1 Pyrolytic graphite square 25 mm x 25 mm x 0.5 mm, GBP 9.95 – Picture 0

1 Pyrolytic graphite square 25 mm x 25 mm x 0.5 mm, GBP 9.95 – Picture 1

1 Pyrolytic graphite square 25 mm x 25 mm x 0.5 mm, GBP 9.95 – Picture 2

1 Pyrolytic Graphite Square 25 Mm X 25 Mm X 0.5 Mm

GBP 9.95

Bedford, United Kingdom
Jan 29th

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A square measuring 25 mm x 25 mm x 0.5 mm The Pyrolytic graphite will levitate more than 1 mm above N52 magnets indefinately, without any form of outside assistance. The Pyrolytic graphite is perfectly shaped, as manufactured at the factory. The sides are perfectly straight and the corners precise right angles. The edges are smooth right angles to the faces.There has been no attempt to reduce the cut size. This was one of the sizes of piece that featured on our pyrolytic graphite levitation demonstrators in our promotional video that we uploaded onto You Tube: http://www.youtube.com/watch?v=fBuAjE_sCtA Magnametals are the UK's number 1 supplier of high quality Pyrolytic Graphite. If you want larger quantities, or an assortment of our large range of shapes, just email us your requirement for a quote, which will be heavily discounted. Enjoy. Pyrolytic Graphite Pyrolytic graphite is a unique form of graphite manufactured by decomposition of Methane gas at very high temperature, approximately 2000 degrees celcius, in a vacuum furnace. The result is an ultra-pure product which is near theoretical maximum density. Pyrolytic carbon is high purity carbon, it exhibits high permeability, corrosion resistance, crystal orientation as well as heat, electricity, magnetism properties and is extremely anisotropic. The material is grown one atomic layer at a time at the rate of 1/40 mm an hour onto a substrate giving it a layered composition. The layers of carbon atoms form crystals of hexogonal sheets. This also means it has different properties in different planes. In the C plane (across its layers) it has low thermal conductivity, acting as an insulator. In the A-B plane (with the layers) it has very high thermal conductivity, acting as a superb conductor. Pyrolytic graphite is the most diamagnetic (450 x 10-6) against the cleavage plane, exhibiting the greatest diamagnetism (by weight) of any room-temperature diamagnet. Bismuth is second highest at(170 x 10-6) Diamagnetic materials create an induced magnetic field in a direction opposite to an externally applied magnetic field, and are repelled by the applied magnetic field. In contrast, the opposite behaviour is exhibited by paramagnetic materials. Diamagnetism is a quantum mechanical effect that occurs in all materials; where it is the only contribution to the magnetism the material is called a diamagnet. Unlike a ferromagnet, a diamagnet is not a permanent magnet. Its magnetic permeability is less than ?0 (the permeability of free space). Diamagnets were first discovered when Sebald Justinus Brugmans observed in 1778 that bismuth and antimony were repelled by magnetic fields. The term diamagnetism was coined by Michael Faraday in September 1845, when he realized that every material responded (in either a diamagnetic or paramagnetic way) to an applied magnetic field. PROPERTY METRIC VALUE Density 2.2 gr / cm 3 Flexural Strength - AB 89.6 mpa Compressive Strength - AB 103.4 mpa Compressive Strength - C 172.4 mpa Shear Strength - AB 6.9 mpa CTE - AB 0.5 Microns / m ° C CTE - C 6.5 Microns / m ° C Thermal Conductivity - AB 400 W / (m 2. K / m) Thermal Conductivity - C 3.5 W / (m 2. K / m) Resistivity (RT) - AB 0.5 * 10-3 ohm / cm Resistivity (1650C) - AB 0.3 * 10-3 ohm / cm Resistivity (RT) - C 0.5 ohm / cm Resistivity (1650C) - C 0.3 ohm / cm

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New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...

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