Iridium Coatings with Titanium Sub-Layer Deposited by RF Magnetron Sputtering: Mechanical Properties and Contact Behavior with RoHS-Compliant Glass Melt

In this contribution, we report on the mechanical properties of iridium coatings with titanium sub‐layer deposited by RF magnetron sputtering. Measurements of the coating adhesion were performed with scanning scratch test. The microhardness and effective Young's modulus were determined by nanoi...

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Bibliographic Details
Published in:Plasma processes and polymers 2009-06, Vol.6 (S1), p.S678-S683
Main Authors: Hagen, Jan, Burmeister, Frank, Fromm, Alexander, Manns, Peter, Kleer, Günter
Format: Article
Language:English
Subjects:
Coatings
Contact
Contact melting
corrosion
Deposition
Glass
hardness
Iridium
Melts
metal-containing coatings
physical vapor deposition (PVD)
scratch test
Titanium
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Summary:In this contribution, we report on the mechanical properties of iridium coatings with titanium sub‐layer deposited by RF magnetron sputtering. Measurements of the coating adhesion were performed with scanning scratch test. The microhardness and effective Young's modulus were determined by nanoindentation test. In order to evaluate the suitability of the coating for glass molding applications, the contact behavior with a hot melt of a RoHS‐compliant glass type was investigated. It was observed that iridium coatings with titanium sub‐layer deposited on tungsten carbide substrates exhibited excellent thermomechanical durability. Furthermore, the coating was chemically resistant against the hot glass melt since no degradation of the coating's surface was observed after 5000 cyclic contacts with hot P‐LaSF47 glass melt.
ISSN:1612-8850
1612-8869
DOI:10.1002/ppap.200931701