CN109509604B - 一种钕铁硼磁体的制备方法 - Google Patents
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- 229910001172 neodymium magnet Inorganic materials 0.000 title claims abstract description 39
- 238000002360 preparation method Methods 0.000 title claims abstract description 23
- 239000003607 modifier Substances 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 17
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 13
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 13
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 11
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052751 metal Inorganic materials 0.000 claims abstract description 5
- 239000002184 metal Substances 0.000 claims abstract description 5
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 3
- 238000000498 ball milling Methods 0.000 claims description 18
- 239000000203 mixture Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 12
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 claims description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 9
- ZKATWMILCYLAPD-UHFFFAOYSA-N niobium pentoxide Chemical compound O=[Nb](=O)O[Nb](=O)=O ZKATWMILCYLAPD-UHFFFAOYSA-N 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 238000005245 sintering Methods 0.000 claims description 6
- 239000002904 solvent Substances 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000003723 Smelting Methods 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 239000011324 bead Substances 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 claims description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 3
- 238000012986 modification Methods 0.000 claims description 3
- 238000007873 sieving Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 229910000018 strontium carbonate Inorganic materials 0.000 claims description 3
- LEDMRZGFZIAGGB-UHFFFAOYSA-L strontium carbonate Chemical compound [Sr+2].[O-]C([O-])=O LEDMRZGFZIAGGB-UHFFFAOYSA-L 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract 1
- 229910052779 Neodymium Inorganic materials 0.000 abstract 1
- 229910052796 boron Inorganic materials 0.000 abstract 1
- QEFYFXOXNSNQGX-UHFFFAOYSA-N neodymium atom Chemical compound [Nd] QEFYFXOXNSNQGX-UHFFFAOYSA-N 0.000 abstract 1
