CN109293343A - Pyromagnetic composite sensing resistance material of negative temperature coefficient and preparation method thereof - Google Patents

Pyromagnetic composite sensing resistance material of negative temperature coefficient and preparation method thereof Download PDF

Info

Publication number
CN109293343A
CN109293343A CN201810972113.6A CN201810972113A CN109293343A CN 109293343 A CN109293343 A CN 109293343A CN 201810972113 A CN201810972113 A CN 201810972113A CN 109293343 A CN109293343 A CN 109293343A
Authority
CN
China
Prior art keywords
pyromagnetic
temperature coefficient
resistance material
composite sensing
sensing resistance
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
CN201810972113.6A
Other languages
Chinese (zh)
Other versions
CN109293343B (en
Inventor
刘敬松
李惠琴
李大伦
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.)
Mianyang Gu Te Technology Co Ltd
Southwest University of Science and Technology
Original Assignee
Mianyang Gu Te Technology Co Ltd
Southwest University of Science and Technology
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 Mianyang Gu Te Technology Co Ltd, Southwest University of Science and Technology filed Critical Mianyang Gu Te Technology Co Ltd
Priority to CN201810972113.6A priority Critical patent/CN109293343B/en
Publication of CN109293343A publication Critical patent/CN109293343A/en
Application granted granted Critical
Publication of CN109293343B publication Critical patent/CN109293343B/en
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
    • C04B35/016—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 manganites
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/04—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient
    • H01C7/042—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having negative temperature coefficient mainly consisting of inorganic non-metallic substances
    • H01C7/043—Oxides or oxidic compounds
    • 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
    • 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
    • C04B2235/02—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
    • C04B2235/3279—Nickel oxides, nickalates, 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
    • C04B2235/3281—Copper oxides, cuprates or oxide-forming salts thereof, e.g. CuO or Cu2O
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Inorganic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • Thermistors And Varistors (AREA)
  • Magnetic Ceramics (AREA)

Abstract

Pyromagnetic composite sensing resistance material of negative temperature coefficient and preparation method thereof, belongs to electronic element device materials field.Resistance material of the invention by weight percentage, in terms of oxide, contains following component: Mn3O473~78%, Co2O310.5~13%, NiO 11.5~14%, CuO 0~0.5%.Fe is free of in formula of the invention, ensure that homogeneity is high under the conditions of high temperature sintering；Sintering temperature is lower, only 1140 DEG C, has certain power savings advantages；Raw material are sufficient at home, affordable, limit its large-scale production without too high cost.

