CN110483072A - 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法 - Google Patents

永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法 Download PDF

Info

Publication number
CN110483072A
CN110483072A CN201910725727.9A CN201910725727A CN110483072A CN 110483072 A CN110483072 A CN 110483072A CN 201910725727 A CN201910725727 A CN 201910725727A CN 110483072 A CN110483072 A CN 110483072A
Authority
CN
China
Prior art keywords
permanent
magnet ferrite
sodium alginate
magnetic powder
thin magnetic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201910725727.9A
Other languages
English (en)
Other versions
CN110483072B (zh
Inventor
雷成龙
涂巍巍
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HAIAN INSTITUTE OF HIGH-TECH RESEARCH NANJING UNIVERSITY
Original Assignee
HAIAN INSTITUTE OF HIGH-TECH RESEARCH NANJING UNIVERSITY
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HAIAN INSTITUTE OF HIGH-TECH RESEARCH NANJING UNIVERSITY filed Critical HAIAN INSTITUTE OF HIGH-TECH RESEARCH NANJING UNIVERSITY
Priority to CN201910725727.9A priority Critical patent/CN110483072B/zh
Publication of CN110483072A publication Critical patent/CN110483072A/zh
Application granted granted Critical
Publication of CN110483072B publication Critical patent/CN110483072B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/62605—Treating the starting powders individually or as mixtures
    • C04B35/62685—Treating the starting powders individually or as mixtures characterised by the order of addition of constituents or additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/626—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B
    • C04B35/63—Preparing or treating the powders individually or as batches ; preparing or treating macroscopic reinforcing agents for ceramic products, e.g. fibres; mechanical aspects section B using additives specially adapted for forming the products, e.g.. binder binders
    • C04B35/632—Organic additives
    • C04B35/636—Polysaccharides or derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
    • C04B2235/602—Making the green bodies or pre-forms by moulding
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
    • C04B2235/6567—Treatment time

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Magnetic Ceramics (AREA)
  • Hard Magnetic Materials (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)

Abstract

本申请公开了一种永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法，成型方法依次包括如下步骤：S1制备海藻酸钠；S2制备浓缩料；S3制备成型用料；S4压制成型；S5烧结成型。本发明的优点在于避免了因使用樟脑而造成的对人身的危害和对环境的污染，同时其价格远低于樟脑，很大程度上降低了生产成本，并且烧结出的永磁铁氧体具有同等的磁性能。

