As a group of widely used functional materials,stability of sintered Nd-Fe-B based magnet needs focused research,and its temperature and chemistry stability is discussed in this paper.

Associated with the mass-production of sintered Nd-Fe-B magnets currently in China, an investigation is presented in this paper of the impact of compact density on microstructure and magnetic properties of sintered Nd-Fe-B magnets.

Epoxy resin coatings with different KH-550 silane concentration on sintered Nd-Fe-B magnets were formed by rendering and blending method.

Using modified conventional powder metallurgy process for sintered Nd-Fe-B magnets, including annealing of ingot alloy, hydrogen decrepitating, modified jet mill and adding additive during jet milling, we have mass-produced high performance and high corrosion resistance sintered Nd-Fe-B magnets from a conventional ingot alloy without strict protections against oxidation.

The effects of pre-plating in ultrasonic field on the adhesion of electroless Ni-P coatings to sintered Nd-Fe-B magnets were investigated.

Ni-P coatings were deposited on sintered Nd-Fe-B magnets through the addition of Nd3+ in the electroless plating solution.

The turning mechanism of sintered Nd-Fe-B permanent magnetic material was investigated experimentally.