A　newly　developed　rotational　coating　process　has　been　used　to　coat　Nd-Fe-B　flake-shape　powders　with　Zn.　A　uniform　layer　of　Zn　as　thin　as　1.5　μm　can　be　coated　on　the　Nd-Fe-B　powders　under　a　proper　rotational　coating　condition.　The　coercivity　decreases　by　about　4.23%　and　magnetization　decrease　by　only　1.64%　after　Zn　coating.　The　antioxidation,　on　the　other　hand,　is　greatly　improved.　The　large　mass　increase　during　oxidation　starts　at　400　°C　for　the　Zn-coated　powders,　150　°C　higher　than　that　of　the　uncoated　powders.　In　addition,　during　the　high-temperature　oxidation　experiment　from　30　°C　to　450　°C,　the　mass　of　uncoated　powders　increases　by　2.82%,　while　the　mass　of　Zn-coated　powders　only　increases　by　0.40%.　These　results　prove　that　the　rotational　coating　is　a　very　effective　way　to　enhance　the　oxidation　resistance　of　Nd-Fe-B　powders,　owing　to　the　high-quality　coating　layer　and　its　good　isolation　ability　for　the　matrix.　The　process　is　also　low-cost　and　easy　to　achieve　mass　production,　making　it　a　promising　technique　for　producing　high-performance　Nd-Fe-B　powders.　©　2023