Why are neodymium magnets illegal?
The swallowing of small magnets such as neodymium magnetic spheres can result in intestinal injury requiring surgery. The magnets attract each other through the walls of the stomach and intestine, perforating the bowel. The U.S. Centers for Disease Control reported 33 cases as of 2010 requiring surgery and one death.
What is the letter for neodymium?
It all starts with the letter ‘N’, all the names of neodymium magnets begin with ‘N’ for neodymium. The number that follows is a little more technical as this represents the maximum energy product of the magnet in ‘Mega-Gauss Oersteds’ (MGOe). This is the primary indicator of a magnets ‘strength’.
What is a grade 5 magnet?
Handle with care. The weakest grade of ceramic material is grade 1, which is typically non-oriented. Grades 5 and 8 are oriented ceramic material. Grade 8 is the strongest ceramic magnet material available (Refer to properties chart below).
What is the strongest neodymium?
Since they were first introduced, stronger grades of neodymium magnets have become commercially available as manufacturing techniques have become more advanced. The strongest grade currently available is the N55, although it is not yet widely used.
Is neodymium harmful to humans?
Neodymium is mostly dangerous in the working environment, due to the fact that damps and gasses can be inhaled with air. This can cause lung embolisms, especially during long-term exposure. Neodymium can be a threat to the liver when it accumulates in the human body.
What magnet is stronger than neodymium?
Iron Nitride Permanent Magnet Stronger than Neodymium Magnet The theoretical magnetic energy product for this iron nitride (Fe16N2) magnet is 130 mega gauss oersteds, which is more than twice the maximum reported magnet energy product for a rare-earth neodymium magnet.
What does N52 mean?
An N52 magnet is a neodymium magnet that contains an energy product or (BH)Max of 52MGOe (Mega-Gauss Oersteds). The “N52” is an abbreviation referring to the strength of this magnet.
Which is stronger N35 or N52 magnet?
An N52 magnet is approximately 50% stronger than an N35 magnet (52/35 = 1.49). In the US, it is typical to find consumer grade magnets in the N40 to N42 range. In volume production, N35 is often used if size and weight are not a major consideration as it is less expensive.
How many tesla is a neodymium magnet?
1.4 teslas
Dubbed the world’s strongest permanent magnet, neodymium magnets are magnets made of neodymium. To put their strength into perspective, they can produce magnetic fields with up to 1.4 teslas.
How strong are N52 magnets?
Grade N42 magnets have a Br of 13,200 Gauss, while N52 magnets can be as high as 14,800 Gauss.
How many Tesla is a neodymium magnet?
Is there a magnet stronger than neodymium?
What is the color of neodymium?
Neodymium. The color of neodymium compounds—due to the Nd 3+ ion—is often a reddish-purple but it changes with the type of lighting, due to the interaction of the sharp light absorption bands of neodymium with ambient light enriched with the sharp visible emission bands of mercury, trivalent europium or terbium.
What is the best reference book on neodymium elements?
“Neodymium. Elements”. CRC Handbook of Chemistry and Physics (97th ed.). CRC Press. p. 4.23. ISBN 9781498754293.
What does the N in neodymium numbers mean?
They all start with “N” which simply stands for “Neo” (industry simplification of Neodymium) and is followed by a two digit number This number represents the maximum energy product in Mega-Gauss Oersteds (MGOe) where 1MGOe (cgs units) equals 7958kJ/m3 (SI units).
What are neodymium-doped crystals?
Neodymium-doped crystals (typically Nd:YVO 4) generate high-powered infrared laser beams which are converted to green laser light in commercial DPSS hand-held lasers and laser pointers .