"Song Zhenlun introduced that physical vapor deposition combined with grain boundary diffusion technology can increase the coercivity of sintered NdFeB permanent magnet products (average 2-3 grades) while reducing the amount of heavy rare earth addition by 60%."
http://newmat.chinaiol.com/xtcl/s/1218/14205474.html
While NTU and its pet commentators desperately try and maintain the spin, the Chinese mag makers just keep on developing the techniques to delete it.
Yet a further 60% HRE deletion by China
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