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 influences of silane coupling treatment, binder content, high magnetic field, compaction process and thermosetting technology on the microstructure and properties of bonded Nd-Fe-B magnets were studied by the analysis of DSC, SEM, bending strength, compressive strength and MATS-2010 Permanent Magnet Test.

Acidic electroless Ni-P plating on sintered Nd-Fe-B magnet;

Study on the New Machining Technology and Mechanism of Sintered Nd-Fe-B Magnet;

Grinding of Sintered Nd-Fe-B Magnet and Study on Computer Simulation Technology;

A new method for evaluating the alignment degree of sintered Nd-Fe-B magnets quantitatively by X -ray diffraction measure-ments was Proposed, and the results were compared with Br/Js and (Br// -Br)/Br// measured by pulse magnetic field greater than 10T.