질화철 자석

질화철 자석과 네오디뮴: 네오디뮴보다 더 강한 자석은 무엇인가요?

네오디뮴 자석은 시중에서 가장 강력한 영구 자석으로 여겨져 수십 년 동안 가장 많이 사용되어 왔습니다. 하지만 최근의 연구는 더 강력한 대안인 질화철 영구 자석을 개발하는 것을 목표로 하고 있습니다. 이 글에서는 네오디뮴 자석과 비교한 질화철 자석의 특성과 장점(질화철 자석 대 네오디뮴)에 대해 알아보고자 합니다.

What Magnet is Stronger Than Neodymium? Iron Nitride Magnets!

What Magnet is Stronger Than Neodymium?

Iron Nitride Permanent Magnets

Scientists have successfully designed a process that generates iron nitride permanent magnets in bulk form, enabling various applications. Previously, only powders or thin films were produced, limiting their use. The magnetic energy property of iron nitride is reported to be more than twice that of neodymium, the strongest type of rare earth magnet available. This makes iron nitride permanent magnets much stronger than rare earth magnets, having a theoretical magnetic energy product of 130 mega gauss oersteds.

Iron Nitride Permanent Magnets: A Breakthrough in Magnet Technology

For more than te­n years, iron and nitrogen have be­en the subject of e­xtensive expe­rimentation by scientists and rese­archers to create­ a magnet stronger than neodymium. Initially, the­ir attempts only yielded unsuitable­ thin films or powders for many applications. However, whe­n they employe­d a fabrication process to produce bulk forms of these­ magnets, a wide range of possibilitie­s opened up for their use­.

Iron Nitride Magnets vs Neodymium

강도

The magnetic energy property of iron nitride is reported to be more than twice that of neodymium, the strongest type of rare earth magnet available. This makes iron nitride permanent magnets much stronger than rare earth magnets, having a theoretical magnetic energy product of 130 mega gauss oersteds.

Coercivity

The coercivity of iron nitride magnets is less than that of neodymium. Coercivity is a measure of a magnet’s ability to resist becoming demagnetized.

Material costs

The main components of Iron nitride magnets are iron and nitrogen, and the cost of raw materials is much lower than that of rare earth magnets.

Production Process

The production process of iron nitride magnets is more complicated. Several kinds of iron nitrides that can form magnetism are unstable, are in an unstable state from a chemical point of view, and can easily transform into other substances or other states. Moreover, iron nitride requires a high ratio of iron and nitrogen, and a large error will affect the magnetic properties.

Commercial availability

네오디뮴 자석 already have a very mature industrial chain, while Iron nitride permanent magnets are still in the early stages of development. Mass production of finished iron nitride magnets is an even greater challenge at this stage.

Environmentally Friendly

Iron nitride magnets are more friendly to the environment. They offer a greener alternative by utilizing common elements without depleting scarce resources(like rare earth).

Benefits And Features Of Iron Nitride Magnets

  1. No Rare-Earth Inputs: Unlike neodymium magnets that rely on rare-earth materials, iron nitride magnets utilize low-cost and readily available nitrogen and iron inputs. This reduces production costs significantly.
  2. Environmentally Friendly: The extraction of rare earth minerals for neodymium magnets has raised concerns about environmental damage. Iron nitride magnets offer a greener alternative by utilizing common elements without depleting scarce resources.
  3. Compatible with Mass Production Techniques: The fabrication process used for iron nitride magnets is highly compatible with existing mass production techniques. This means that large-scale manufacturing can be achieved efficiently.
  4. Wide Range of High-Tech Applications: Iron nitride permanent magnets are suitable for various high-tech applications such as electronics, wind turbines, and electric motors. Their superior magnetic properties make them ideal for demanding environments requiring strong magnetic fields.
  5. Unprecedented Magnetic Properties: The theoretical limit of the magnetic properties of iron nitride magnets exceeds twice the maximum reported magnetic energy of rare earth magnets. This means that iron nitride magnets have the potential to outperform neodymium magnets in terms of magnetic strength.

결론

Iron nitride permanent magnet research has shown promising results in creating a magnet stronger than neodymium while addressing rare-earth materials and environmental impact concerns. Although still in the developmental phase, iron nitride magnets offer exciting potential for revolutionizing various high-tech applications. As ongoing research continues to overcome production challenges, we can look forward to a future where these powerful magnets become more readily available.

자주 묻는 질문

Are iron nitride permanent magnets commercially available?

No, iron nitride permanent magnets are still in the developmental phase, and mass-production technology is yet to be fully established. As a result, it is challenging to find suppliers for these magnets, even in powder form.

Can any country produce iron nitride permanent magnets?

Due to their production’s complexity and technical requirements, only a few countries can produce even the powder form of these magnets. Mass production of finished iron nitride magnets is an even greater challenge at this stage.

What are the main challenges in producing iron nitride permanent magnets?

The main challenges include inventing mass-production technology for iron nitride powder, reducing interface defects and dimensional deviation, improving coercivity through element substitution, and aligning and solidifying nanometer-sized iron nitride powder.

What is the future outlook for iron nitride permanent magnets?

With ongoing research and development efforts, it is anticipated that advancements will be made in mass-production technologies for iron nitride permanent magnets. Once this happens, we can expect an exciting future where these stronger alternatives become more accessible across different industries.

Are there alternative options to neodymium and iron nitride magnets?

While neodymium remains the strongest commercially available magnet, alternative materials such as samarium-cobalt (SmCo) and ceramic ferrite magnets can be substitutes depending on specific application requirements.

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