What is Magnetic Flux (Φ)? In the application of magnets, Magnetic Flux (Φ) is an important index to measure the performance of magnets, especially in the fields of motors, audio speakers, and so on. So what is Magnetic Flux (Φ)? In this article, we will try to answer this question. The Concept of Magnetic Flux (Φ)
Cornerstone Articles Archives | Stanford Magnets
September 18, 2020
September 16, 2020
Surface Treatment of NdFeB Magnets – Phosphating
Surface Treatment of NdFeB Magnets – Phosphating As we all know, sintered NdFeB magnets are easily oxidized and corroded, so strict anti-corrosion treatment must be carried out before use. In our last articles, we’ve introduced the methods of NdFeB magnets surface treatment, like electrophoresis and passivation. So in today’s article, let’s take a look at the other method of surface
September 15, 2020
Permanent Magnets in Magnetic Resonance Equipment
Permanent Magnets in Magnetic Resonance Equipment In our last articles, we’ve introduced permanent magnets in the electric power steering system (EPS), and permanent magnets used in magnetic separators, so in today’s article, let’s take a look at the permanent magnets in magnetic resonance equipment. Nuclear Magnetic Resonance (NMR) is a nuclear physical phenomenon. As early as
September 11, 2020
What is Remanence (Br)?
What is Remanence (Br)? There are four main indicators for measuring the performance of permanent magnets: remanence (Br), coercivity, intrinsic coercivity, and maximum magnetic energy product. In our last article, we’ve introduced what is maximum magnetic energy product, so in today’s article, we’ll take a look at what is remanence (Br). The Concept of Remanence (Br)
September 9, 2020
What is Maximum Energy Product (BH)max?
What is the Maximum Energy Product (BH)max? There are four main indicators for measuring the performance of permanent magnets: remanence, coercivity, intrinsic coercivity, and maximum energy product (BH)max. In the following posts, we will introduce these concepts and their applications one by one. In today’s article, let’s take a look at the maximum energy product
September 4, 2020
A Brief Introduction to Neodymium Magnets (NdFeB)
A Brief Introduction to Neodymium Magnets (NdFeB) In our last article, we’ve briefly introduced the Ferrite Magnet, and in this article, we’ll give a brief introduction to Neodymium Magnet (NdFeB). The NdFeB magnet is the strongest permanent magnet in the world. It is a tetragonal crystal formed of neodymium, iron, and boron. This kind of magnet is the most commonly used
September 3, 2020
A Brief Introduction to Ferrite Magnets
A Brief Introduction to Ferrite Magnets Compared with other permanent magnets like Neodymium Magnets, SmCo Magnets, and AlNiCo Magnets, Ferrite Magnets are hard and brittle and have lower magnetic energy. However, they are not easy to demagnetize and to be corroded, and the production process is simple and low in price. Therefore, ferrite magnets have the
September 1, 2020
Surface Treatment of NdFeB Magnets – Passivation
Surface Treatment of NdFeB Magnets – Passivation In order to improve the corrosion resistance of NdFeB magnets, it is usually necessary to treat the surface of NdFeB magnets. Common surface treatment methods for NdFeB magnets include phosphating, electroplating, electrophoresis, and vapor deposition. In our last article, we’ve introduced the electrophoresis, so in this article, we will introduce
August 28, 2020
Surface Treatment of NdFeB Magnets – Electrophoresis
Surface Treatment of NdFeB Magnets – Electrophoresis There are many methods for the surface treatment of NdFeB magnets, such as electroplating, phosphating, and electrophoresis. Among them, the electrophoresis one of the anti-corrosion surface treatment technologies widely used in sintered NdFeB and bonded NdFeB permanent magnets. Before going any further, let’s figure out what’s electrophoresis first. What is electrophoresis?
August 21, 2020
AlNiCo Magnet 101
AlNiCo Magnet 101 Developed in the 1930s, AlNiCo Magnet is the earliest developed permanent magnet material in history. It is an alloy composed of aluminum, nickel, cobalt, iron, and other trace metal elements. Prior to the discovery of rare earth permanent magnets in the 1970s, AlNiCo alloy was the strongest permanent magnet. However, with the advent