SOFT MAGNETIC-MATERIALS FOR AC APPLICATIONS
SOFT MAGNETIC-MATERIALS FOR AC APPLICATIONS
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DOI：
10.1179/pom.1992.35.1.63
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发表时间：
1992-01-01
影响因子：
1.4
通讯作者：
JANSSON, P
中科院分区：
文献类型：
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作者：
JANSSON, P
用于交流应用的软磁材料让人想起了通常用于生产组件的熟悉的Fe、Fe-Si和Fe-Ni合金。由于PM软磁部件的各向同性性质，诸如堆叠和片材厚度的设计因素不适合于减少总损耗，应用的成功取决于部件的形状和尺寸以及材料特性。Fe-Si和Fe-Ni合金粉末冶金零件的生产是当今的工业过程，其中磁性能通过明确定义的工艺参数（例如压实压力、烧结时间和烧结温度）来定制。然而，PM工艺允许使用超出传统软磁材料范围的合金元素和系统。一个常见的例子是Fe-P合金软磁材料，其中添加0.8%的P会产生各向同性部分，无需形状或尺寸调整即可等效于板厚0.65 mm的纯Fe堆。P的添加不仅增强了软磁性能纯Fe的性能，而且还增强了Fe-Si合金的性能。将PM可用的材料范围扩展到包括Fe-Si-P和Fe-P-Sn，增加了选择磁和电性能组合、PM工艺能力和总生产成本的灵活性。各种工艺参数对Fe-Si-P和Fe-P-Sn的磁性能的影响被示出，作为这些材料与常规合金相比用于解决特定工艺或成本问题的优点的例子。
Soft magnetic materials for ac applications call to mind the familiar Fe, Fe-Si, and Fe-Ni alloys commonly used for the production of components. Due to the isotropic nature of PM soft magnetic parts, design factors such as stacking and sheet thickness are not appropriate for the reduction of total losses, The success of the application is dependent on the shape and size of the part and the material properties. The production of Fe-Si and Fe-Ni alloyed PM parts is today an industrial process in which the magnetic properties are tailored by well defined process parameters such as compaction pressure, sintering time, and sintering temperature. However, the PM process permits the use of alloying elements and systems beyond the sphere of traditional soft magnetic materials. A common example is Fe-P alloyed soft magnetic materials where an addition of 0.8% P results in an isotropic part which without either shape or size adjustment is equivalent to a pure Fe stack of sheet thickness 0.65 mm. The addition of P enhances not only the soft magnetic properties of pure Fe but also those of the Fe-Si alloys. The extension of the material range available to PM to include both Fe-Si-P and Fe-P-Sn increases the flexibility of choice of magnetic and electrical properties combinations, PM process capacity, and total production costs. The effect of various process parameters on the magnetic properties of both Fe-Si-P and Fe-P-Sn are shown, as are examples of the advantages of these materials compared with conventional alloys for the solution of specific process or cost problems.