CN107910177A - 一种高性能FeSi软磁粉芯的制备方法 - Google Patents

一种高性能FeSi软磁粉芯的制备方法 Download PDF

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CN107910177A
CN107910177A CN201711137970.6A CN201711137970A CN107910177A CN 107910177 A CN107910177 A CN 107910177A CN 201711137970 A CN201711137970 A CN 201711137970A CN 107910177 A CN107910177 A CN 107910177A
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powder
soft magnetic
cores
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王耀斌
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Shaanxi Shengmai Petroleum Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0246—Manufacturing of magnetic circuits by moulding or by pressing powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
    • B22F1/105—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material containing inorganic lubricating or binding agents, e.g. metal salts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/02—Compacting only
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/12—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials
    • H01F1/14—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of soft-magnetic materials metals or alloys
    • H01F1/147—Alloys characterised by their composition
    • H01F1/14766—Fe-Si based alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • B22F2998/10—Processes characterised by the sequence of their steps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Dispersion Chemistry (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

本发明涉及粉末冶金技术领域，具体涉及一种高性能FeSi软磁粉芯的制备方法。一种高性能FeSi软磁粉芯的制备方法，包括以下步骤：原材料；粉末的预处理；温压成形；胚体的热处理。本文作者采用Fe‑6.5Si粉末，在Si含量相对较高的情况下，通过粉末冶金的方法制备Fe‑Si软磁粉芯。通过引入温压工艺替代传统压制工艺来降低高Si含量Fe‑Si粉末的成形难度，并使用硅酸盐和多组分氧化物作为复合无机粘结剂替代传统单一无机粘结剂，以期提高磁粉芯的磁性能，制备出具有良好综合性能的软磁粉芯。

Description

一种高性能FeSi软磁粉芯的制备方法
技术领域
本发明涉及粉末冶金技术领域，具体涉及一种高性能FeSi软磁粉芯的制备方法。
背景技术
现代科学技术的发展使磁性材料得到了广泛的应用，在电子产品、通讯设备、计算机及其外围设备、仪器仪表和现代军事装备中均大量使用磁性材料及元器件。随着电子器件向小型化、高密度和高功率化发展，要求磁性材料和器件具有良好的电磁性、力学性能及高的品质因数。Fe-Si合金是一类性能优异的软磁材料，是制造电机、变压器和镇流器铁芯以及多种电器元件的重要材料，且市场需求在不断增加。
对于Fe-Si合金，增加Si含量可以提高磁导率、饱和磁感应强度，降低磁致伸缩和铁损，这对降低变压器的噪声和实现电机电器的大型化和微型化都较为有利。但是Si含量的提高会导致Fe-Si合金的脆性增加，降低其加工性能，因此一般Fe-Si软磁材料中，Si含量都小于5％。另一方面，高Si含量的Fe-Si软磁粉芯的制备较为困难。
发明内容
本发明旨在提出一种高性能FeSi软磁粉芯的制备方法。
本发明的技术方案在于：
一种高性能FeSi软磁粉芯的制备方法，包括以下步骤：
步骤1：原材料：Fe-6.5Si粉末，粒度为154um，其质量分数约为w(Si)6．5％、w（p）≤0.01、w(0)≤0.04％、w(S)≤0.01％、w(C)≤0.02％、余量为Fe；无机粘结剂：为粒度154um的硅酸盐和多组分混合氧化物；
步骤2：粉末的预处理：
（1）Fe-6.5Si粉末首先在氢气气氛下进行热处理，再称取润滑剂和无机粘结剂，于球磨机中机械混粉8h；
（2）将上述混合粉末倒入容器中，在80℃下烘干2h后得到温压所需混合粉末；
步骤3：温压成形：称取混合粉末，并在一定的温度、压强下装入已预热的温压模具中进行压制，压制后得到直径为20mm的圆片状压坯；
步骤4：胚体的热处理：
（1）将压坯置于电阻炉中180℃稳定化处理2h；
（2）并在GSL-1600X管式炉中氩气气氛下720℃热处理，保温2h；
（3）冷却后得到所需的经热处理后的Fe-6.5Si磁粉芯。
优选地，所述的温压成形所需的压力为900MPa，温度为150℃。
本发明的技术效果在于：
本文作者采用Fe-6.5Si粉末，在Si含量相对较高的情况下，通过粉末冶金的方法制备Fe-Si软磁粉芯。通过引入温压工艺替代传统压制工艺来降低高Si含量Fe-Si粉末的成形难度，并使用硅酸盐和多组分氧化物作为复合无机粘结剂替代传统单一无机粘结剂，以期提高磁粉芯的磁性能，制备出具有良好综合性能的软磁粉芯。
具体实施方式
一种高性能FeSi软磁粉芯的制备方法，包括以下步骤：
步骤1：原材料：Fe-6.5Si粉末，粒度为154um，其质量分数约为w(Si)6．5％、w（p）≤0.01、w(0)≤0.04％、w(S)≤0.01％、w(C)≤0.02％、余量为Fe；无机粘结剂：为粒度154um的硅酸盐和多组分混合氧化物；
步骤2：粉末的预处理：
（1）Fe-6.5Si粉末首先在氢气气氛下进行热处理，再称取润滑剂和无机粘结剂，于球磨机中机械混粉8h；
（2）将上述混合粉末倒入容器中，在80℃下烘干2h后得到温压所需混合粉末；
步骤3：温压成形：称取混合粉末，并在一定的温度、压强下装入已预热的温压模具中进行压制，压制后得到直径为20mm的圆片状压坯；
步骤4：胚体的热处理：
（1）将压坯置于电阻炉中180℃稳定化处理2h；
（2）并在GSL-1600X管式炉中氩气气氛下720℃热处理，保温2h；
（3）冷却后得到所需的经热处理后的Fe-6.5Si磁粉芯。
其中，所述的温压成形所需的压力为900MPa，温度为150℃。

