01:02:45
The first and most enduring application of nanoindentation is the characterization of hard coatings designed for mechanical and chemical protection of an underlying material. Diamond-like carbon is a common coating of this kind, with typical coating thickness being less than 100nm. This session is a live demonstration of nanoindentation with the KLA iNano, optimized for very shallow nanoinden...
Posted Wednesday, May 13, 2020
01:00:57
In digital circuits, materials with low permittivity separate the conducting parts from one another; materials with lower permittivity provide better electrical and magnetic insulation. Continuous reduction in scale drives the optimization problem of lowering the permittivity of the insulator as much as possible, without compromising mechanical integrity, as quantified by the Young’s modulus. ...
Posted Wednesday, March 11, 2020
01:12:49
Although optical coatings are designed for the control of light (anti-reflective, reflective, splitting, filtering, etc.) it is their mechanical properties which govern longevity. Scratches at any scale lead to excessive absorption of laser energy causing localized thermal stress and ultimate failure. This session is a live demonstration of dynamic nanoindentation with the KLA iMicro nanoindent...
Posted Wednesday, November 27, 2019
52:20
Jennifer Hay unlocks all of the analysis used in dynamic nanoindentation and the continuous stiffness measurement technique. The CSM technique is the greatest advancement in nanoindentation over the last 30 years.
Posted Wednesday, October 9, 2019
01:01:00
In its most basic form, instrumented indentation involves pressing an indenter of known geometry into a test surface while continuously monitoring force and displacement. In this session, we review the test and analysis commonly known as the “Oliver-Pharr” method for measuring hardness and Young’s modulus. The continuous measurement of force and displacement affords two important advantages ove...
Posted Wednesday, June 12, 2019
57:39
The first and most enduring application of nanoindentation is the characterization of hard coatings designed for mechanical and chemical protection of an underlying material. This session is a live demonstration of standardized nanoindentation with the KLA iMicro nanoindenter to characterize an industrial nitride coating on a tungsten- carbide substrate. Ms. Hay demonstrates sample mounting, in...
Posted Tuesday, May 14, 2019
53:30
In 1992, Warren Oliver and George Pharr published an article that revolutionized hardness testing. The genius of Oliver and Pharr was that they devised a way to know the size of a hardness indentation without imaging it. This development disrupted Vickers and Knoop microhardness testing, which required direct measurement of the lengths of the indentation diagonals. Not having to image the inden...
Posted Wednesday, April 10, 2019
