Ferrite magnets are a widely used type of permanent magnet with unique physical properties. This paper focuses on the hardness and brittleness characteristics of ferrite magnets and explores the key considerations during their processing. By understanding these properties, manufacturers can optimize the processing techniques to produce high - quality ferrite magnets for various applications.

AlNiCo (aluminum-nickel-cobalt) magnets, once the cornerstone of permanent magnet technology, now face unprecedented substitution pressure from emerging materials. This paper systematically analyzes the limitations of AlNiCo magnets in cost, performance, and application scenarios, and explores the replacement potential of five emerging magnetic materials: high-temperature superconductors, Mn-Al alloys, fourth-generation rare-earth magnets, FeCrCo alloys, and altermagnets. Through comparative analysis of magnetic properties, cost structures, and industrialization progress, it reveals that high-temperature superconductors and Mn-Al alloys are most likely to achieve large-scale substitution in the medium to long term, while fourth-generation rare-earth magnets and FeCrCo alloys will compete in niche markets. The paper concludes with strategic recommendations for the magnetic material industry to navigate this transformative period.

When selecting between AlNiCo (aluminum-nickel-cobalt) and NdFeB (neodymium-iron-boron) magnets, engineers and designers must evaluate multiple factors, including operating temperature, magnetic stability, cost, corrosion resistance, and application-specific requirements. While NdFeB magnets are renowned for their exceptional magnetic strength, AlNiCo magnets offer distinct advantages in certain scenarios. Below is a detailed analysis of the circumstances under which one would choose an AlNiCo magnet over an NdFeB magnet.

The cost advantage of AlNiCo magnets compared to NdFeB magnets lies in their lower raw material costs, greater availability, and suitability for applications where extreme magnetic strength is not required, offsetting their lower magnetic performance with economic and practical benefits in specific contexts.

1. Recycling Difficulty of AlNiCo Magnets
The recycling of AlNiCo magnets presents a unique set of challenges rooted in material composition, contamination risks, and technical separation requirements. However, these challenges are not insurmountable, and advancements in recycling technologies are steadily improving feasibility.

Yes, AlNiCo magnets can be remagnetized after demagnetization, and the process typically requires specialized equipment such as high-current pulse chargers or capacitive discharge devices.

AlNiCo (Aluminum-Nickel-Cobalt) magnets are renowned for their exceptional thermal stability and corrosion resistance, making them indispensable in high-temperature and harsh-environment applications such as aerospace, automotive sensors, and industrial instrumentation. However, like all permanent magnets, AlNiCo magnets are not immune to long-term degradation of magnetic properties under certain conditions. This article explores the mechanisms of degradation, influencing factors, and practical prevention strategies to ensure the longevity of AlNiCo magnets.

To enhance the coercivity of AlNiCo magnets and reduce the risk of demagnetization, a multifaceted approach focusing on composition optimization, processing refinement, and structural control is essential. Below is a detailed technical analysis of key strategies:

AlNiCo (Aluminum-Nickel-Cobalt) magnets are a class of permanent magnets known for their excellent temperature stability, high remanence, and relatively good corrosion resistance. While they are often manufactured in specific shapes during the casting or sintering process, there are instances where mechanical processing such as cutting and drilling is required to achieve the desired final dimensions or features. This article explores the feasibility of modifying AlNiCo magnets through mechanical processing, discusses the potential challenges and risks involved, and provides detailed guidelines on best practices to ensure successful and safe processing.

Controlling the magnetic properties of AlNiCo (Aluminum-Nickel-Cobalt) magnets during manufacturing is a meticulous process that hinges on precise control over composition, microstructure, and heat treatment. Below is a detailed exploration of the key factors and techniques involved in optimizing the magnetic performance of AlNiCo magnets:

AlNiCo (Aluminum-Nickel-Cobalt) magnets, developed in the late 1930s, have been pivotal in aerospace, military, and industrial applications due to their exceptional thermal stability, corrosion resistance, and magnetic field sustainability. The manufacturing of AlNiCo magnets involves two primary methods: casting and sintering. This article explores the traditional and modern techniques used in producing AlNiCo magnets, highlighting their differences, advantages, and applications.

Introduction
AlNiCo (Aluminum-Nickel-Cobalt) magnets, developed in the early 1930s, have played a pivotal role in both aerospace and military technologies. Despite the emergence of stronger rare-earth magnets in the latter half of the 20th century, AlNiCo magnets remain indispensable in critical applications due to their unique combination of properties. This article explores the advantages of AlNiCo magnets in aerospace and military fields, focusing on their thermal stability, corrosion resistance, magnetic field sustainability, and adaptability to harsh environments.