Description

永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法
技术领域
本申请涉及永磁铁氧体的制造领域，特别涉及一种永磁铁氧体用生物质粘结剂成型方法。
背景技术
传统的干压异性永磁铁氧体生产中，为了使磁性颗粒的取向度好，要求磁性粒子之间的摩擦系数小，即要求粒子之间具有一定的分散性和润滑性；同时为了达到生坯所要求的机械强度，又要求粒子之间具有一定的粘结性。单纯的铁氧体粉料很难达到这样的要求，所以需要在生产过程中加入成型粘结剂。目前工业生产中基本是使用樟脑作为粘结剂，硬质酸钙为成型辅助剂，樟脑在常温下容易挥发，产生大量刺激性气味的气体，对人体有一定的危害，若工人大剂量接触，会造成心脏活动麻痹，引起严重的痉挛。
发明号为201310077165.4的专利发明“一种干式异方性锶铁氧体的制造方法”公开了一种以合成蜡作为粘结剂来代替传统的樟脑粘结剂。但这种方法在批量生产的时候，蜡的融化会产生大量的浓烟对人体和环境有害，因此不利于工业生产。
研究与开发低成本、环保且高性能的干压异性永磁铁氧体的新型制备技术十分重要。海藻酸钠作为一种食品添加剂，具有增稠性好，成膜性好，凝胶强度高，成丝性好的优点。海藻酸钠在水溶液中具有一定的黏附性，可充分发挥其粘结性，辅助硬脂酸钙增加铁氧体磁性粒子之间的润滑性，而且高温分解后产生的气体无味，无毒，有利于环境保护。
发明内容
本发明目的在于提供一种永磁铁氧体用生物质粘结剂成型方法，使用海藻酸钠作为粘结剂，硬质酸钙为成型辅助剂，均为环境友好物质，在生产过程中对人体无害，可避免因使用樟脑而造成的对人身的危害和对环境的污染，同时其价格远低于樟脑，很大程度上降低了生产成本，并且烧结出的永磁铁氧体具有同等的磁性能。
为实现上述目的，本发明提供如下技术方案：
本申请实施例公开了一种永磁铁氧体用生物质粘结剂成型方法，依次包括如下步骤：
S1制备海藻酸钠，将海藻酸溶解于水中，滴加氢氧化钠溶液中和至PH为7，加入活性炭吸附杂质，抽滤得到滤液，在滤液中加入乙醇，将析出的固体产物过滤，球磨，得到海藻酸钠；
S2制备浓缩料，选取预烧料细磁粉，将预烧料细磁粉与海藻酸钠混合，其中海藻酸钠占5-25wt％，预烧料细磁粉占75-95wt％，混合搅拌时均匀加入1-2wt％的雾化水，混合搅拌均匀后用高速分散剂打散；
S3制备成型用料，称取步骤S2所得浓缩料和预烧料细磁粉以质量比1:9混合，再加入该混合物重量0.4-1.2wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S4压制成型：将步骤S3制备的成型用料一次取向成型为毛坯，压制压强≥40MPa，取向磁场≥8000Oe；
S5烧结成型，将步骤S4中制得的毛坯放在推板窑上烧结，烧结温度为1200-1280℃，保温时间为90min。
优选地，在上述永磁铁氧体用生物质粘结剂成型方法中，步骤S1中得到的海藻酸钠的粒径＜80μm。
相应的，还公开了一种永磁铁氧体，采用上述方法制备。
海藻酸钠分子式为(C6H7NaO6)x，主要由海藻酸的钠盐组成，由β-D-甘露糖醛酸(M单元)与α-L-古洛糖醛酸(G单元)依靠β-1,4-糖苷键连接并由不同比例的GM、MM和GG片段组成的共聚物。
海藻酸钠为淡黄色粉末，无臭无味，溶于水，不溶于乙醇、乙醚、氯仿等有机溶剂，粒径＜80μm。
与现有技术相比，本发明优势在于：
1、以海藻酸钠取代樟脑作为粘结剂降低了成本，海藻酸钠是环境友好物质，在生产过程中对人体无害，对环境没有污染；
2、使用海藻酸钠作为粘结剂生产出来产品的剩磁Br、磁感矫顽力Hcb、内禀矫顽力Hcj、磁能积BH，能达到同等或者略高于以樟脑作为粘结剂的产品。
具体实施方式
下面将对本发明实施例中的技术方案进行详细的描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
以下，我们将采用本技术方案制备的永磁铁氧体与樟脑作为粘结剂生产的永磁铁氧体进行性能对比：
实施例1
S1制备海藻酸钠，将海藻酸溶解于水中，滴加氢氧化钠溶液中和至PH为7，加入活性炭吸附杂质，抽滤得到滤液，在滤液中加入乙醇，将析出的固体产物过滤，球磨至粒径75μm，得到海藻酸钠，；
S2制备浓缩料，选取市面上Y38预烧料细磁粉，将预烧料细磁粉与海藻酸钠混合，其中海藻酸钠占10wt％，预烧料细磁粉占90wt％，混合搅拌时均匀加入1.2wt％的雾化水，混合搅拌均匀后用高速分散剂打散；
S3制备成型用料，称取步骤S2所得浓缩料和Y38预烧料细磁粉以质量比1:9混合，再加入该混合物重量1.0wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S4压制成型：将步骤S3制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S5烧结成型，将步骤S4中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间为90min，打磨，得到产品。
实施例2
S1制备海藻酸钠，将海藻酸溶解于水中，滴加氢氧化钠溶液中和至PH为7，加入活性炭吸附杂质，抽滤得到滤液，在滤液中加入乙醇，将析出的固体产物过滤，球磨至粒径70μm，得到海藻酸钠，；
S2制备浓缩料，选取市面上Y38预烧料细磁粉，将预烧料细磁粉与海藻酸钠混合，其中海藻酸钠占15wt％，预烧料细磁粉占85wt％，混合搅拌时均匀加入1.4wt％的雾化水，混合搅拌均匀后用高速分散剂打散；
S3制备成型用料，称取步骤S2所得浓缩料和Y38预烧料细磁粉以质量比1:9混合，再加入该混合物重量0.8wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S4压制成型：将步骤S3制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S5烧结成型，将步骤S4中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间为90min，打磨，得到产品。
实施例3
S1制备海藻酸钠，将海藻酸溶解于水中，滴加氢氧化钠溶液中和至PH为7，加入活性炭吸附杂质，抽滤得到滤液，在滤液中加入乙醇，将析出的固体产物过滤，球磨至粒径60μm，得到海藻酸钠，；
S2制备浓缩料，选取市面上Y38预烧料细磁粉，将预烧料细磁粉与海藻酸钠混合，其中海藻酸钠占20wt％，预烧料细磁粉占80wt％，混合搅拌时均匀加入1.6wt％的雾化水，混合搅拌均匀后用高速分散剂打散；
S3制备成型用料，称取步骤S2所得浓缩料和Y38预烧料细磁粉以质量比1:9混合，再加入该混合物重量0.7wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S4压制成型：将步骤S3制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S5烧结成型，将步骤S4中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间为90min，打磨，得到产品。
对比例1
S1选取市面上Y38预烧料细磁粉，添加预烧料细磁粉1.0wt％的樟脑粉，添加预烧料细磁粉1.0wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S2将步骤S1制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S3将步骤S2中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间90min，打磨，得到产品。
对比例2
S1选取市面上Y38预烧料细磁粉，添加预烧料细磁粉1.5wt％的樟脑粉，添加预烧料细磁粉0.8wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S2将步骤S1制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S3将步骤S2中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间90min，打磨，得到产品。
对比例3
S1选取市面上Y38预烧料细磁粉，添加预烧料细磁粉2.0wt％的樟脑粉，添加预烧料细磁粉0.7wt％的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S2将步骤S1制备的成型用料一次取向成型为毛坯，压制压强40MPa，取向磁场10000Oe；
S3将步骤S2中制得的毛坯放在推板窑上烧结，烧结温度为1260℃，保温时间90min，打磨，得到产品。
将上述实施例以及对比例进行测试，测试方法为：产品的剩磁Br、磁感矫顽力Hcb、内禀矫顽力Hcj、磁能积BH，采用中国计量科学研究院生产的NIM-500C永磁高温测量仪测量，可输出J-H回线、B-H回线、退磁曲线等，测试环境温度为23℃左右，测试结果的重复性为：Br、Hcb、Hcj均为±0.2％。
采用上述测试方法分别对本发明以海藻酸钠作为粘结剂和现有技术采用的樟脑作为粘结剂制备得到的干压异性永磁铁氧体产品进行性能测试，结果列于以下表中：
由表中可以看出，以海藻酸钠作为粘结剂制作的发明产品(实施例1-3)，跟以樟脑作为粘结剂的对比样品(对比例1-3)相比，在磁性能方面，产品的剩磁Br、磁感矫顽力Hcb、内禀矫顽力Hcj、磁能积(BH)max相比于对比例1-3，能达到基本同等或者略高的水平。
上述实施例仅为说明本发明的技术构思及特点，其目的在于让熟悉此项技术的人士能够了解本发明的内容并据以实施，并不能以此限制本发明的保护范围。凡根据本发明精神实质所作的等效变化或修饰，都应涵盖在本发明的保护范围之内。

