A Study of Sintered Nd-Fe-B magnet coated by DyAI layer
A DyAl layer has been deposited on sintered Nd-Fe-B magnet surface by DC sputtering method. The magnets coated by DyAl layer were processed heating treatment. Magnetic properties, resistance of corrosion and microstructures of the annealed samples have been investigated. The results show that the magnetic properties of the samples can be improved because the Dy and Al elements are diffused into the magnet. The press cooker test (PCT) and spray salt test (SST) shows that the corrosion resistance and magnetic loss resistance have been obviously improved. The microstructure observation reveals that the Dy and Al element diffusion optimizes distribution of Dy and Al in the sample, and is responsibility for the improvements of magnetic properties and protecting corrosion.
Sputtering DyAl layer sintered Nd-Fe-B thermal diffusion
SUN Bao-yu BA De-chun FANG Ye DUAN Yong-li YUE Xiang-ji YANG Bin
School of Mechanical Engineering & Automation,Northeastern University,Shenyang,110004 School of Mechanical Engineering & Automation, Northeastern University,Shenyang,110004 ULVAC Vacuum Furnace (Shenyang) Co.,Ltd.,Shenyang,110168 School of Mechanical Engineering & Automation,Northeastern University, Shenyang, 110004 Shenyang General Magnets Co.,Ltd.,Shenyang,110168
国际会议
沈阳
英文
3-7
2011-05-22（万方平台首次上网日期，不代表论文的发表时间）