Metallurgical Characterization of Coatings Deposited by Electrospark Deposition
EMSL Project ID
3190
Abstract
Electrospark deposition (ESD) is an innovative process that has been used to produce wear and corrosion-resistant coatings for many applications. ESD deposits a metallurgically-bonded coating by creating an electrical charge buildup in a capacitor bank and discharging it in high current, short duration pulses through an electrode. This melts and vaporizes some of the electrode material and welds it to a substrate. The process has a very low heat input which leaves the substrate at near ambient temperatures.ESD is a coating process in which both the coating to substrate interface and internal splat to splat interfaces are of interest. Coating and substrate materials as well as deposition conditions such as coating environment and power input have an effect on the coating and interface properties. A thorough investigation of the metallurgical characteristics of a variety of coatings is planned, including optical and scanning electron microscopy, nano-indentation and XPS.
Project Details
Project type
Exploratory Research
Start Date
2003-01-16
End Date
2006-01-22
Status
Closed
Released Data Link
Team
Principal Investigator
Team Members