Description

Pyromagnetic composite sensing resistance material of negative temperature coefficient and preparation method thereof
Technical field
The present invention relates to pyromagnetic composite sensing resistance materials of a kind of negative temperature coefficient and preparation method thereof, belong to electronics member device Part Material Field.
Background technique
Negative temperature coefficient (Negative Temperature Coefficient, NTC) thermistor material is a kind of electricity The resistance rate material reduced with the raising of temperature.Since it is with small in size, preparation method is simple, response is fast, high sensitivity, valence The advantages such as lattice are low are widely used in the fields such as temperature measurement, temperature control and temperature-compensating.
NTC thermistor material currently used for industrialized production is mainly with transiting metal oxidations such as Mn, Co, Ni, Fe, Cu Two or more in object is raw material, and thermistor material principal crystalline phase obtained is spinel structure, and only single Temperature sensitive properties.The present invention is compounded with magnetic field monitoring function on the basis of the function of common NTC thermistor.
Due to the element electronic configuration of iron-cobalt-nickel, the magnetic characteristic of these types of element is particularly pertinent, contains these elements Thermistor material be easy magnetization and magnetic conductivity with higher.The case where by monitoring magnetization, can effectively it reflect Magnetic field induction level locating for component.The function of monitoring NTC thermistor resultant field has greatly application Prospect.
Summary of the invention
The technical problem to be solved by the invention is to provide a kind of B value with higher, low-resistivity, it is low in cost simultaneously With good workability suitable for the pyromagnetic composite ceramic material of negative temperature coefficient of temperature control circuit and magnetic field measuring and its preparation Method.
The present invention solve the technical problem the technical solution adopted is that, the pyromagnetic composite sensing resistance material of negative temperature coefficient Material, which is characterized in that by mass percentage, in terms of oxide, contain following component:
Mn3O473~78wt.%, Co2O310.5~13wt.%, NiO 11.5~14wt.%, CuO 0~ 0.5wt.%.
The present invention also provides a kind of preparation methods of the pyromagnetic composite sensing resistance material of negative temperature coefficient, which is characterized in that Include the following steps:
(1) ingredient: raw material are weighed to obtain mixture by following mass percents:
Mn3O473~78wt.%, Co2O310.5~13wt.%, NiO 11.5~14wt.%, CuO 0~ 0.5wt.%；
(2) ball milling: above-mentioned mixture is put into ball mill, is discharged after ball milling；
(3) pre-burning: the drying powder that step 2 obtains is sieved with 100 mesh sieve, and is kept the temperature at 850 DEG C, is obtained powder；
(4) it is granulated: being granulated after powder made from step 3 is mixed with polyvinyl alcohol water solution, be granulated size Control 60 Mesh；
(5) form: by pellet be put into it is dry-pressing formed in molding die obtain green compact, after by green compact isostatic pressing；
(6) be sintered: the green compact after isostatic pressing are sintered 2~3 hours at 1100~1150 DEG C, with furnace natural cooling system Obtain the pyromagnetic composite sensing resistance material of negative temperature coefficient.
Further, the step (2) are as follows:
Ball milling: above-mentioned mixture is put into ball mill, using the zirconia ball of diameter 2mm as ball-milling medium, with deionized water For solvent, using 50wt% polyacrylic acid aqueous solution as dispersing agent, according to mixture: abrading-ball: the weight ratio of water be 1:3:1.5 into Row grinding 6 hours, discharging；
In the step (3), 1 hour is kept the temperature at 850 DEG C.
The pyromagnetic composite sensing resistance material of negative temperature coefficient of the invention has lower resistivity and higher through detection B value, certain magnetic conductivity and good machinability.
The negative temperature coefficient pyromagnetic composite sensing resistance material preparation method involved in the present invention arrived and traditional NTC are produced Technology is compared, and production process is essentially identical, and it is good that main feature is that of obtaining single crystal phase, compact structure and processing performance With lower sintering temperature pyromagnetic composite sensing ceramics.
Ceramics observe as shown in Figure 1 with scanning electron microscope sem, it can be seen that ceramic surface is smooth, comparatively dense.Together When determine the hysteresis loop of 5# sample, as shown in Figure 2.The resistance-temperature characteristic of 5# sample is as shown in Figure 3.
Compared with prior art, the invention has the characteristics that:
1, Fe is free of in formula of the invention, ensure that homogeneity is high under the conditions of high temperature sintering；
2, sintering temperature is lower, only 1140 DEG C, has certain power savings advantages；
3, raw material are sufficient at home, affordable, limit its large-scale production without too high cost.
Detailed description of the invention
Fig. 1 is pyromagnetic composite sensing resistor ceramic SEM photograph.
Fig. 2 is pyromagnetic composite sensing resistor ceramic hysteresis loop figure.
Fig. 3 is (25 DEG C/85 DEG C) of pyromagnetic composite sensing resistor ceramic resistance v. temperature and changes line chart of setting a song to music.
Specific embodiment
It follows the steps below to implement, each group becomes a kind of embodiment in table 1, table 2.
Step 1:
In each raw material of ratio precise in table 1；
Step 2:
Above-mentioned mixture is put into ball mill, is molten with deionized water using the zirconia ball of diameter 2mm as ball-milling medium Agent, using 50wt% polyacrylic acid aqueous solution as dispersing agent, according to mixture: abrading-ball: the weight ratio of water is that 1:3:1.5 is ground Mill 6 hours, discharging；
Step 3:
The drying powder that second step obtains is sieved with 100 mesh sieve, is placed in corundum crucible, 1 hour is kept the temperature at 850 DEG C and synthesizes NixCoyMn3-x-yO4Powder；
Step 4:
It is granulated after dry powder made from third step is mixed with 10wt% polyvinyl alcohol water solution, is granulated size Control and exists 60 mesh；
Step 5:
By pellet be put into molding die it is dry-pressing formed under 100MPa pressure obtain green compact, after by green compact in 200MPa press Isostatic pressing under power；
Step 6:
Green compact after isostatic pressing are sintered 3 hours at 1140 DEG C, and it is pyromagnetic that negative temperature coefficient is made with furnace natural cooling Composite sensing resistance material.
Step 7: the pyromagnetic composite sensing resistor ceramic of negative temperature coefficient obtained is cut into 1mm × 1mm × 0.5mm (length x width x thickness) size, it is two-sided polish flat, polish after paint medium temperature silver paste, complete silver in 550 DEG C of calcining 20min Electrode fabrication.
Test result is as shown in table 2.
1 Ni of tablexCoyMn3-x-yO4Pyromagnetic composite sensing ceramics composition
2 Ni of tablexCoyMn3-x-yO4Pyromagnetic composite sensing ceramic performance (maximum magnetic field strength 6000Oe)

