Effect Of Cationic Charging Agent On The Bonding Strength Of Coarse Titanium Particles Deposited By Electrophoretic Deposition

Lau, Kok Tee and Sorrell, Charles Christopher (2014) Effect Of Cationic Charging Agent On The Bonding Strength Of Coarse Titanium Particles Deposited By Electrophoretic Deposition. International Journal of the Institute of Materials Malaysia, 1. pp. 1-15. ISSN ISSN: 1511-8487

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Abstract

Electrophoretic deposition (EPD) is a potential coating technique for surface hardening of steel when combined with a subsequent rapid sintering process. This process requires synergy between suspension particles and charging agent, particularly when the particles involved are noncolloidal in nature. The present work will investigate the effect of three commercially-available cationic charging agents; aluminium (III) chloride (AlCl3), polyethyleneimine (PEI) and poly(diallyldimethylammonium chloride) (PDADMAC) on the EPD of coarse Ti particles onto steel. The obtained Ti coatings were characterized by their surface microstructure, deposit yield, electrophoretic mobility and electrical conductivity. The key finding of the present study is the bonding strength of charging agent-adsorbed coarse Ti particles deposits predominantly controlled their deposit yield. Electrophoretic mobility of the Ti particles only played a lesser role in the deposit yield because of strong hindrance of gravity on the moving coarse particles. Charging agent, which gave the strongest to the weakest bonding strength is as follow: AlCl3, PDADMAC (Mw = 100,000 -200,000 amu), PDADMAC (Mw = 400,000 -500,000 amu), PEI.

Item Type:	Article
Uncontrolled Keywords:	Titanium particles, Electrophoretic deposition, Bonding strength, Coating, Polyelectrolyte
Divisions:	Faculty of Manufacturing Engineering > Department of Engineering Materials
Depositing User:	Dr. Kok Tee Lau
Date Deposited:	22 Apr 2014 08:15
Last Modified:	02 Sep 2021 13:51
URI:	http://eprints.utem.edu.my/id/eprint/12153
Statistic Details:	View Download Statistic

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