Since their introduction in the 1980s, sintered NdFeB permanent magnets have been widely used in automotive, wind power, aerospace, defense, and many other industries due to their outstanding magnetic performance. In recent years, rapidly growing demand from applications such as wind turbines and new energy vehicles has placed increasingly higher requirements on the coercivity and thermal stability of NdFeB magnets. Because the magnetocrystalline anisotropy field of the Dy₂Fe₁₄B phase is significantly higher than that of Nd₂Fe₁₄B, and its Curie temperature

The corrosion resistance of sintered NdFeB permanent magnets depends not only on the corrosion behavior of the base material itself, but also on the type of surface coating, coating thickness, and coating process used. The table below summarizes the typical exposure times at which corrosion may occur for sintered NdFeB samples under three common environmental test conditions. Within these specified test durations, the coating must not exhibit any visible defects such as blistering, peeling, rusting, or powdering. Slight color changes

Many customers ask EPI how much weight a magnet can lift. Online sources often claim that NdFeB magnets can lift objects weighing up to 600 times their own weight—but is this statement really accurate? Is there a calculation formula for magnet pull force? In this article, we take a closer look at what people commonly refer to as a magnet’s “pulling power.” In most magnet applications, magnetic flux or magnetic flux density is used to evaluate magnet performance—especially in motor

In our previous article, Effects of Heavy Rare Earth Elements (Dy, Tb, Gd, Ho) on Sintered NdFeB Magnet Properties, we discussed how heavy rare earth elements are used to enhance coercivity and high-temperature performance—often at the expense of cost and magnetic output. Building on that discussion, this article focuses on a different but equally important approach: substituting neodymium (Nd) and iron (Fe) with light rare earth elements and selected metallic additives. Elements such as La, Ce, and Pr, as well

As its name suggests, sintered NdFeB is an alloy material based on the compound Nd₂Fe₁₄B, which is formed from neodymium (Nd), iron (Fe), and boron (B). However, sintered NdFeB is not a single-phase material. Its microstructure consists of three main phases: the Nd₂Fe₁₄B phase, which is the primary and functional phase, a boron-rich phase (also known as the Nd₁.₁Fe₄B₄ phase), and a neodymium-rich phase, often referred to as the rare-earth-rich phase. Among these, the Nd₂Fe₁₄B phase dominates and serves as