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000000696 magnetic material Substances 0.000 description 2
- 229910017569 La2(CO3)3 Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
Classifications
-
- 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
- H01F1/032—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 hard-magnetic materials
- H01F1/04—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 hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
-
- 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
- H01F41/0253—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 for manufacturing permanent magnets
- H01F41/0266—Moulding; Pressing
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Hard Magnetic Materials (AREA)
Abstract
本发明提供的一种钕铁硼磁体的制备方法，所述钕铁硼磁体按重量份包括1‑3份石墨烯、1‑2份镍粉、1‑5份锌粉、10‑15份改性剂以及70‑90份钕铁硼粉末；所述改性剂为通式为Sr1‑ xAxBi2Nb2O9，A为La、Ca、Ba、Na；0≤x≤0.03；本发明提供的一种钕铁硼磁体的制备方法，在钕铁硼粉末中添加石墨烯和镍粉，从而石墨烯与金属界面充分有效粘结，有效提高永磁材料的强度。改性剂Sr1‑xAxBi2Nb2O9可以提高钕铁硼磁体的磁能积和矫顽力，完善钕铁硼磁体的性能。
Description
技术领域
本发明涉及钕铁硼领域，特别涉及一种钕铁硼磁体的制备方法。
背景技术
钕铁硼磁体作为第三代稀土永磁材料，具有其他永磁材料无法比拟的优异的磁性能和高的性价比。因此，自发现以来，其得到了广泛的研究和迅猛的发展，已在计算机、通讯电子、汽车、航空等高技术领域得到广泛应用。随着磁性能的不断提高，其应用范围也在不断扩大，这也使其力学性能差的缺点逐渐凸显出来，成为限制其进一步应用的主要问题。因此，提高钕铁硼磁体的力学性能成为扩大其应用范围的重要基础。
发明内容
本发明的目的是克服现有技术的不足，提供一种钕铁硼磁体的制备方法。
为了实现上述目的，本发明提供的一种钕铁硼磁体的制备方法，所述钕铁硼磁体按重量份包括1-3份石墨烯、1-2份镍粉、1-5份锌粉、10-15份改性剂以及70-90份钕铁硼粉末；所述改性剂为通式为Sr1-xAxBi2Nb2O9，A为La、Ca、Ba、Na；0≤x≤0.03；
上述钕铁硼磁体的制备方法，包括以下步骤：
步骤一、改性体的制备，按照化学通式Sr1-xAxBi2Nb2O9中各组分的摩尔比，取原料SrCO3, Bi2O3, Nb2O5和A元素的碳酸化合物，然后将混合原料与溶剂按质量比1：1加入球磨罐进行球磨，接着将球磨料进行干燥并过100目的网筛得到颗粒均匀的干燥粉体，再将粉体在900℃空气中进行2-4小时预烧，球磨得到改性剂；
步骤二、钕铁硼磁体的制备，按重量份将1-3份石墨烯、1-2份镍粉、1-5份锌粉、10-15份改性剂以及70-90份钕铁硼粉末混合后放置在真空速凝炉里熔炼，浇注成厚度为0-0.6mm的金属薄片；接着在氢碎炉中氢破成1-200μm的颗粒；在气流磨中破碎成0-15μm的颗粒；然后进入成型压机，在2.0T磁场下成型，200T压力下静压；最后放入烧结炉中，于1000-1100℃烧结，800-1000℃一级回火，460-560℃二级回火。
在改性体的制备过程中球磨所用的球磨珠为氧化锆、氧化铈或氧化铝中的一种或几种。
在改性体的制备过程中球磨所用的溶剂为甲醇、乙醇、丙酮、去离子水的一种或者几种。
本发明提供的一种钕铁硼磁体的制备方法，在钕铁硼粉末中添加石墨烯和镍粉，从而石墨烯与金属界面充分有效粘结，有效提高永磁材料的强度。改性剂Sr1-xAxBi2Nb2O9可以提高钕铁硼磁体的磁能积和矫顽力，完善钕铁硼磁体的性能。
具体实施方式
实施例1
本实施例提供的一种钕铁硼磁体的制备方法，所述钕铁硼磁体按重量份包括1份石墨烯、1份镍粉、1份锌粉、10份改性剂以及70份钕铁硼粉末；所述改性剂为Sr0.9La0.1Bi2Nb2O9，
上述钕铁硼磁体的制备方法，包括以下步骤：
步骤一、改性体的制备，按照化学通式Sr0.9La0.1Bi2Nb2O9中各组分的摩尔比，取原料SrCO3, La2(CO3)3， Bi2O3, Nb2O5；然后将混合原料与溶剂按质量比1：1加入球磨罐进行球磨，接着将球磨料进行干燥并过100目的网筛得到颗粒均匀的干燥粉体，再将粉体在900℃空气中进行2-4小时预烧，球磨得到改性剂；
