CN110357586A - 一种一致性好的ntc热敏电阻材料及其制备方法 - Google Patents

一种一致性好的ntc热敏电阻材料及其制备方法 Download PDF

Info

Publication number
CN110357586A
CN110357586A CN201910508204.9A CN201910508204A CN110357586A CN 110357586 A CN110357586 A CN 110357586A CN 201910508204 A CN201910508204 A CN 201910508204A CN 110357586 A CN110357586 A CN 110357586A
Authority
CN
China
Prior art keywords
ntc thermistor
mass percent
ball milling
thermistor
consistency
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.)
Pending
Application number
CN201910508204.9A
Other languages
English (en)
Inventor
王明东
戴文金
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.)
Shandong Greentec Electric Technology Co Ltd
Original Assignee
Shandong Greentec Electric Technology Co Ltd
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 Shandong Greentec Electric Technology Co Ltd filed Critical Shandong Greentec Electric Technology Co Ltd
Priority to CN201910508204.9A priority Critical patent/CN110357586A/zh
Publication of CN110357586A publication Critical patent/CN110357586A/zh
Pending legal-status Critical Current

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
    • 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
    • C04B35/6261—Milling
    • C04B35/62615—High energy or reactive ball milling
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3217—Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
    • C04B2235/3225—Yttrium oxide or oxide-forming salts 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3231—Refractory metal oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3251—Niobium oxides, niobates, tantalum oxides, tantalates, or oxide-forming salts 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/3262—Manganese oxides, manganates, rhenium oxides or oxide-forming salts thereof, e.g. MnO
    • C04B2235/3263—Mn3O4
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3272—Iron oxides or oxide forming salts thereof, e.g. hematite, magnetite
    • 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
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
    • C04B2235/327—Iron group oxides, their mixed metal oxides, or oxide-forming salts thereof
    • C04B2235/3275—Cobalt oxides, cobaltates or cobaltites or oxide forming salts thereof, e.g. bismuth cobaltate, zinc cobaltite
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/74—Physical characteristics
    • C04B2235/77—Density
    • 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
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
    • C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Compositions Of Oxide Ceramics (AREA)

Abstract

本发明公开了一种一致性好的NTC热敏电阻材料及其制备方法，属于电子信息功能材料与器件技术领域。本发明以锰钴铁铝的氧化物为主要成分组成、钇钽为半导化掺杂元素，采用固相反应法制备，通过球磨、烘干、预烧、二次球磨、烘干、粉碎过筛等工序来制备。可用于制作NTC热敏电阻、薄膜NTC热敏电阻、叠层NTC热敏电阻。本发明材料可以通过改变半导化掺杂元素的含量调节热敏电阻元件的材料常数值和室温电阻值大小，可实现宽范围室温电阻率和宽范围材料常数的调节。本发明的热敏电阻材料具有稳定性好，具有电阻值、材料常数、电阻温度系数等电气特性可控的特点，适用于温度测量、温度控制和线路补偿，以及电路和电子元件的保护以及流量、流速、射线测量的仪器与应用领域。

