The Most Widely Used Permanent Magnet Materials Used Today
Ceramic (ferrite) magnets are sintered permanent magnets, composed of Barium or Strontium Ferrite. Part of the rare-earth magnet family, ceramic magnets were developed in the 1960’s as an inexpensive alternative to metallic magnets and are now the most widely used permanent magnet materials used today.
Commonly referred to as “hard ferrite” magnets, ceramic (ferrite) magnets have a high resistance to demagnetization and oxidation, are relatively strong and very low cost compared to other permanent magnets. As a result, ceramic magnets are extensively used for a wide range of industrial, commercial and consumer applications.
Custom (Ferrite) Ceramic Magnets
Integrated Magnetics specializes in the technical design, engineering, manufacturing assembly and testing of custom ceramic (ferrite) magnets and precision magnetic assemblies. We routinely build technical magnetic assemblies, either as build-to-print or design-to-specification. We also stock a wide range of ceramic magnets in various grades, shapes and sizes which can be purchased online at Magnetshop.com. Send us a request for quote or contact us today to discuss your project’s specialty requirements.
Ceramic (Ferrite) Magnet Applications
Ceramic (Ferrite) magnets are hard, brittle and have lower coercivity than some of the other permanent magnet materials, however, because of their low cost and high-resistance to demagnetization and oxidation, they are a popular choice for numerous industrial, commercial and consumer applications. They are routinely used in DC brushless and permanent magnet motors, alternators and generators, for security systems, lifting and holding applications, POP displays, commercial signage, magnetic separators, magnetic resonance imaging, automotive sensors, and countless other applications. We are trusted partners to businesses worldwide in these primary industries.
Ceramic Magnet Design, Engineering & Manufacturing
• Technical Magnet Design & Engineering - Our core expertise is in the technical design, engineering and custom fabrication of samarium cobalt magnets and magnetic assemblies, from prototypes to small and medium production runs.
• In-House Production Facilities - Our fully equipped in-house manufacturing & production facilities and dedicated assembly areas with class 1000 cleanrooms, enable us to provide complete turnkey solutions with shorter lead times, increased quality at all levels and at reduced costs.
• Quality Planning & Assurance - We provide a full range of inspection and testing services, using state-of-the art equipment to ensure that all of our delivered products adhere to rigid industry standards. And we have a well-established QMS that continuously evolves in order to meet or exceed our clients’ expectations.
• Licenses & Certifications - As a fully licensed and certified magnet manufacturer, we are ISO:9001:2015 certified, ITAR registered, ROHS3, and REACH compliant. Click here to view the full range of our certifications & compliances.
Your Custom Ceramic Magnet Project - How Can We Help?
For optimal magnet performance, it's important to work with an experienced magnet engineering and manufacturing team; Integrated Magnetics has over 60 years of accumulated knowledge and expertise in this specialty arena. We are able to fully engineer ceramic magnets, magnetic components and assemblies to your exact specifications using sophisticated FEA tools with magnetics, thermal and stress analysis. Contact us today or send us a request a quote to discuss your project’s specific requirements.
Ceramic (Ferrite) Magnets Features & Characteristics
- Grades & Materials - We carry a large inventory of licensed, ceramic (ferrite) magnet materials in standard and premium grades for reduced production and lead times. We offer sintered Ceramic magnets in grades that range from 1.1 MGOe to 4.5 MGOe. Visit our Ceramic magnet materials page for additional information and for data sheets about this material.
- Sizes & Shapes - Standard ceramic (ferrite) magnet shapes include discs, blocks, rings, and arc segments in a variety of sizes and grades. Non-standard shapes can also be custom fabricated to blueprint specifications from raw stock. We can custom manufacture ceramic (ferrite) magnets in virtually any shape and size to meet your project’s exact requirements.
- Temperature Considerations - Properties for ceramic magnets degrade linearly with temperature. At 350°F (177°C), about 75% of room temperature magnetization is retained, and at 550°F (288°C), about 50% is retained.
- Manufacturing Methods - Ceramic magnets are extremely brittle, so they are prone to chipping and cracking. Therefore, special machining techniques involving diamond-grinding must be used to machine this material prior to magnetization. We are fully equipped to machine these materials to your project’s specialty requirements.Visit our ceramic magnet materials page for more detailed information on ceramic machining techniques.
- Surface Treatments - The corrosion resistance of Ceramic (Ferrite) is excellent, therefore special coatings to prevent corrosion or oxidation are not required.
- Magnetizing & Assembly Considerations - Ceramic magnets are anisotropic, and can only be magnetized in the orientation direction. Magnetizing fields in excess of 50 kOe are required to saturate these materials.
- Handling & Storage - Ceramic (Ferrite) magnets are very hard and brittle and will shatter if dropped. Therefore, special care must be taken when handling these magnets to avoid injury to personnel and damage to the magnets.