Platinum Iridium Meter

Platinum Iridium Meter. The alloy 90/10 plat iridium containing 10 per cent iridium has very good all round manufacturing characteristics it can be cast welded machined and stamped it is ductile and malleable can be hardened through working and does not readily oxidize Because of these advantages 90/10 Plat Iridium has traditionally been one of the most important jewelry alloys.

Due to its high density hardness and resistance to corrosion platinumiridium was used to make the international prototype kilogram and the international prototype meter One use for Pt/Ir alloy is fabrication of metal microelectrodes for electrical stimulation of nervous tissue and electrophysiological recordings.

platinum iridium meter Related Topic News Echemi

The Levack West Nickel Mine is in Ontario Canada The Levack West Nickel Mine was closed at the time of data entry with no known plans to reopen The ore mined is composed of pentlandite sperrylite and chalcopyrite The ore body is described as irregularly shaped 406 meters (1333 feet) wide and 152 meters (500 feet) thick.

Platinum/Iridium H. Cross Company

Until 1960 the SI standard of length was disseminated using platinumiridium meter bars such as these from the NIST Museum Credit NIST.

Platinum–iridium alloy Wikipedia

Download Image of PlatinumIridium meter bar Free for commercial use no attribution required Computer generated image of International Prototype Metre bar made of 90% platinum 10% iridium alloy This was the standard of length for the SI (Metric system) from 1889 until 1960 when the SI system changed to a new definition of length based on the wavelength of light.