Description

一种一致性好的NTC热敏电阻材料及其制备方法
技术领域
本发明属于电子信息功能材料与器件技术领域，具体涉及一种一致性好的NTC热敏电阻材料及其制备方法。
背景技术
NTC(Negative Temperature Coefficient)是指随温度上升电阻呈指数关系减小、具有负温度系数的热敏电阻现象和材料。该材料是利用锰、铜、硅、钴、铁、镍、锌等两种或两种以上的金属氧化物进行充分混合、成型、烧结等工艺而成的半导体陶瓷，可制成具有负温度系数(NTC)的热敏电阻。其电阻率和材料常数随材料成分比例、烧结气氛、烧结温度和结构状态不同而变化。现在还出现了以碳化硅、硒化锡、氮化钽等为代表的非氧化物系NTC热敏电阻材料。
NTC热敏电阻器的发展经历了漫长的阶段。1834年，科学家首次发现了硫化银有负温度系数的特性。1930年，科学家发现氧化亚铜-氧化铜也具有负温度系数的性能，并将之成功地运用在航空仪器的温度补偿电路中。随后，由于晶体管技术的不断发展，热敏电阻器的研究取得重大进展。1960年研制出了NTC热敏电阻器。NTC热敏电阻器广泛用于测温、控温、温度补偿等方面。
功率型NTC热敏电阻多用于电源抑制浪涌。抑制浪涌用NTC热敏电阻器，是一种大功率的圆片式热敏电阻器，常用于有电容器、加热器和马达启动的电子电路中。
在电路电源接通瞬间，电路中会产生比正常工作时高出许多倍的浪涌电流，而NTC热敏电阻器的初始阻值较大，可以抑制电路中过大的电流，从而保护其电源电路及负载。当电路进入正常工作状态时，热敏电阻器由于通过电流而引起阻体温度上升，电阻值下降至很小，不会影响电路的正常工作。
发明内容
本发明的目的是提供一种一致性好的NTC热敏电阻材料及其制备方法。
本发明解决所述技术问题采用的技术方案如下：
本发明的NTC热敏电阻材料由主晶相材料和掺杂相材料经球磨混合、预烧、掺杂球磨、压滤烘干制成。其中：所述主晶相材料为Mn3O4质量百分比为40～ 60％，Co2O3质量百分比为25～35％，Fe2O3质量百分比为10～20％，Al2O3质量百分比为10～20％；所述掺杂相材料Y2O3，质量百分比为0.1～2％，Ta2O5质量百分比为0.1～2％。
所述主晶相材料中Mn、Co、Fe、Al之间的摩尔比为1-x-y-z：x：y：z，x为0.2～0.4，y为0.1～0.3，z为0.1～0.3。
所述掺杂相材料为稀土氧化物，Y2O3质量百分比为0.1～2％，Ta2O5质量百分比为0.1～2％。
一种一致性好的NTC热敏电阻材料的制备方法，包括如下步骤：
（1）、主晶相材料制备，按摩尔比称量Mn3O4、Co2O3、Fe2O3、Al2O3，按料：球：水的比例1：2：0.8进行球磨，压滤烘干后，在910/6H条件下预烧。
（2）、预烧后的主晶相材料，粉碎后按1：0.1～2％的比例添加掺杂相材料Y2O3及Ta2O5，按步骤一的条件进行二次球磨，压滤烘干，然后粉碎过筛。
本发明组成NTC材料的关键组成为Mn1-x-y-zCoxFeyAlz，配方成分中含有锰、钴、铁、铝和钇、钽元素，制备这种热敏电阻的原材料Mn、Co、Fe、Al、Y、Ta是含这些元素的氧化物。其中，半导化元素钇、钽是为了调整热敏电阻元件的室温电阻率，元素铁、铝是用于调节热敏电阻元件的室温电阻率和体现热敏特性的材料常数与温度系数，同时铝的引入也可以增强热敏电阻的烧结性。
本发明的主要重点在于热敏电阻材料的成分配方，实际应用过程中可以根据需要对合成方法和生产工艺进行相应调整，灵活性大。合成方法可采用固相反应法、溶胶-凝胶法、共沉淀法、气相沉积法或其它陶瓷材料的合成方法来实现。本发明选用适于工业大生产的固相反应法，利于生产成本降低。
本发明的热敏电阻材料特性的检测是采用涂覆银浆，高温烧渗为电极，测量元件的室温电阻及电阻-温度特性。
本发明涉及的NTC热敏电阻材料的特色和优势表现在：①材料成分简单，原材料比较丰富，环境友好；②制备过程中烧结温度较低，适合陶瓷元件、薄膜、片式等NTC热敏电阻元件的生产；③材料以稀土元素钇、钽作为半导化掺杂元素；④通过调整半导化掺杂元素钇、钽的含量可大范围调整热敏电阻元件的室温电阻值；⑤通过调节成分组成中铁、铝的含量，可以较大范围地调节热敏元件的材料常数与温度系数。
本发明NTC热敏电阻材料的电性能可实现以下参数要求：室温电阻率ρ25＝650±4%Ω·mm-1，B值＝4700±1%。
本发明的内容结合以下实施例作进一步的说明。以下实施例只是符合本发明技术内容的几个实例，并不说明本发明仅限于下述实例所述的内容。本发明的重点在于成分配方，所述原材料、工艺方法和步骤可以根据实际生产条件进行相应的调整，灵活性大。
具体实施方式
本发明采用分析纯度的MnCO3、Co2O3、Fe2O3、Al2O3为原料制备主晶相，以纯度为4N的Y2O3、Ta2O5进行掺杂，具体实施方式如下：按表1称量配料，将混合料放入搅拌式球磨罐中，按料球水质量比1:2:0.8，球磨2～6小时，转速为260 转/分钟。粒度控制在D50=1.2μm以内，将球磨混好的料压滤，放于100℃烘箱烘干，粉碎后过40目筛，在箱式电阻炉中按910℃/6H条件预烧，粉碎后过40目筛备用；按表1中的比例添加掺杂相材料Y2O3、Ta2O5进行二次球磨、压滤、烘干，粉碎后过80目筛，加PVA 造粒，用手动压机20MPa 成型Φ12.2mm×2mm 圆片。将生坯样置于烧结炉中，1250℃/4H条件下，烧结成热敏陶瓷样品，涂银后在850℃/10M条件下烧渗，通过恒温油槽、精密电阻仪、千分尺等对样品进行性能测试。
本发明具体实施例成瓷密度、电阻率、B值结果详细见表2。
表一 各实例中原料的百分比
编号 Mn<sub>3</sub>O<sub>4</sub> Co<sub>2</sub>O<sub>3</sub> Fe<sub>2</sub>O<sub>3</sub> Al<sub>2</sub>O<sub>3</sub> Y<sub>2</sub>O<sub>3</sub> Ta<sub>2</sub>O<sub>5</sub>
实例1 51.6 23.4 12.8 12.2 / /
实例2 51.6 23.4 12.8 12.2 0.2 /
实例3 51.6 23.4 12.8 12.2 / 0.2
实例4 51.6 23.4 12.8 12.2 0.2 0.2
实例5 51.6 23.4 12.8 12.2 0.5 0.5
表2 各实例的样品性能
编号 瓷体密度 电阻率 B值
实例1 5.12 688 4512
实例2 5.12 674 4568
实例3 5.12 672 4571
实例4 5.11 661 4653
实例5 5.11 656 4695

