R-T-B BASED PERMANENT MAGNET

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Inventor(s)

R-T-B BASED PERMANENT MAGNET - A simplified explanation of the abstract

This abstract first appeared for US patent application 18610601 titled 'R-T-B BASED PERMANENT MAGNET

The abstract describes a patent application for an R-T-B based permanent magnet with a heavy rare earth element content of 0.30 mass % or less.

The R-T-B based permanent magnet includes rare earth elements, Fe, Co, Al, Zr, Ga, B, and C within predetermined ranges.
The magnet can also include main phase grains with an RTB type crystal structure and concentrated portions in the grain boundaries.

Potential Applications: - Electric motors - Generators - Magnetic resonance imaging (MRI) machines

Problems Solved: - Reducing the heavy rare earth element content in permanent magnets - Improving the performance and efficiency of magnetic devices

Benefits: - Lower cost due to reduced rare earth element content - Enhanced magnetic properties - Increased sustainability in manufacturing processes

Commercial Applications: - Automotive industry for electric vehicles - Electronics industry for consumer electronics - Renewable energy sector for wind turbines

Questions about R-T-B based permanent magnets: 1. How does the heavy rare earth element content affect the performance of the magnet?

  - The heavy rare earth element content can impact the magnetic properties and cost of the magnet.

2. What are the main advantages of using R-T-B based permanent magnets in comparison to other types?

  - R-T-B based permanent magnets offer high magnetic strength and stability, making them ideal for various applications.

Original Abstract Submitted

An R-T-B based permanent magnet has a heavy rare earth element content of 0.30 mass % or less excluding 0 mass %. The R-T-B based permanent magnet is either an R-T-B based permanent magnet including at least a rare earth element, Fe, Co, Al, Zr, Ga, B, and C within predetermined ranges; or an R-T-B based permanent magnet including main phase grains including crystal grains having an RTB type crystal structure and a grain boundary between two or more of the main phase grains adjacent to each other, having an R—Fe—Co—Ga—Al concentrated portion in the grain boundary.