Claims (4)

1. the pyromagnetic composite sensing resistance material of negative temperature coefficient, which is characterized in that by weight percentage, in terms of oxide, contain Following component:
Mn3O473~78%, Co2O310.5~13%, NiO 11.5~14%, CuO 0~0.5%.
2. the preparation method of the pyromagnetic composite sensing resistance material of negative temperature coefficient, which is characterized in that include the following steps:
(1) ingredient: raw material are weighed to obtain mixture by following mass percents:
Mn3O473~78wt.%, Co2O30~0.5wt.% of 10.5~13wt.%, NiO 11.5~14wt.%, CuO.；
(2) ball milling: above-mentioned mixture is put into ball mill, is discharged after ball milling；
(3) pre-burning: the drying powder that step 2 obtains is sieved with 100 mesh sieve, and is kept the temperature at 850 DEG C, is obtained powder；
(4) it is granulated: being granulated after powder made from step 3 is mixed with polyvinyl alcohol water solution, be granulated size Control in 60 mesh；
(5) form: by pellet be put into it is dry-pressing formed in molding die obtain green compact, after by green compact isostatic pressing；
(6) be sintered: the green compact after isostatic pressing are sintered 2~3 hours at 1100~1150 DEG C, are made negative with furnace natural cooling The pyromagnetic composite sensing resistance material of temperature coefficient.
3. the preparation method of the pyromagnetic composite sensing resistance material of negative temperature coefficient as claimed in claim 2, which is characterized in that institute State step (2) are as follows:
Ball milling: putting into ball mill for above-mentioned mixture, is molten with deionized water using the zirconia ball of diameter 2mm as ball-milling medium Agent, using 50wt% polyacrylic acid aqueous solution as dispersing agent, according to mixture: abrading-ball: the weight ratio of water is that 1:3:1.5 is ground Mill 6 hours, discharging.
4. the preparation method of the pyromagnetic composite sensing resistance material of negative temperature coefficient as claimed in claim 2, which is characterized in that institute It states in step (3), keeps the temperature 1 hour at 850 DEG C.
CN201810972113.6A 2018-08-24 2018-08-24 Negative temperature coefficient thermomagnetic composite sensitive resistance material and preparation method thereof Active CN109293343B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810972113.6A CN109293343B (en) 2018-08-24 2018-08-24 Negative temperature coefficient thermomagnetic composite sensitive resistance material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810972113.6A CN109293343B (en) 2018-08-24 2018-08-24 Negative temperature coefficient thermomagnetic composite sensitive resistance material and preparation method thereof

Publications (2)

Publication Number Publication Date
CN109293343A true CN109293343A (en) 2019-02-01
CN109293343B CN109293343B (en) 2021-06-25