Claims (4)

1.一种一致性好的NTC热敏电阻材料，其特征在于由主晶相材料和掺杂相材料经球磨混合、预烧、掺杂球磨、压滤烘干制成；
其中：所述主晶相材料为Mn3O4质量百分比为40～60％，Co2O3 质量百分比为25～ 35％，Fe2O3质量百分比为10～20％，Al2O3质量百分比为10～20％；所述掺杂相材料Y2O3，质量百分比为0.1～2％，Ta2O5质量百分比为0.1～2％。
2.根据权利要求1 所述的一种一致性好的NTC热敏电阻材料，其特征在于，所述主晶相材料中Mn、Co、Fe、Al之间的摩尔比为1-x-y-z∶x∶y∶z，x为0.2～0.4，y为0.1～0.3，z为0.1～0.3。
3.根据权利要求1 所述的一种一致性好的NTC热敏电阻材料，其特征在于，所述掺杂相材料为稀土氧化物，Y2O3质量百分比为0.1～2％，Ta2O5质量百分比为0.1～2％。
4.一种一致性好的NTC热敏电阻材料的制备方法，包括如下步骤：主晶相材料制备，按摩尔比称量Mn3O4、Co2O3、Fe2O3、Al2O3，按料∶球∶水的比例1∶2∶0.8进行球磨，压滤烘干后，在910/6H条件下预烧；预烧后的主晶相材料，粉碎后按1∶0.1～2％的比例添加掺杂相材料Y2O3及Ta2O5，按步骤一的条件进行二次球磨，压滤烘干，然后粉碎过筛。
CN201910508204.9A 2019-06-13 2019-06-13 一种一致性好的ntc热敏电阻材料及其制备方法 Pending CN110357586A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910508204.9A CN110357586A (zh) 2019-06-13 2019-06-13 一种一致性好的ntc热敏电阻材料及其制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910508204.9A CN110357586A (zh) 2019-06-13 2019-06-13 一种一致性好的ntc热敏电阻材料及其制备方法

