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NTIS 바로가기Korean chemical engineering research = 화학공학, v.54 no.1, 2016년, pp.44 - 51
The powder core, conventionally fabricated from iron particles coated with insulator, showed large eddy current loss under high frequency, because of small specific resistance. To overcome the eddy current loss, the increase in the specific resistance of powder cores was needed. In this study, coppe...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
자심에 이용되는 자성재료는? | 자심에 이용되는 자성재료는 연자성체(soft magnetic composites; SMCs)이다. 연자성체의 미래는 고주파영역에서 변압기, 제트엔진, 전기모터를 어떻게 적용할 수 있는가에 달려있다. | |
압분자심의 와전류 손실을 해결하기 위한 방법은? | 전도성 물질인 철 입자(iron particles)를 절연체로 코팅하여 제작한 압분자심(powder core)은 비저항이 작기 때문에 고주파 영역에서 와전류 손실이 크다. 이 결함을 해결하기 위해서는 압분자심의 비저항을 증가시킬 필요가 있다. 이 연구에서는 압분자심의 비저항을 증가시키기 위하여 유성볼밀을 사용하여 전기전도성 철 입자에 산화제2구리를 코팅하였다. | |
압분자심이란? | 압분자심(compressed powder core)이란 자성분말 표면을 절연층으로 코팅하여 성형하거나 혹은 자성분말과 절연재료의 혼합분말을 성형하여 제작한 것이다[1]. 압분자심은 (1) 등방성의 자기특성을 가지게되며, 3차원적인자기회로설계가가능하다. |
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