| 학회 |
한국화학공학회 |
| 학술대회 |
2015년 가을 (10/21 ~ 10/23, 일산 KINTEX) |
| 권호 |
21권 2호, p.2145 |
| 발표분야 |
재료 |
| 제목 |
Synthesis and Characterization of Coated Carbonyl Iron Powder |
| 초록 |
Ferromagnetic particles coated with an electrically insulating layer are famous for soft magnetic composites (SMCs). Here we reported a new method to prepare SMCs using carbonyl iron powder, and further investigated their insulation coating performance. FTIR and XRD spectra were measured to confirm the coating components, and TEM-EDX analysis was utilized to check the thickness and uniformity of coating layer. Experiment shows that the particle surface contains a thin layer of phosphate salt with high coverage rate. With the coating layer increased, the electrical resistivity increased with less loss factor. Thermodynamic modeling of the chemical system has been adopted as a rational approach to establish routes to better synthesis conditions for pure phase magnetite. Parallel experiments of different metal elements involved in the forming of insulating layers have been done to determine optimum synthesis conditions. Size of insulating layer coated carbonyl iron powder have been controlled by silane coupling agent concentration and finally selected using test sieve with diameters between 63μm and 106μm. The quality of the inductive factors were enhanced due to eliminating the internal stress, thereby increasing the permeability. |
| 저자 |
Zhao Fei1, 이요한2, 김종성1, 김도형1
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| 소속 |
1가천대, 2(주)아비코 |
| 키워드 |
Insulation coating; Carbonyl iron powder
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| E-Mail |
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| 원문파일 |
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