To investigate the effect of adding microfiber glass on the magnetic and mechanic properties of anisotropic Nd-Fe-B magnets, the Nd-Fe-B magnets with epoxy resin lubricant were prepared by calendering and magnetic ali...To investigate the effect of adding microfiber glass on the magnetic and mechanic properties of anisotropic Nd-Fe-B magnets, the Nd-Fe-B magnets with epoxy resin lubricant were prepared by calendering and magnetic alignment steps with heating. The effect of heating during magnetic alignment process on magnetic and mechanic properties of the prepared Nd-Fe-B magnets was investigated and optimized. As a result, heating unaligned flexible bonded magnets to 100 °C for 30 min during magnetic alignment resulted in the largest (BH)_(max), which increased to over 61.5% with DOA increasing and to over 38% compared with unaligned Nd-Fe-B magnets prepared by one step method.展开更多
In order to develop a novel electric light source, the doped high-silica glass was studied on the preparation and spectroscopic properties. ne porous glasses were made firstly and were then immersed in the solution co...In order to develop a novel electric light source, the doped high-silica glass was studied on the preparation and spectroscopic properties. ne porous glasses were made firstly and were then immersed in the solution containing Ce ion. Thereafter, the high-silica glasses containing Ce ion were prepared by sintering the porous preform. The spectroscopic properties were studied before and after heath treatment in H-2. The experimental results indicate that the suitable temperature schedules are the most important to prepare doped high-silica glass. The study of the spectra shows that Ce ion can be reduced to low valence state when it is heat-treated in H-2. It can be used to adjust the UV cut-off wavelength of high-silica glass by changing the valence state of Ce ion.展开更多
文摘To investigate the effect of adding microfiber glass on the magnetic and mechanic properties of anisotropic Nd-Fe-B magnets, the Nd-Fe-B magnets with epoxy resin lubricant were prepared by calendering and magnetic alignment steps with heating. The effect of heating during magnetic alignment process on magnetic and mechanic properties of the prepared Nd-Fe-B magnets was investigated and optimized. As a result, heating unaligned flexible bonded magnets to 100 °C for 30 min during magnetic alignment resulted in the largest (BH)_(max), which increased to over 61.5% with DOA increasing and to over 38% compared with unaligned Nd-Fe-B magnets prepared by one step method.
文摘In order to develop a novel electric light source, the doped high-silica glass was studied on the preparation and spectroscopic properties. ne porous glasses were made firstly and were then immersed in the solution containing Ce ion. Thereafter, the high-silica glasses containing Ce ion were prepared by sintering the porous preform. The spectroscopic properties were studied before and after heath treatment in H-2. The experimental results indicate that the suitable temperature schedules are the most important to prepare doped high-silica glass. The study of the spectra shows that Ce ion can be reduced to low valence state when it is heat-treated in H-2. It can be used to adjust the UV cut-off wavelength of high-silica glass by changing the valence state of Ce ion.