Family

ID=65165610

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810972113.6A Active CN109293343B (en) 2018-08-24 2018-08-24 Negative temperature coefficient thermomagnetic composite sensitive resistance material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN109293343B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115925391A (en) * 2023-01-04 2023-04-07 山东中厦电子科技有限公司 High-capacitance power type thermosensitive material and preparation method thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02128150A (en) * 1988-11-07 1990-05-16 Ngk Spark Plug Co Ltd Perhydroxide detector
JPH04247603A (en) * 1991-02-04 1992-09-03 Murata Mfg Co Ltd Ntc thermistor element and manufacture thereof
CN1305197A (en) * 2000-11-11 2001-07-25 中国科学院新疆物理研究所 Wafer-type thermosensitive oxide resistor
CN101118793A (en) * 2007-09-12 2008-02-06 山东中厦电子科技有限公司 Low electric resistivity high B values negative temperature coefficient thermistor chip and manufacturing method therefor
CN103073278A (en) * 2013-01-30 2013-05-01 广州新莱福磁电有限公司 Manufacturing method of high-precision and high-reliability NTC thermistor chip
CN105289691A (en) * 2015-11-16 2016-02-03 西南科技大学 Preparation for porous negative-temperature-coefficient temperature-sensitive catalyst and usage method
CN106336210A (en) * 2016-08-28 2017-01-18 广西小草信息产业有限责任公司 Chip for integrated system and manufacturing method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02128150A (en) * 1988-11-07 1990-05-16 Ngk Spark Plug Co Ltd Perhydroxide detector
JPH04247603A (en) * 1991-02-04 1992-09-03 Murata Mfg Co Ltd Ntc thermistor element and manufacture thereof
CN1305197A (en) * 2000-11-11 2001-07-25 中国科学院新疆物理研究所 Wafer-type thermosensitive oxide resistor
CN101118793A (en) * 2007-09-12 2008-02-06 山东中厦电子科技有限公司 Low electric resistivity high B values negative temperature coefficient thermistor chip and manufacturing method therefor
CN103073278A (en) * 2013-01-30 2013-05-01 广州新莱福磁电有限公司 Manufacturing method of high-precision and high-reliability NTC thermistor chip
CN105289691A (en) * 2015-11-16 2016-02-03 西南科技大学 Preparation for porous negative-temperature-coefficient temperature-sensitive catalyst and usage method
CN106336210A (en) * 2016-08-28 2017-01-18 广西小草信息产业有限责任公司 Chip for integrated system and manufacturing method thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
贾素兰等: "ZnO-CuO掺杂对Mn-Co-O系NTC热敏电阻微观结构与电性能的影响 ", 《电子元件与材料》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115925391A (en) * 2023-01-04 2023-04-07 山东中厦电子科技有限公司 High-capacitance power type thermosensitive material and preparation method thereof
CN115925391B (en) * 2023-01-04 2023-07-04 山东中厦电子科技有限公司 High-capacitance power type thermosensitive material and preparation method thereof

Also Published As

Publication number Publication date
CN109293343B (en) 2021-06-25

Similar Documents

Publication Publication Date Title
CN105967656B (en) Novel NTC thermistor material based on nickel oxide
CN108706968B (en) Low-temperature sintered direct-current bias resistant NiCuZn ferrite and preparation method thereof
CN103193474A (en) Novel negative-temperature coefficient thermistor material and preparation method thereof
CN101613199A (en) A kind of high-performance zinc oxide composite ceramic voltage dependent resistor material and preparation method
CN110550947A (en) yttrium and zirconium co-doped wide-temperature-zone high-temperature thermistor material and preparation method thereof
CN102964119B (en) Low-temperature-sintered BiFeO3-based high-performance negative-temperature-coefficient thermosensitive ceramic material and preparation method thereof
CN103073267B (en) NTC (negative temperature coefficient) thermal-sensitive material with low resistivity and high B-value and preparation method thereof
CN101284730A (en) Non-bismuth additive ZnO Low-voltage Varistor Ceramics and method for making same
CN107226681A (en) A kind of anti-aging NTC thermal sensitive ceramic materials of low-resistivity and preparation method thereof
CN109293343A (en) Pyromagnetic composite sensing resistance material of negative temperature coefficient and preparation method thereof
CN110372335A (en) A kind of manganese nickel aluminium cobalt-based NTC thermistor material and preparation method thereof
CN109592983A (en) A kind of highly thermally conductive liquid phase sintering silicon carbide ceramic and preparation method thereof
CN110317045A (en) A kind of manganese ferronickel cobalt-based NTC thermistor material and preparation method thereof
CN108793993B (en) Single-phase ceramic target material and preparation method and application thereof
CN110698189A (en) Lanthanum ion doped deep low temperature thermistor material and preparation method thereof
CN107129284B (en) High-performance multi-temperature-zone NTC thermistor medium material and preparation method thereof
CN109516780A (en) A kind of high-stability negative temperature coefficient heat-sensitive resistance material and preparation method thereof
CN107140965B (en) Negative temperature coefficient thermosensitive material with high resistivity and low B value and preparation method thereof
CN109485402A (en) A method of improving manganese ferro-cobalt base thermal sensitive ceramics agglutinating property
CN108774057A (en) A kind of NiCuZn gyromagnetic ferrite materials and preparation method thereof for LTCC circulators
CN113979728A (en) Preparation method of double perovskite type and yttrium oxide compounded negative temperature coefficient thermistor material
CN112537952B (en) Bismuth ferrite-based ceramic with excellent magnetoelectric performance and preparation method thereof
CN103787652B (en) Novel diphase NTC (negative temperature coefficient) thermistor material and preparation method thereof
CN116768626B (en) PbNb (PbNb) material 2 O 6 Base piezoelectric ceramic material and preparation method thereof
CN111559911B (en) High-sensitivity negative temperature coefficient thermistor material and preparation method thereof

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