One of the popular magnets used in magnetic jewellery is Ceramic Ferrite mixed with Strontium Carbonate. Most manufacturers of magnetic jewellery do not disclose what kind of Ceramic Ferrite mixture they are using. It is your watch out to find out this part of the story. Read for more details…
Ceramic Ferrite is simply mixture of ceramic clay along with Iron powder and either of Barium Carbonate or Strontium Carbonate. In this blog I am talking about Ceramic Ferrite made with Strontium Carbonate as a constituent alloy. The technical script for this Strontium mixed magnet is given as Sr Fe 12 O 19. Here are major salients of Ceramic Ferrite mixed with Strontium Carbonate:
1. Ceramic Ferrite with Strontium is easy to manufacture in various shapes and different sizes. Some of the shapes include round, square, rectangle, arc, triangle, horseshoe and so on. It can be subjected to multi type production processes including sintering, pressing and injection moulding. In gem & jewellery industry sintered one is very popular.
2. Gem & jewellery industry chooses this magnet as it can be mounted easily on jewellery wears such as bracelet, wrist band and wrap where it snugs in even the minute jewellery.
3. Although this magnet is brittle it is the choice of many for its inherent hardness which is measured in Mohs scale at 7 point and for the excellent anti-corrosion capability. Consequently no coating or plating is required. A major negative is the lower mechanical strength that forbids filigree type designs. In any case such designs are not needed in magnetic jewellery.
4. Price wise Ceramic Ferrite with Strontium is inexpensive due to several factors. Easy manufacturing process apart, the major raw material Strontium is cheap, abundant and a non-strategic material helping keep the prices tag within reach of many buyers.
5. As Ceramic Ferrite with Strontium has lowest magnetic flux density among the type of magnets its use is fairly restricted to magnetic jewellery where the required Gauss strength is 1,500 or less.
6. Ceramic Ferrite with Strontium is a permanent magnet with longevity. Moreover, it has fairly higher resistance to external magnetizing fields. This we call as Coercive Magnetic Field Strength. There is an option to have this magnet as soft and hard ones. The soft Ferrite has somewhat lower Coercive magnetic field Strength than the hard one. If you walk through highly magnetised environment your magnetic jewellery made of Ceramic Ferrite with Strontium might suffer loss of magnetism depending on whether it is soft or hard ferrite and the level of ambient magnetic force surrounding you.
7. This magnet variety has higher operating temperature capability. Maximum operating temperature of 300 degree Celsius means this magnet can be easily used in various types of jewellery. However, at operating temperature of 460 degree Celsius it would lose magnetic strength altogether.
8. One of the key pull factors of strontium mixed Ceramic Ferrite is that it stops pain signals travelling towards the brain. As a bio-compatible magnet it is harmless to plants, animals and human being. Another pull factor is that it resists weather and invasive chemicals and solvents. When you use Strontium mixed Ceramic Ferrite you get refinement, iridescence and luminous aura around you. You get physical strength reverberating in your bones and muscles; mental alertness cascading in your thoughts and actions. Lot depends on your personal cosmics and equally your liking of the Strontium mixed magnetic jewellery. Wise geek must do an assessment of personal cosmics before selecting magnetic jewellery decked with Strontium mixed Ceramic Ferrite.
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