CN116239377A - 一种高性能锰锌铁氧体材料、铁氧体磁芯及其烧结方法 - Google Patents
一种高性能锰锌铁氧体材料、铁氧体磁芯及其烧结方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 23
- 238000005245 sintering Methods 0.000 title claims abstract description 20
- 229910001289 Manganese-zinc ferrite Inorganic materials 0.000 title claims abstract description 15
- JIYIUPFAJUGHNL-UHFFFAOYSA-N [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mn++].[Mn++].[Mn++].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Fe+3].[Zn++].[Zn++] JIYIUPFAJUGHNL-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims description 13
- 229910000859 α-Fe Inorganic materials 0.000 title claims description 11
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 30
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 claims abstract description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011787 zinc oxide Substances 0.000 claims abstract description 15
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 11
- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910000428 cobalt oxide Inorganic materials 0.000 claims abstract description 11
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 claims abstract description 11
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910001935 vanadium oxide Inorganic materials 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 229910000484 niobium oxide Inorganic materials 0.000 claims abstract description 9
- URLJKFSTXLNXLG-UHFFFAOYSA-N niobium(5+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Nb+5].[Nb+5] URLJKFSTXLNXLG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000000498 ball milling Methods 0.000 claims abstract description 8
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000005453 pelletization Methods 0.000 claims abstract description 8
- 239000007921 spray Substances 0.000 claims abstract description 8
- 230000035699 permeability Effects 0.000 claims abstract description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims abstract description 5
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000000292 calcium oxide Substances 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 5
- 239000013543 active substance Substances 0.000 claims abstract description 4
- 239000002002 slurry Substances 0.000 claims description 15
- 239000000843 powder Substances 0.000 claims description 9
- 238000003825 pressing Methods 0.000 claims description 9
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 6
