Developing and Selecting Tribological Coatings

Add to your list(s) Download to your calendar using vCal

• Professor Allan Matthews, School of Materials, the University of Manchester, Director BP International Centre for Advanced Materials
• Thursday 08 February 2018, 11:30-12:30
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ.

If you have a question about this talk, please contact Catherine Pearson.

The talk begins with a brief perspective on the historical background to the subject of Tribology. In regard specifically to the development of wear theories, for many years it was widely believed that the best way to reduce the wear of a surface was to make it harder. This idea was implicit in one of the guiding ‘laws’ of wear (Archard’s Wear Law) which states that wear rate is directly proportional to load and inversely proportional to hardness. In practice, this ‘law’ doesn’t always hold true. What we now know is that (particularly for coated surfaces) both the elastic modulus (E) and the hardness (H) must be considered together when seeking to provide protection. In fact it is the ratio H/E which gives us the best indicator of wear resistance, especially for coatings. In this talk, the reasons for this are discussed and the implications for the development of improved wear-resistant surfaces are outlined, with examples of surfaces which take the optimisation of the H/E ratio as the goal. Examples of coatings which achieve this are discussed, including nanocomposite and nanolayered coatings. Mention is also made of so-called ‘duplex’ coating systems, which combine surface treatments with coatings to gain maximum tribological benefits.

This talk is part of the Institute for Energy and Environmental Flows (IEEF) series.

This talk is included in these lists:

• All Talks (aka the CURE list)
• Cambridge Energy Seminars
• Department of Earth Sciences seminars
• Institute for Energy and Environmental Flows (IEEF)
• NanoDTC Energy Materials Talks
• Open Plan Area, BP Institute, Madingley Rise CB3 0EZ
• history
• ps635

Note that ex-directory lists are not shown.