Development of coating thickness gauge for magnetic coatings
Abstract
A gauge to measure the coating thickness of magnetic coatings on non-magnetic base material has been developed by directly measuring the magnetic flux density between the coating and the permanant magnet. Magnetic induction method was found to be inadequate for measuring magnetic coating thickness which is greater than 0.4 mm. Magentic flux density was measured by Hall effect sensor and calibration curve was constructed by using the data acquired from 10 standard reference samples. The developed gauge can be used to measure non-magnetic coatings over magnetic substrate as well. The relative standard error was found to be 2.1% for nickle coatings on copper substrate.
Event details
- Event
- TC10 Workshop 2013
- Technical Committee
- TC10
- Place
- Florence, ITALY
- Time
- 6 June 2013 - 7 June 2013
- Website
- http://www.imekotc10-florence.org/