no torneamento dos ferros fundidos vermicular e cinzento [PDF]

open access: yes, 2009
Tese (doutorado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
Xavier, Fábio Antônio
core  

Effect of antimony on graphite growth in ductile iron [PDF]

open access: yes, 2020
Antimony is used in ductile cast iron melts to avoid graphite degenerations like exploded graphite and chunky graphite. However, the effect of Sb in the melt on the crystallization of ductile cast iron is still unknown, therefore the aim of our ...
Dekker, Lutz   +2 more
core   +1 more source

Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries

open access: yesAdvanced Science, EarlyView.
A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke   +7 more
wiley   +1 more source

Aspectos tecnológicos do torneamento do ferro fundido vermicular com ferramentas de metal-duro, cerâmica e CBN [PDF]

open access: yes, 2003
Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico.
Xavier, Fábio Antônio
core  

Microstructural Characterization of Graphite Spheroids in Ductile Iron [PDF]

open access: yes, 2012
The present work brings new insights by transmission electron microscopy allowing disregarding or supporting some of the models proposed for spheroidal growth of graphite in cast irons. Nodules consist of sectors made of graphite plates elongated along a
Laffont-Dantras, Lydia   +5 more
core   +1 more source

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