My oven door is broken and I am currently using a strong magnet to keep it closed. The magnet is on the outside of the oven door. If it gets heated up a little I want to know if it will still work.
2007-04-23 07:59:49 · 4 answers · asked by Sinnistergrin 2 in Science & Mathematics ➔ Physics
Yes, if you heat them beyond 170 degrees Fahrenheit (80 degrees Celsius) the magnets will quickly loose their magnetic properties. Sustaining these temperatures for a length of time or heating the magnet significantly higher than this will permanently demagnetize it. Other types of magnets such as Samarium-Cobalt have higher heat resistance. There are also other types of Nd-Fe-B magnets that are not as susceptible to heat induced flux degradation.
2007-04-23 08:09:33 · answer #1 · answered by Anonymous · 0⤊ 0⤋
It depends on the type of magnet you are using. A neodymium magnet has a low temperature at which it demagnetizes, while a samarium magnet has a high one. A gadolinium magent has a temperature low enough that it is necessary to stick it in liquid air to make it magnetic. A strong magnet would most likely be one made from a rare earth metal.
2007-04-23 15:24:24 · answer #2 · answered by Liquid Astatine 2 · 0⤊ 0⤋
Heat can demagnetize a magnet. Also, shock will do it. So try to treat the magnet especially gentrly when it is hot. Unless there is something incredibly dangerous involved, I'd suggest you just give it a try. Remember, be gentle.
2007-04-23 15:09:26 · answer #3 · answered by Anonymous · 0⤊ 0⤋
It will work. You need to get above the Curie temperature for it to demagnetize which is over 1000 degrees Kelvin.
http://hyperphysics.phy-astr.gsu.edu/hbase/tables/curie.html#c1
2007-04-23 15:08:32 · answer #4 · answered by Gene 7 · 0⤊ 0⤋