Nickel

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Nickel, Ni, atomic number 28, is a pretty average silver-colored metal, it has good corrosion resistance and is a fairly strong metal. It also sticks to a magnet, just like iron.

Nickel is most well known for use in coins, because it is tough enough not to get too scratched, and doesn't corrode with day-to-day use, most united states coins have nickel in them, the coin known as a nickel is surprisingly an alloy of 25% nickel and 75% copper, as are dimes. However Canadian coinsused to be made out of 99% pure nickel, because Canada is a top producer of the metal, 10 and 25 cent coins where this purity before 1999, and 5 cent coins before 1981.

Nickel is very commonly plated onto steel to protect it from rusting, and nickel is used as a base to plate copper on, which in turn can be a base for gold. Gold and copper are plated this way because they attach to each other best in this order, where as gold might not plate to nickel, and copper might not plate to steel beneath the nickel.

These are my samples!

Pure Nickel Squares

These squares are what you get when you order nickel from a supplier, assuming you want something smaller than ingot.. They weigh a bit over an ounce each and are a beautiful sample of 99.94% pure nickel.

Date added(year-month-day):20121226, sample number:107

Tags(Elements in sample):nickel

Nickel Powder

Homemade, by me, from some beat-up old Canadian coins, this is >95% pure nickel powder, made with various methods(bench grinder, large file, jeweler's file), and collected with a strong magnet. It's fun mess with this stuff with a magnet and watch it form little spikes due to magnetic fields(steel filings are probably cheaper source of this amusement though), and I think I actually magnetized mine because it seems oddly clumpy now...

Date added(year-month-day):20111013, sample number:75

Tags(Elements in sample):nickel

Canadian Coins

Canada, being one of the biggest exporters and miners of the metal nickel, used to make almost all of their coins from fairly high-purity nickel, which explains why they stick to a magnet(Nickel being one of the few metals that isn't iron that is magnetic). Nickels before 1989, and dimes and quarters before 1999, are all very good purity nickel, therefor I save them whenever I come upon them.

Date added(year-month-day):20110724, sample number:21

Tags(Elements in sample):nickel

Nichrome Alloy

This is a resistor, or actually several resistors, from a car, used in making the fan run at variable speeds. The thicker/thinner spirals are more/less resistance, so when you turn the nob to turn the fan up it routes the electricity through one of these, if you turn it up it goes through a thicker wire, turn it down, a thinner one. Nichrome (Being about 80% nickel and 20% chromium)is used because it has high resistance, but doesn't corrode or melt easily when it gets hot.

Date added(year-month-day):20110724, sample number:18

Tags(Elements in sample):nickel, chromium

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