Publications (1)

Publication Number Publication Date
CN110357586A true CN110357586A (zh) 2019-10-22

Family

ID=68216083

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910508204.9A Pending CN110357586A (zh) 2019-06-13 2019-06-13 一种一致性好的ntc热敏电阻材料及其制备方法

Country Status (1)

Country Link
CN (1) CN110357586A (zh)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07282626A (ja) * 1993-08-30 1995-10-27 Kyocera Corp 高周波用誘電体磁器組成物
JP2003257706A (ja) * 2002-03-05 2003-09-12 Tdk Corp 温度特性直線化補償用サーミスタ組成物
JP2005179144A (ja) * 2003-12-22 2005-07-07 Tdk Corp 圧電磁器およびその製造方法
CN101544493A (zh) * 2009-04-30 2009-09-30 中南大学 一种ntc电阻材料及制作方法
CN109665831A (zh) * 2018-11-15 2019-04-23 肇庆市金龙宝电子有限公司 一种低温烧结高稳定ntc热敏电阻体及其制备方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07282626A (ja) * 1993-08-30 1995-10-27 Kyocera Corp 高周波用誘電体磁器組成物
JP2003257706A (ja) * 2002-03-05 2003-09-12 Tdk Corp 温度特性直線化補償用サーミスタ組成物
JP2005179144A (ja) * 2003-12-22 2005-07-07 Tdk Corp 圧電磁器およびその製造方法
CN101544493A (zh) * 2009-04-30 2009-09-30 中南大学 一种ntc电阻材料及制作方法
CN109665831A (zh) * 2018-11-15 2019-04-23 肇庆市金龙宝电子有限公司 一种低温烧结高稳定ntc热敏电阻体及其制备方法

Similar Documents

Publication Publication Date Title
CN113053560B (zh) 一种高性能厚膜电阻器用电阻浆料
WO2019096335A1 (zh) 一种复合型热敏电阻材料及其制备方法和应用
CN105967656B (zh) 一种基于氧化镍的新型ntc热敏电阻材料
CN110372335A (zh) 一种锰镍铝钴基ntc热敏电阻材料及其制备方法
CN113087495A (zh) 一种ntc热敏材料及其制备方法与应用
US3510820A (en) Thermistor
CN110317045A (zh) 一种锰镍铁钴基ntc热敏电阻材料及其制备方法
CN103073267B (zh) 一种低电阻率、高b值负温度系数热敏材料及其制备方法
CN108395217A (zh) 一种铌掺杂锰镍基负温度系数热敏电阻及其制备方法
CN110304905A (zh) 一种铜钐为半导化的ntc热敏电阻材料及其制备方法
CN104987059B (zh) 一种基于氧化铜的新型ntc热敏电阻材料
CN104347202B (zh) 一种厚膜负温度系数电阻浆料的制备方法
JP7451277B2 (ja) サーミスタ焼結体および温度センサ素子
CN110357609A (zh) 一种钕铌为半导化的ntc热敏电阻材料及其制备方法
CN108484159B (zh) 一种钛酸钡基ntc/ptc双功能陶瓷材料及其制备方法与应用
CN110357586A (zh) 一种一致性好的ntc热敏电阻材料及其制备方法
CN107140965B (zh) 一种高电阻率、低b值负温度系数热敏材料及其制备方法
CN107129284B (zh) 一种高性能多温区ntc热敏电阻器介质材料及其制备方法
CN111386581A (zh) 热敏电阻烧结体及温度传感器元件
CN107365153B (zh) 一种高性能ntc热敏陶瓷材料及其制备方法与应用
CN114394819B (zh) 一种高可靠性片式ntc热敏电阻材料及其制备方法及用途
CN110372334A (zh) 一种稳定性好的ntc热敏电阻材料及其制备方法
JPH02143502A (ja) Ｎｔｃサーミスタの製造方法
CN113979728A (zh) 一种双钙钛矿型与氧化钇复合的负温度系数热敏电阻材料的制备方法
CN112088411B (zh) 热敏电阻烧结体及温度传感器元件

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
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20191022

WD01 Invention patent application deemed withdrawn after publication