Using Electropulsing to Control the Surface Quality of Casts

Rong Shan Qin

doi:10.4028/p-A6zZ2C

Paper Titles

Effect of Special Plating Films on Galvanic Corrosion Behavior between Metal and CFRTP
p.63

Investigation of Deposition Conditions and Basic Properties of CNF Composite Ni Plated Film by Electroless Plating Method
p.69

Electrolytical Coating of Inhomogeneous Structures Distributed on Metallic Surfaces
p.75

Formation Mechanism of Al₂O₃/HfO₂ Eutectic Coating on SiC Substrate Using Light Focusing Method
p.81

Using Electropulsing to Control the Surface Quality of Casts
p.87

Challenge to Performance Evaluation of Fusion Reactor Materials by Fission Neutron and Charged Particle Irradiation
p.95

Boron Nitride Filled Thermoplastics for Passive Shielding of Space Electronics
p.103

Recent Research on SiC/SiC Composites for PWR
p.109

Ten-Year Recycling of Vanadium Alloy in Fusion Reactors
p.117

HomeMaterials Science ForumMaterials Science Forum Vol. 1106Using Electropulsing to Control the Surface...

Using Electropulsing to Control the Surface Quality of Casts

Abstract:

This paper reports on the mechanisms and provides worked examples of using pulsed electric current to improve the surface properties of conductive materials during solidification. A rough surface is formed via the freezing of thermomechanical fluctuations and external disturbances during solidification. Pulsed electric current provides an extra driving force for the fluctuations to relax in a shorter duration toward the equilibrium state before the material loses the fluidity during cooling. This additional mechanism is associated with the electric current free energy, which depends on the current density distribution at various materials geometries, including the surface profile. The mechanism has been validated by experimental characterization of the surface roughness evolution with and without electropulsing treatment.

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Periodical:

Materials Science Forum (Volume 1106)

Pages:

87-91

DOI:

https://doi.org/10.4028/p-A6zZ2C

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Online since:

December 2023

Authors:

Rong Shan Qin*

Keywords:

Casts, Electropulsing, Roughness, Surface Property

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* - Corresponding Author

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