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| Abstract No.: |
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Scheduled at:
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Wednesday, May 11, 2016, Yellow River Hall 9:20 AM
Automotive Industry
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| Title: |
Superlight ball bearings of CFK embedded thermally sprayed coatings
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| Authors: |
Birger Hussong / TU-Dortmund/Institute for Material's Technologies, Germany
Wolfgang Tillmann / Technical University Dortmund / Institute of Materials Engineering,
C. Schaak*/ Technical University Dortmund , Germany
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| Abstract: |
As lightweight design is a mayor issue for modern engineering, a lot of effort has been put into the development of carbon fiber reinforced machine components for space, aero, and automotive applications. Although CFK components provide an outstanding strength/weight ratio, their tribological resistance is rather poor. As a consequence, parts with a high tribological load, such as bearings, are still made of high strength steels or sintered ceramics, if a very high performance is needed.
This work presents an approach to build high performance lightweight ball bearings by embedding thin rings of thermally sprayed cermet coatings into CFK rings. The thermally sprayed coatings are chemically stripped from the substrate they were sprayed on and subsequently wrapped with CFK long fiber material until the strength and stiffness of the composite meets the requirements for bearing applications. This feasibility study is a first step towards the production of long-life, lightweight ball bearings, which are more economical and shock resistant than pure ceramic ball bearings.
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