【摘 要】
：
Based on IEC standards and Chinese national standards of sintered NdFeB materials, in the paper the hightemperature, room-temperature properties and thermal sta
【机 构】
：
Research Institute of special Electrical Machine
论文部分内容阅读
Based on IEC standards and Chinese national standards of sintered NdFeB materials, in the paper the hightemperature, room-temperature properties and thermal stability of about one hundred samples of NdFeB materials for electrical machines were measured and analyzed.These materials are produced by ten representative manufactories in China.Combined with the analysis results, the paper points out that the magnetic properties of sintered NdFeB materials for electrical machines should meet not only the specific values in standards, such as Br, (BH)max ,HcJ ,but also the requirement of temperature coefficients a (Br) , a (HcJ).
其他文献
The influence of dispersants and decentralization condition on rheological properties and gelcasting of BNA12O3-Y2 O3 slurry was discussed, and the thermodynami
By means of surface mechanical attrition (SMA), a nanostructured surface layer was formed on a 0Cr18Ni9Ti austenite stainless steel plate. A strain-induced mart
The multilayer gradient CrN/ZrN coatings were synthesized by a dual cathode DC magnetron sputtering.The influence of different species of reaction gases and par
Through eliminating voids not affecting the primary bonding process, and incorporating interlayer and flexible base material, the interface geometry character a
Fe-Al/WC intermetallic composite coatings were prepared by high velocity arc spraying (HVAS) technology on 20G steel and the oxidation performance of Fe-Al/WC c
SiCp/Sialon ceramic manix composites were fabricated by pressureless sintering method using the Sialon powder synthesized from the kaolin clay and submicron SiC
The effect of addition of A1 on crystal structure microtexture and magnetostrictioncoefficient in Tb0.3Dy0.7Fe1.95 alloy were studied.The results show that addi
Modified sensing membranes based on fluorescence quenching were prepared by the sol-gel meth-od, using formamide as the drying control chemical additive, tetrae
Nanoparticle reinforced nickel matrix composite coatings, such as n-Al2O3/Ni, n-SiO2/Ni, n-SiC/Ni and n-TiO2/Ni, were fabricated by brush plating technique. Har
Using Mo, B-Fe alloy and Fe powders as raw materials, and adding C, Cr and Ni ingredients, respectively, or C, Cr and Ni mixed powders, ternary boride hard allo