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 4
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 230000004907 flux Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000013067 intermediate product Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910000416 bismuth oxide Inorganic materials 0.000 abstract description 2
- 238000000748 compression moulding Methods 0.000 abstract description 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003292 glue Substances 0.000 abstract description 2
- 229910000464 lead oxide Inorganic materials 0.000 abstract description 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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Abstract
本发明公开了一种高性能锰锌铁氧体材料,该铁氧体材料包括主成分和副成分,所述主成分包括氧化铁、氧化锰、氧化锌,所述副成分包括铌氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、活性剂。本发明高性能锰锌铁氧体材料具有宽温、宽频、超低损耗,采用主成分为氧化铁、氧化锰、氧化锌,副成分包括铋氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、铅氧化物,经过混料、造球、高温预烧、球磨掺杂、掺胶造粒、喷雾造粒、压制成型、烧结成型步骤制得的磁芯,具有较高的初始磁导率。
Description
技术领域
本发明涉及电源变压器技术领域,特别是涉及一种高性能锰锌铁氧体材料、铁氧体磁芯及其烧结方法。
背景技术
电源变压器的功能是功率传送、电压变换和绝缘隔离,作为一种主要的软磁电磁元件,在电源技术中和电力电子技术中得到广泛的应用。根据传送功率的大小,电源变压器可以分为几档:10kVA以上为大功率,10kVA-0.5kVA为中功率,0.5kVA-25VA为小功率,25VA以下为微功率。传送功率不同,电源变压器的设计也不一样,应当是不言而喻的。根据高频电源变压器的设计要求,选择软磁材料本来应当是设计程序的第一项。本发明是为了提高磁芯初始磁导率而提供的一种新的方案。
发明内容
本发明旨在提供一种高性能锰锌铁氧体材料、铁氧体磁芯及其烧结方法。
为实现上述目的,本发明提供如下技术方案:一种高性能锰锌铁氧体材料,该铁氧体材料包括主成分和副成分,所述主成分包括氧化铁、氧化锰、氧化锌,所述副成分包括铌氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、活性剂。
作为本发明更进一步地,所述氧化铁、氧化锰、氧化锌以各自标准物计的摩尔百分比含量为Fe2O3:53-55mol%、MnO:34-37mol%、ZnO:8-10mol%。
作为本发明更进一步地,所述铌氧化物、钒氧化物、钛氧化物、钴氧化物以其标准物计的重量百分比含量为Nb205:0.003-0.006wt%、V205:0.005-0.008wt%、TiO2:0.005-0.20wt%、Co2O3:0.25-0.40wt%。
作为本发明更进一步地,所述铁氧体材料在f<10kHz,Bs<0.25mT时,居里温度大于240℃,密度>4.9×103kg/m3;在100℃温度条件下饱和磁通密度Bs为450mT。
一种高性能锰锌铁氧体材料的烧结方法,包括以下步骤:
1)混料,将氧化铁、氧化锰、氧化锌按配比混合均匀;
2)造球,将步骤1)混合均匀的中间料进行造球,球径控制在5±2mm;
3)高温预烧,将步骤2)的中间产物球体在950-1050℃高温下预烧,预烧时间为3-5h;
4)球磨掺杂,按比例取铌氧化物、钒氧化物、钛氧化物、钴氧化物,并与步骤3)预烧后的主成分粉料进行球磨,球磨时间15-18h,转速200-220rpm,得到掺杂料浆;
5)掺胶造粒,向上述步骤4)所得的掺杂料浆内加入聚乙烯醇,使掺杂料浆与聚乙烯醇混合均匀,得到掺胶料浆;
6)喷雾造粒,将步骤5)所得的掺胶料浆经过喷雾造粒,满足松装比重、颗粒分布、流动角、含水量参数,得到中间粉体;
7)压制成型,将上述步骤6)所得的中间粉体压制成坯件,压模压力300-400MPa,保压5-10s;
8)烧结成型,将步骤7)所得压制的坯件,在钟罩炉烧结,烧结温度为1280-1320℃,升降温速度40-60℃/h,保温时间6-8h,保温阶段氧分压控制在3-4%,烧结后坯料随炉冷却,冷却温速度60-80℃/h。
作为本发明更进一步地,所述磁芯在温度25℃,f<10kHz,Bs<0.5mT时,具有>3400起始磁导率。
作为本发明更进一步地,所述磁芯在f<100kHz,Bs<200mT,温度区域25℃-120℃内的功耗值Pv均在300kW/m3以下。
本发明的有益效果如下:
本发明高性能锰锌铁氧体材料具有宽温、宽频、超低损耗,采用主成分为氧化铁、氧化锰、氧化锌,副成分包括铋氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、铅氧化物,经过混料、造球、高温预烧、球磨掺杂、掺胶造粒、喷雾造粒、压制成型、烧结成型步骤制得的磁芯,具有较高的初始磁导率。
