Nisil

{{Short description|Metal alloy of nickel and silicon}} '''Nisil''' is an alloy of nickel (95.5% wt.) and silicon (4.4% wt.) with traces of Mg (0.1% wt.), which is non-magnetic.

Nisil melts at 1341 - 1420 °C, has a density of 8.58 g/cm³, and electrical resistivity of 0.365 Ω⋅mm²/m at 20 °C.

It is often used in conjunction with Nicrosil in type N thermocouples. In this use, it serves as the negative leg of the thermocouple. It offers higher thermoelectric stability in air above 1000°C (1830°F) and better oxidation resistance than type E, J and K thermocouples. It can not be exposed to sulphur-containing gases.

==External links== * [http://www.omega.com/temperature/Z/pdf/z016.pdf Materials properties of thermocouple wires sold by Omega Engineering, Inc.] {{Webarchive|url=https://web.archive.org/web/20111217090430/http://www.omega.com/temperature/Z/pdf/z016.pdf |date=2011-12-17 }} * [http://www.thermometricscorp.com/thermocouple.html Thermocouples properties by Thermometrics.] * [http://kanthal.com/en/products/material-datasheets/wire/thermocouple-wire/nisil/ Properties of Nisil]

{{alloy-stub}} Category:Nickel alloys Category:Silicon alloys Category:Refractory metals