步骤二、钕铁硼磁体的制备，按重量份将1份石墨烯、1份镍粉、1份锌粉、10份改性剂以及70份钕铁硼粉末混合后放置在真空速凝炉里熔炼，浇注成厚度为0-0.6mm的金属薄片；接着在氢碎炉中氢破成1-200μm的颗粒；在气流磨中破碎成0-15μm的颗粒；然后进入成型压机，在2.0T磁场下成型，200T压力下静压；最后放入烧结炉中，于1000-1100℃烧结，800-1000℃一级回火，460-560℃二级回火。
在改性体的制备过程中球磨所用的球磨珠为氧化锆、氧化铈或氧化铝中的一种或几种。在改性体的制备过程中球磨所用的溶剂为甲醇、乙醇、丙酮、去离子水的一种或者几种。
实施例2
本实施例提供的一种钕铁硼磁体的制备方法，其与实施例1的区别在于所述钕铁硼磁体按重量份包括3份石墨烯、2份镍粉、5份锌粉、15份改性剂以及90份钕铁硼粉末，所述改性剂为Sr0.9Ca0.1Bi2Nb2O9，原料为SrCO3, CaCO3， Bi2O3, Nb2O5。
实施例3
本实施例提供的一种钕铁硼磁体的制备方法，其与实施例1的区别在于所述钕铁硼磁体按重量份包括2份石墨烯、2份镍粉、3份锌粉、11份改性剂以及80份钕铁硼粉末，所述改性剂为Sr0.8Ba0.2Bi2Nb2O9，原料为SrCO3, BaCO3， Bi2O3, Nb2O5。
Claims (1)
1.一种钕铁硼磁体的制备方法，其特征在于，所述钕铁硼磁体按重量份包括1-3份石墨烯、1-2份镍粉、1-5份锌粉、10-15份改性剂以及70-90份钕铁硼粉末；所述改性剂为通式为Sr1-xAxBi2Nb2O9，A为La、Ca、Ba、Na；0≤x≤0.03；上述钕铁硼磁体的制备方法，包括以下步骤：步骤一、改性体的制备，按照化学通式Sr1-xAxBi2Nb2O9中各组分的摩尔比，取原料SrCO3, Bi2O3, Nb2O5和A元素的碳酸化合物，然后将混合原料与溶剂按质量比1：1加入球磨罐进行球磨，接着将球磨料进行干燥并过100目的网筛得到颗粒均匀的干燥粉体，再将粉体在900℃空气中进行2-4小时预烧，球磨得到改性剂；步骤二、钕铁硼磁体的制备，按重量份将1-3份石墨烯、1-2份镍粉、1-5份锌粉、10-15份改性剂以及70-90份钕铁硼粉末混合后放置在真空速凝炉里熔炼，浇注成厚度为0-0.6mm的金属薄片；接着在氢碎炉中氢破成1-200μm的颗粒；在气流磨中破碎成0-15μm的颗粒；然后进入成型压机，在2.0T磁场下成型，200T压力下静压；最后放入烧结炉中，于1000-1100℃烧结，800-1000℃一级回火，460-560℃二级回火；在改性体的制备过程中球磨所用的球磨珠为氧化锆、氧化铈或氧化铝中的一种或几种；在改性体的制备过程中球磨所用的溶剂为甲醇、乙醇、丙酮、去离子水的一种或者几种。
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260114A (ja) * | 1987-04-17 | 1988-10-27 | Taiyo Yuden Co Ltd | 永久磁石及びその製造方法 |
| CN104376947A (zh) * | 2014-12-13 | 2015-02-25 | 张乔木 | 一种耐热烧结钕铁硼永磁材料及制备方法 |
| CN108417336A (zh) * | 2018-05-21 | 2018-08-17 | 南通万宝实业有限公司 | 一种高强度钕铁硼永磁材料 |
| CN108735414A (zh) * | 2018-05-21 | 2018-11-02 | 南通万宝实业有限公司 | 一种高强度钕铁硼永磁材料的制备方法 |
| CN108962528A (zh) * | 2018-06-29 | 2018-12-07 | 南京信息工程大学 | 一种具有高温稳定性的磁性材料及其制备方法 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US4018690A (en) * | 1973-04-13 | 1977-04-19 | Eastman Kodak Company | Process for preparing sulfur-containing ferromagnetic chromium oxide |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63260114A (ja) * | 1987-04-17 | 1988-10-27 | Taiyo Yuden Co Ltd | 永久磁石及びその製造方法 |
| CN104376947A (zh) * | 2014-12-13 | 2015-02-25 | 张乔木 | 一种耐热烧结钕铁硼永磁材料及制备方法 |
| CN108417336A (zh) * | 2018-05-21 | 2018-08-17 | 南通万宝实业有限公司 | 一种高强度钕铁硼永磁材料 |
| CN108735414A (zh) * | 2018-05-21 | 2018-11-02 | 南通万宝实业有限公司 | 一种高强度钕铁硼永磁材料的制备方法 |
| CN108962528A (zh) * | 2018-06-29 | 2018-12-07 | 南京信息工程大学 | 一种具有高温稳定性的磁性材料及其制备方法 |
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