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In Reply to: RE: graphene apps posted by Story on May 01, 2021 at 12:37:20
from link below:
"SEAS has developed a protective paint using graphene that can be applied to magnesium cones in order to protect the magnesium and prevent oxidation.[2] However, in this case, graphene is not improving the fundamental audio performance of the loudspeaker, only the speakers' environmental stability. The applications of graphene that are of the most interest for loudspeakers are those that have the potential to improve audio quality."
Joseph Audio uses SEAS graphene coated drivers;Ora-Sound uses graphene in their headphones among others I suspect.
Follow Ups:
fun fact ... did you know that it's virtually impossible to prevent the oxidation of magnesium surfaces after foundry processing but once it has the oxidation process stops and it's actually protected by it as a thin layer that's fairly impermeable and very durable ... as in nearly impossible to remove ... I seem to recall that as a selling point for using the material in 'speaker' cones ... alloy for aeronautic use, bicycle frames, camera & timepiece guts ... everywhere you don't want oxidation!
the only way 'on earth' to prevent the material from oxidizing is to first clean it in a vacuum, which is extremely difficult, and then maintain it in a vacuum
so what's the graphene for?
Graphene is the new graphite. Graphene is a super material, it's a carbon based molecule that has a number of very useful properties for audio. Graphene has been used in Head tennis rackets (Djokovic) for its Stiffness and light weight about ten years (Graphite racquets supplanted titanium, magnesium and carbon about 25 years ago) and in audiophile contact enhancers and cables(!) for maybe seven years. It has also been used in some audiophile fuses (!)The characteristics of interest of Graphene for audiophiles are extremely conductive, this it would make an excellent conductor of electricity and RFI shield. It has a very high Stiffness so it would be a good material for audiophile speaker diaphragms.
Drawbacks of Graphene are its properties apply to a single molecule thickness of Graphene, although Graphene layers or in solution probably have similar but perhaps less dramatic characteristics. It is difficult to make in it's pure form and difficult to handle. Maybe paint or spray paint, or apply using electrolysis. Audio Applications are constrained only by your imagination.
Edits: 07/15/23 07/15/23
Might by something to it?
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