Claims (2)

1.一种高性能FeSi软磁粉芯的制备方法，其特征在于：包括以下步骤：
步骤1：原材料：Fe-6.5Si粉末，粒度为154um，其质量分数约为w(Si)6．5％、w（p）≤0.01、w(0)≤0.04％、w(S)≤0.01％、w(C)≤0.02％、余量为Fe；无机粘结剂：为粒度154um的硅酸盐和多组分混合氧化物；
步骤2：粉末的预处理：
（1）Fe-6.5Si粉末首先在氢气气氛下进行热处理，再称取润滑剂和无机粘结剂，于球磨机中机械混粉8h；
（2）将上述混合粉末倒入容器中，在80℃下烘干2h后得到温压所需混合粉末；
步骤3：温压成形：称取混合粉末，并在一定的温度、压强下装入已预热的温压模具中进行压制，压制后得到直径为20mm的圆片状压坯；
步骤4：胚体的热处理：
（1）将压坯置于电阻炉中180℃稳定化处理2h；
（2）并在GSL-1600X管式炉中氩气气氛下720℃热处理，保温2h；
（3）冷却后得到所需的经热处理后的Fe-6.5Si磁粉芯。
2.如权利要求1一种高性能FeSi软磁粉芯的制备方法，其特征在于：所述的温压成形所需的压力为900MPa，温度为150℃。
CN201711137970.6A 2017-11-16 2017-11-16 一种高性能FeSi软磁粉芯的制备方法 Withdrawn CN107910177A (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277238A (zh) * 2019-07-16 2019-09-24 山东精创磁电产业技术研究院有限公司 一种高饱和磁通密度、高强度软磁复合材料及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110277238A (zh) * 2019-07-16 2019-09-24 山东精创磁电产业技术研究院有限公司 一种高饱和磁通密度、高强度软磁复合材料及其制备方法

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