Claims (3)

1.一种永磁铁氧体用生物质粘结剂成型方法，其特征在于，依次包括如下步骤：
S1 制备海藻酸钠，将海藻酸溶解于水中，滴加氢氧化钠溶液中和至PH为7，加入活性炭吸附杂质，抽滤得到滤液，在滤液中加入乙醇，将析出的固体产物过滤，球磨，得到海藻酸钠；
S2 制备浓缩料，选取预烧料细磁粉，将预烧料细磁粉与海藻酸钠混合，其中海藻酸钠占5-25wt%，预烧料细磁粉占75-95wt%，混合搅拌时均匀加入1-2wt%的雾化水，混合搅拌均匀后用高速分散剂打散；
S3 制备成型用料，称取步骤S2所得浓缩料和预烧料细磁粉以质量比1:9混合，再加入该混合物重量0.4-1.2wt%的硬脂酸钙，混合搅拌均匀后用高速分散剂打散；
S4 压制成型：将步骤S3制备的成型用料一次取向成型为毛坯，压制压强≥40MPa，取向磁场≥8000Oe；
S5 烧结成型，将步骤S4中制得的毛坯放在推板窑上烧结，烧结温度为1200-1280℃，保温时间为90min。
2.根据权利要求1所述的永磁铁氧体用生物质粘结剂成型方法，其特征在于，步骤S1中得到的海藻酸钠的粒径＜80μm。
3.一种永磁铁氧体，采用权利要求1-2任一所述的永磁铁氧体用生物质粘结剂成型方法制备。
CN201910725727.9A 2019-08-07 2019-08-07 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法 Active CN110483072B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910725727.9A CN110483072B (zh) 2019-08-07 2019-08-07 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910725727.9A CN110483072B (zh) 2019-08-07 2019-08-07 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法

Publications (2)

Publication Number Publication Date
CN110483072A true CN110483072A (zh) 2019-11-22
CN110483072B CN110483072B (zh) 2022-04-22

Family

ID=68550107

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910725727.9A Active CN110483072B (zh) 2019-08-07 2019-08-07 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法

Country Status (1)

