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Wear Behavior in Microactuator Interfaces

  • R. Bandorf
  • F. Pape
  • H. H. Gatzen
  • G. Bräuer
Chapter
Part of the Microtechnology and MEMS book series (MEMS)

Abstract

The growing number of active microsystems applications leads to a demand for enhanced reliability and durability of the moving microparts. The lifetime of the microsystems is closely related to protective coatings on the mating surfaces. This chapter deals with the improvement of the microwear resistance of various thin films, the deposition techniques, and the analysis tools on the microscale. The thin films were prepared using Physical Vapor Deposition (PVD) and Plasma Enhanced Chemical Vapor Deposition (PECVD). From a variety of coatings, the most promising results were gained for carbon based films. The typical film thickness was in a range of a few hundred nanometer. The micro-/nanowear was investigated by an Atomic Force Microscope (AFM) based under single asperity contact by methods of nanoindentation and nanoscratch testing. For an investigation of multi asperity contact specific test equipment was set up for characterization under rotating and oscillating motion. Along with the improvement by the coatings it was found that additionally the substrate material plays an important role for the microtribological system.

Keywords

Abrasive Wear Physical Vapor Deposition Plasma Enhance Chemical Vapor Deposition Test Body Abrasive Wear Resistance 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Berlin Heidelberg 2011

Authors and Affiliations

  1. 1.Fraunhofer Institute for Surface Engineering and Thin FilmsFraunhofer-GesellschaftBraunschweigGermany
  2. 2.Institute for Microtechnology (now: IMPT)Leibniz Universität HannoverHanoverGermany

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