Recent work at Birmingham has shown that the use of a low-pressure pack sublimation (LPPS) process produces Zn-coatings on Nd-Fe-B magnets, which result in dramatic improvements in corrosion resistance. In the present work we have studied the microstructures of the LPPS coatings and their effects on the magnetic properties of the magnets. It was found that the coating process had a small detrimental effect upon the magnetic properties of the magnets. For example, in one case, production of a 12mum LPPS Zn coating led to a decrease of approx 3 percent in both coercivity and remanence.
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