Country Link
CN (1) CN110483072B (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112723871A (zh) * 2020-12-30 2021-04-30 南京瑞洋新材料科技有限公司 一种高磁性永磁铁氧体磁瓦及其制备方法
CN114380588A (zh) * 2020-10-20 2022-04-22 海安南京大学高新技术研究院 一种干压异性永磁铁氧体的制备方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737710A (ja) * 1993-07-20 1995-02-07 Tokin Corp 酸化物磁性材料の製造方法
CN1479928A (zh) * 2001-10-24 2004-03-03 Tdk��ʽ���� 氧化物磁性材料系永磁铁的制造方法
CN104091671A (zh) * 2014-06-03 2014-10-08 天长市昭田磁电科技有限公司 一种钛基稀土铁磁芯材料
CN106478085A (zh) * 2016-10-13 2017-03-08 中国科学院电工研究所 一种软磁铁氧体的制备方法
CN109369169A (zh) * 2018-12-10 2019-02-22 湖南航天磁电有限责任公司 一种减少干压成型锶铁氧体外径向多极磁环开裂的方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0737710A (ja) * 1993-07-20 1995-02-07 Tokin Corp 酸化物磁性材料の製造方法
CN1479928A (zh) * 2001-10-24 2004-03-03 Tdk��ʽ���� 氧化物磁性材料系永磁铁的制造方法
CN104091671A (zh) * 2014-06-03 2014-10-08 天长市昭田磁电科技有限公司 一种钛基稀土铁磁芯材料
CN106478085A (zh) * 2016-10-13 2017-03-08 中国科学院电工研究所 一种软磁铁氧体的制备方法
CN109369169A (zh) * 2018-12-10 2019-02-22 湖南航天磁电有限责任公司 一种减少干压成型锶铁氧体外径向多极磁环开裂的方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
陈来同等: "《生物化学产品制备技术 2》", 31 January 2004, 科学技术文献出版社 *
韩长日等: "《造纸用化学品生产工艺与技术》", 31 May 2019, 科学技术文献出版社 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114380588A (zh) * 2020-10-20 2022-04-22 海安南京大学高新技术研究院 一种干压异性永磁铁氧体的制备方法
CN112723871A (zh) * 2020-12-30 2021-04-30 南京瑞洋新材料科技有限公司 一种高磁性永磁铁氧体磁瓦及其制备方法
CN112723871B (zh) * 2020-12-30 2023-09-29 南京瑞洋新材料科技有限公司 一种高磁性永磁铁氧体磁瓦及其制备方法

Also Published As

Publication number Publication date
CN110483072B (zh) 2022-04-22

Similar Documents

Publication Publication Date Title
CN110483072A (zh) 永磁铁氧体以及永磁铁氧体用生物质粘结剂成型方法
CN102690109B (zh) 一种软磁镍铜锌铁氧体材料及其制备方法
CN102219486B (zh) 一种高温低损耗MnZn铁氧体磁心及其制造方法
CN103824668A (zh) 一种低重稀土高矫顽力烧结钕铁硼磁体及其制备方法
CN108046789B (zh) 一种电磁屏蔽复合材料的制备方法
CN100481281C (zh) 一种聚合物粘结成型烧结各向异性永磁铁氧体的方法
CN103058641B (zh) 一种制备非稀土高磁性永磁铁氧体材料的方法
CN104817319B (zh) 磁性料粉
CN102531638B (zh) 一种添加物及其降低压电陶瓷烧结温度的用途
CN102850599A (zh) 磁性壳聚糖/纳米Fe3O4复合材料及其制备方法和用途
CN105315508A (zh) 一种改性石墨烯-壳聚糖复合薄膜的制备方法
CN101259999A (zh) 高磁导率软磁铁氧体材料及其制造方法
CN108530653A (zh) 一种聚乙烯醇磁性水凝胶的制备方法
CN110183221A (zh) 超低温度磁导率稳定性的锰锌软磁铁氧体材料的制备方法
CN101412621B (zh) 高磁导率高饱和磁感应强度MnZn铁氧体材料及其制备方法
CN105845306A (zh) 一种节能电机用钕铁硼永磁材料及其制备方法
CN102582143A (zh) 低温磁瓷共烧复合基材及制备方法
CN109702853A (zh) 一种3d打印磁性陶瓷的方法及其制备的磁性陶瓷
CN103848621B (zh) 一种干压异性永磁材料的制造方法
CN106601408A (zh) 一种高性能磁性材料
CN113801632B (zh) 一种永磁铁氧体材料用分散剂及其制备方法和应用
CN114380588B (zh) 一种干压异性永磁铁氧体的制备方法
CN108373715B (zh) 一种具有甲醛净化功能的涂料及其制备方法
CN109943284A (zh) 一种吸波材料及其制备方法
CN103740959A (zh) 一种用于制备双高钕铁硼材料的合金添加物及其使用方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant