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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials; 20060704-08; Vancouver(CA) >HIGH PERFORMANCE SOFT MAGNETIC COMPOSITE (SMC) PRODUCED BY IMPROVED PROCESS
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HIGH PERFORMANCE SOFT MAGNETIC COMPOSITE (SMC) PRODUCED BY IMPROVED PROCESS

机译：改进工艺生产的高性能软磁复合材料（SMC）

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Soft magnetic composites (SMC's) are produced compacting iron powder coated with a thin insulator and then heat-treating the greens. In this study, to improve magnetic properties of SMC's, formation of heat resistant MgO insulation layer on iron powder particles was examined. It was found that the MgO coating can be made by a dry process with two steps, i.e., oxidation of the iron particle surfaces and reduction of iron oxide by magnesium vapor. The SMC fabricated from the MgO-coated powder exhibits high resistivity even after heat treatment at 600℃, which leads to low iron losses comparable to those of the as-punched silicon-iron laminations. This can be ascribed to complete relief of stress introduced in the compaction process.
机译：生产软磁复合材料（SMC），将铁粉压制成薄的绝缘体，然后对生坯进行热处理。在这项研究中，为了改善SMC的磁性能，研究了在铁粉颗粒上形成耐热MgO绝缘层的方法。业已发现，MgO涂层可以通过干法工艺制造，该工艺分为两个步骤，即，铁颗粒表面的氧化和镁蒸气对氧化铁的还原。由MgO涂层粉末制成的SMC即使在600℃热处理后仍显示出高电阻率，与冲切的硅铁叠层相比，其铁损较低。这可以归因于完全减轻压实过程中引入的应力。

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