在25~120℃温度范围内的功耗值Pv低于300kW/m3,功耗曲线平缓,高Bs特性,能更好地满足大功率电源变压器设计的性能和成本需要。
具体实施方式
为了便于本领域技术人员的理解,下面结合实施例对本发明作进一步的说明,实施方式提及的内容并非对本发明的限定。
实施例1
一种高性能锰锌铁氧体材料,该铁氧体材料包括主成分和副成分,主成分包括氧化铁、氧化锰、氧化锌,副成分包括铌氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、活性剂。
实施例2
其余与实施例1的方案一致,氧化铁、氧化锰、氧化锌以各自标准物计的摩尔百分比含量为Fe2O3:53-55mol%、MnO:34-37mol%、ZnO:8-10mol%。
实施例3
其余与实施例1或2的方案一致,铌氧化物、钒氧化物、钛氧化物、钴氧化物以其标准物计的重量百分比含量为Nb205:0.003-0.006wt%、V205:0.005-0.008wt%、TiO2:0.005-0.20wt%、Co2O3:0.25-0.40wt%。
实施例4
其余与实施例1-3的任一方案一致,铁氧体材料在f<10kHz,Bs<0.25mT时,居里温度大于240℃,密度>4.9×103kg/m3;在100℃温度条件下饱和磁通密度Bs为450mT。
实施例5
一种高性能锰锌铁氧体材料的烧结方法,包括以下步骤:
1)混料,将氧化铁、氧化锰、氧化锌按配比混合均匀;
2)造球,将步骤1)混合均匀的中间料进行造球,球径控制在5±2mm;
3)高温预烧,将步骤2)的中间产物球体在950-1050℃高温下预烧,预烧时间为3-5h;
4)球磨掺杂,按比例取铌氧化物、钒氧化物、钛氧化物、钴氧化物,并与步骤3)预烧后的主成分粉料进行球磨,球磨时间15-18h,转速200-220rpm,得到掺杂料浆;
5)掺胶造粒,向上述步骤4)所得的掺杂料浆内加入聚乙烯醇,使掺杂料浆与聚乙烯醇混合均匀,得到掺胶料浆;
6)喷雾造粒,将步骤5)所得的掺胶料浆经过喷雾造粒,满足松装比重、颗粒分布、流动角、含水量参数,得到中间粉体;
7)压制成型,将上述步骤6)所得的中间粉体压制成坯件,压模压力300-400MPa,保压5-10s;
8)烧结成型,将步骤7)所得压制的坯件,在钟罩炉烧结,烧结温度为1280-1320℃,升降温速度40-60℃/h,保温时间6-8h,保温阶段氧分压控制在3-4%,烧结后坯料随炉冷却,冷却温速度60-80℃/h。
磁芯在温度25℃,f<10kHz,Bs<0.5mT时,具有>3400起始磁导率。
磁芯在f<100kHz,Bs<200mT,温度区域25℃-120℃内的功耗值Pv均在300kW/m3以下。
上述实施例为本发明较佳的实现方案,除此之外,本发明还可以其它方式实现,在不脱离本技术方案构思的前提下任何显而易见的替换均在本发明的保护范围之内。
Claims (7)
1.一种高性能锰锌铁氧体材料,其特征在于:该铁氧体材料包括主成分和副成分,所述主成分包括氧化铁、氧化锰、氧化锌,所述副成分包括铌氧化物、钒氧化物、钛氧化物、钴氧化物、钙氧化物、活性剂。
2.根据权利要求1所述的高性能锰锌铁氧体材料,其特征在于:所述氧化铁、氧化锰、氧化锌以各自标准物计的摩尔百分比含量为Fe2O3:53-55mol%、MnO:34-37mol%、ZnO:8-10mol%。
3.根据权利要求1所述的高性能锰锌铁氧体材料,其特征在于:所述铌氧化物、钒氧化物、钛氧化物、钴氧化物以其标准物计的重量百分比含量为Nb205:0.003-0.006wt%、V205:0.005-0.008wt%、TiO2:0.005-0.20wt%、Co2O3:0.25-0.40wt%。
4.根据权利要求1所述的高性能锰锌铁氧体材料,其特征在于:所述铁氧体材料在f<10kHz,Bs<0.25mT时,居里温度大于240℃,密度>4.9×103kg/m3;在100℃温度条件下饱和磁通密度Bs为450mT。
5.如权利要求1所述的高性能锰锌铁氧体材料的烧结方法,其特征在于,包括以下步骤:
1)混料,将氧化铁、氧化锰、氧化锌按配比混合均匀;
2)造球,将步骤1)混合均匀的中间料进行造球,球径控制在5±2mm;
3)高温预烧,将步骤2)的中间产物球体在950-1050℃高温下预烧,预烧时间为3-5h;
4)球磨掺杂,按比例取铌氧化物、钒氧化物、钛氧化物、钴氧化物,并与步骤3)预烧后的主成分粉料进行球磨,球磨时间15-18h,转速200-220rpm,得到掺杂料浆;
5)掺胶造粒,向上述步骤4)所得的掺杂料浆内加入聚乙烯醇,使掺杂料浆与聚乙烯醇混合均匀,得到掺胶料浆;
6)喷雾造粒,将步骤5)所得的掺胶料浆经过喷雾造粒,满足松装比重、颗粒分布、流动角、含水量参数,得到中间粉体;
7)压制成型,将上述步骤6)所得的中间粉体压制成坯件,压模压力300-400MPa,保压5-10s;
8)烧结成型,将步骤7)所得压制的坯件,在钟罩炉烧结,烧结温度为1280-1320℃,升降温速度40-60℃/h,保温时间6-8h,保温阶段氧分压控制在3-4%,烧结后坯料随炉冷却,冷却温速度60-80℃/h。
6.利用权利要求5所述的烧结方法制造的铁氧体磁芯,其特征在于:所述磁芯在温度25℃,f<10kHz,Bs<0.5mT时,具有>3400起始磁导率。
7.利用权利要求5所述的烧结方法制造的铁氧体磁芯,其特征在于:所述磁芯在f<100kHz,Bs<200mT,温度区域25℃-120℃内的功耗值Pv均在300kW/m3以下。
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