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- Title
MIM プロセスによって作製した高硬度 Fe-Cr-Si 系軟磁性材料の磁気特性および機械的性質.
- Authors
木村 正宏; 清水 透; 渡利 久規
- Abstract
An electronic fuel injection system of automobiles have been commercialized at the end of 1960’s, they have been adopted as environmental measures for many automobiles and motorcycles. In recent years, metal injection molding (MIM) has been adopted as a process for manufacturing a solenoid valve which is a component of an electronic fuel injector, and PB permalloy components have been commercialized. However, Ni, an element of PB permalloy, is expensive material, making it difficult to produce the fuel injector component at a low cost. As a solution to this problem, we studied the magnetic and material properties of Fe-Cr-Si and Fe-Cr-Si-Mo alloys by MIM process. These results revealed that the magnetic and mechanical properties were improved by reducing Cr content, and the corrosion resistance were improved by adding Mo even if the amount of Cr reduced. On the other hand, we found that the hardness of these alloys increased by adding Si and Mo. In this study, Fe-Cr-Si alloy specimens containing Si and Mo to increase hardness are manufactured by MIM process, and we investigated the magnetic and mechanical properties. These results revealed that Fe-12Cr-4.5Si-2Mo alloy is a material with excellent magnetic and mechanical properties.
- Subjects
ELECTRONIC fuel injection systems in automobiles; INJECTION molding of metals; MAGNETIC materials; MANUFACTURING processes; ELECTRONIC equipment; MAGNETIC alloys
- Publication
Journal of the Japan Society of Powder & Powder Metallurgy / Funtai Oyobi Fummatsu Yakin, 2021, Vol 68, Issue 9, p367
- ISSN
0532-8799
- Publication type
Article
- DOI
10.2497/jjspm.68.367