Workshops will take place on Wednesday, June 7, 2017 and will consist of the following:
- Workshop A: “Optical characterization – Spectroscopic ellipsometry” with J.A. Woollam Co.;
- Workshop B: “Optimization of coating systems for in use condition with indentation, scratch and tribology techniques” with Anton Paar.
Optical characterization – Spectroscopic ellipsometry (sponsored by J. A. Woollam Co. Inc.)
Jianing Sun, Ph.D. (J.A. Woollam Co. Inc.)
Ellipsometry is used to optically characterize all material types: semiconductors, dielectrics, metals, and organics possessing various structures, such as nanostructured and multilayer thin films. With recent advances in optical instrumentation, material research and production development in many fields now rely on the high accuracy of spectroscopic ellipsometry (SE) for the characterization of film thickness and optical properties from VUV to IR. Shorter wavelengths increase sensitivity to ultra-thin films, while IR data allow identification and quantification of chemical bonds, as well as accurate n and k determination.
This one day workshop will feature the following:
- Introduction to spectroscopic ellipsometry: basic theories
- Overview of ellipsometry applications, including In-situ and real-time ellipsometry and advanced applications, such as graded refractive index, anisotropy and Mueller matrix;
- Demonstration of ellipsometry Data analysis;
- Ellipsometry Instrumentation;
- Hands-on laboratory session using the RC2® and IR-VASE® instruments
During the laboratory session, it will be possible to test a limited number of your own samples. In such a case, please contact Bill Baloukas at firstname.lastname@example.org.
Optimization of coating systems for in use condition with indentation, scratch and tribology techniques (sponsored by Anton Paar)
Gregory Favaro (Anton Paar TriTec SA, Switzerland), Pierre Morel (Anton Paar USA Inc.) and Mahdi Dargahi (Anton Paar Canada Inc.)
Workshop description: In order to properly design wear resistant coatings it is necessary to optimize the tribo-mechanical properties of the coating/substrate-system (Elastic modulus, yield strength, adhesion, intrinsic stresses, fracture, .etc). The ultimate goal is to find materials and structural solutions that keep the stress-strain field below the stability limits of the system in typical operating conditions.
In this workshop, the process of designing a wear resistant coating system for a given application using indentation, scratch and tribological testing will be reviewed. The process will be illustrated with the help of several case studies.
More specifically, we will present the capabilities of testing materials in various in use conditions in order to understand the effects of humidity, testing speed or temperatures.
Finally, we will illustrate our presentation with a numerical modeling part. Modelization tools are now very important to reduce the cost of development. During our presentation, we will combine empirical and modeling results to calculate the stresses and behavior within the sliding contact. This will help the users optimize the test parameters in function of the required test.
- Presentation of a real case studies to optimize a wear resistant coating-system;
- Advance presentation of Scratch testing for hard coatings and scratch test modelization;
- Tribology of hard coatings: various aspects of high temperature and vacuum testing;
- Explanation and challenges of high temperature Nanoindentation.
Live demos of the Nanoindentation Tester, Scratch Tester, Calotest and Tribometer will be shown as well.