Infiltration behavior of copper melt into porous graphite and saturation improvement by WC particles doping

2021 ◽  
pp. 1-17
Author(s):  
Wenfu Wei ◽  
Xiaobo Li ◽  
Zefeng Yang ◽  
Haozi Zuo ◽  
Zhanglin Huang ◽  
...  
Keyword(s):  
Porous Graphite ◽  
Copper Melt ◽  
Infiltration Behavior

Wettability in pressure infiltration of SiC and oxidized SiC particle compacts by molten Al and Al-12wt%Si alloy

2007 ◽  
Vol 22 (8) ◽  
pp. 2273-2278 ◽  
Author(s):  
J.M. Molina ◽  
J. Tian ◽  
C. Garcia-Cordovilla ◽  
E. Louis ◽  
J. Narciso
Keyword(s):  
Contact Angle ◽  
Oxide Layer ◽  
Low Temperatures ◽  
Native Oxide ◽  
Native Oxide Layer ◽  
Threshold Pressure ◽  
Pressure Infiltration ◽  
Surface Conditions ◽  
Infiltration Behavior ◽  
Sic Particle

The infiltration behavior of compacts of SiC particles in two surface conditions, as-received and thermally oxidized, was investigated by using pure Al and Al-12wt%Si as infiltrating metals. Analysis of the threshold pressure for infiltration revealed that the process is governed by the same contact angle for all different systems, no matter the metal or particle condition. This leads to the conclusion that oxidation does not modify the wetting characteristics of the particles, most probably because they are already covered by a thin native oxide layer that remains unaltered in processing routes involving short contact times and low temperatures, such as actual conditions of pressure infiltration at 700 °C.

scholarly journals Simulation of Mechanical Deformation and Tribology of Nano-Thin Amorphous Hydrogenated Carbon (a:Ch) Films Using Molecular Dynamics

1996 ◽  
Vol 436 ◽  
Author(s):  
J. N. Glosli ◽  
M. R. Philpott ◽  
J. Belak
Keyword(s):  
Molecular Dynamics ◽  
Substrate Temperature ◽  
Computer Simulations ◽  
Mechanical Deformation ◽  
Porous Graphite ◽  
Pure Carbon ◽  
Substrate Temperatures ◽  
Amorphous Hydrogenated Carbon ◽  
Deposition Energy

AbstractMolecular dynamics computer simulations are used to study the effect of substrate temperature on the microstructure of deposited amorphous hydrogenated carbon (a:CH) films. A transition from dense diamond-like films to porous graphite-like films is observed between substrate temperatures of 400K and 600K for a deposition energy of 20 eV. The dense a:CH film grown at 300K and 20 eV has a hardness (˜50 GPa) about half that of a pure carbon (a:C) film grown under the same conditions.

scholarly journals Percolation Evolution and Characteristics in the Formation Process of Pores for Porous Graphite

2014 ◽  
Vol 26 (17) ◽  
pp. 5396-5402 ◽  
Author(s):  
Qili Wang ◽  
Min He ◽  
Yaqun He ◽  
Yafei Hu ◽  
Qi Liu
Keyword(s):  
Formation Process ◽  
Porous Graphite

Mass removal by oxidation and sublimation of porous graphite during fiber laser irradiation

2016 ◽  
Vol 56 (1) ◽  
pp. 011013 ◽  
Author(s):  
Grady T. Phillips ◽  
William A. Bauer ◽  
Charles D. Fox ◽  
Ashley E. Gonzales ◽  
Nicholas C. Herr ◽  
...  
Keyword(s):  
Fiber Laser ◽  
Laser Irradiation ◽  
Mass Removal ◽  
Porous Graphite

scholarly journals Ударно-волновой полиморфный переход в пористом графите

2021 ◽  
Vol 91 (11) ◽  
pp. 1707
Author(s):  
С.А. Кинеловский
Keyword(s):  
Phase Transition ◽  
Shock Wave ◽  
Elastic Energy ◽  
Polymorphic Transformation ◽  
Polymorphic Transition ◽  
Initial Structure ◽  
Graphite Phase ◽  
Proposed Model ◽  
Porous Graphite ◽  
Wide Range

For the polymorphic transformation of porous graphite in the shock, the previously proposed model linking the process of graphite phase transition with a change in the elastic energy of a substance has been tested. It is shown that the model plausibly describes the experimental results outside the transition zone in a fairly wide range of changes in the porosity of samples with their different initial structure. It is discussed how the model under consideration changes the currently existing ideas about the thermodynamics of the polymorphic transition of matter in a shock wave.

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