To shorten the wait for the 14th ThGOT and the 6th Optics Colloquium we would like to give you a small foretaste of our numerous exciting technical presentations in the coming weeks.
Surface analysis: mechanical investigations, electrostatic potentials
Bastian Arlt, Anton Paar Germany GmbH, Ostfildern
The properties of a material surface and interaction are crucial for the usability of a material in industrial and everyday applications. In addition to microscopic and spectroscopic methods of tribology or hardness and scratch testing, the measurement of zeta potential as a method for surface characterization is becoming increasingly important in materials research. We are investigating 4 important questions:
1. wherever solids move against each other, they usually slide more easily if there is a lubricant between the two bodies. How does tribology work?
2. surfaces often finished with only a few µm or with even thinner layers are standard on almost every everyday product these days. "How thick is the coating?", "Does it adhere well enough to perform your function?" and "Is it sufficiently scratch and abrasion resistant?" An overview of hardness and scratch testing.
3. as an indicator of surface charge, the zeta potential helps to predict and adjust the effectiveness of adsorption and desorption kinetics on surfaces. By treating or modifying a surface, the charge property of the material can be optimized in favor of a desired kinetics.
4. a view of nanometer-scale morphology is possible with the atomic force microscopy (AFM) method.
This talk will be presented in SESSION C: NEW MEASUREMENT METHODS IN SURFACE ENGINEERING on March 13, 2019 at 11:00 am.
Early process control through non-contact coating thickness measurement
Nils Reinke, Winterthur Instruments AG, Winterthur (Switzerland)
The applied coating thicknesses are traditionally only checked after the coating has completely dried or cured. Due to this delayed process control, coating defects are often not detected until hours after the coating process. Rejects, increased material consumption and loss of time are the consequence.
This paper presents the thermal coating test (TSP), a method to check the coating thickness directly after application of the coating. Process deviations are quickly detected and corrected with TSP. Following the introduction of the technology at more than 200 production sites worldwide within the last 3 years, an interim assessment is presented focusing on the following questions: How much material can be saved through early process control? How reliably can quality and production problems be detected? How are changeover processes to the new technology proceeding?
This talk will be presented in SESSION C: NEW MEASUREMENT METHODS IN SURFACE ENGINEERING on March 13, 2019 at 11:20 am.