Manufacturing Industry
Improved diamond coating technique.(COATINGS)
Advanced Ceramics Report, November, 2005
Scientists at Brunel University, UK, have developed an improved plasma-assisted chemical vapour deposition (PACVD) method for coating thin diamond-like films, and have used the technique to develop low-friction medical implants.
In the technique, the component to be coated is mounted in a vacuum chamber on an electrode connected to a high energy radio-wave transmitter. A hydrocarbon gas, such as methane, is pumped into the chamber and the energy from the radio waves disassociates the electrons from the carbon atoms in the hydrocarbons to produce positive carbon ions. These are attracted to the negatively charged component to produce the diamond-like coating (DLC).
Lead researcher Professor Joe Franks said "The advantage of this method is that the...
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