CN107892557A - The nickel zinc oxide NTC thermistor material of Li/Fe modifications - Google Patents
The nickel zinc oxide NTC thermistor material of Li/Fe modifications Download PDFInfo
- Publication number
- CN107892557A CN107892557A CN201710948170.6A CN201710948170A CN107892557A CN 107892557 A CN107892557 A CN 107892557A CN 201710948170 A CN201710948170 A CN 201710948170A CN 107892557 A CN107892557 A CN 107892557A
- Authority
- CN
- China
- Prior art keywords
- thermistor
- temperature
- ntc
- present
- room temperature
- 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
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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
- C04B41/51—Metallising, e.g. infiltration of sintered ceramic preforms with molten metal
- C04B41/5116—Ag or Au
-
- 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
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/85—Coating or impregnation with inorganic materials
- C04B41/88—Metals
-
- 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
- C04B2235/3201—Alkali metal oxides or oxide-forming salts thereof
- C04B2235/3203—Lithium 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
- C04B2235/327—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
- C04B2235/3284—Zinc oxides, zincates, cadmium oxides, cadmiates, mercury oxides, mercurates 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
- C04B2235/44—Metal salt constituents or additives chosen for the nature of the anions, e.g. hydrides or acetylacetonate
- C04B2235/442—Carbonates
-
- 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
Abstract
Meet the present invention relates to one kind and prepare the thermistor material with resistance negative temperature coefficient (NTC).The NTC thermistor material of the present invention forms using zinc-nickel oxide as main component, lithium and iron are submember component, is suitable for preparing sensitive ceramic resistor element, thin-film thermistor element.Material of the present invention can be by changing constituent content that the composition forms to adjust the material constant B values of thermistor element and room temperature resistance value, the regulation of achievable wide scope room temperature resistivity and wide range of material constant.The thermistor material of the present invention has the characteristics of stability is good, uniformity is good, reproducible; with the electrical characteristics such as resistance value, material constant, temperature-coefficient of electrical resistance it is controllable the characteristics of; suitable for temperature survey, temperature control and line build-out, and the protection of circuit and electronic component and flow, flow velocity, the instrument of radionetric survey and application field.
Description
Technical field
The present invention relates to the NTC temperature-sensitives that one kind prepares the thermistor element with resistance negative temperature coefficient (NTC) effect
Resistance material.Suitable for temperature survey, temperature control, line build-out, radionetric survey, flow velocity detector, and electronics member
The surge protection application field of part and circuit.
Background technology
Thermistor (temperature) sensor be varied with temperature using thermistor as key element, using the resistivity of thermistor and
The excellent specific property of change and manufactured device.The feature varied with temperature by resistivity, thermistor element mainly include resistance
The subzero temperature that positive temperature coefficient (PTC) thermistor element and resistivity that rate is raised and increased with temperature are raised and reduced with temperature
Spend two kinds of coefficient (NTC) thermistor element.NTC thermistor device is widely used to thermometric, temperature control, temperature-compensating, with
And the protection of circuit and electronic component and flow velocity, flow, the pertinent instruments and application field of radionetric survey.
Classify by temperature in use, NTC thermistor element has three kinds of low form, normal temperature type and high temperature modification thermistor.
It is current mainly to use AB made of the oxide of transition metal manganese, iron, cobalt, nickel, copper in normal temperature type NTC thermistor element2O4
Spinel structure NTC thermistor element.The NTC thermistor material of this spinel structure has obtained extensive research and should
With.Such as, the Mn-Ni-O ceramics system NTC thermo-sensitive materials that Chinese invention patent CN102627446A is announced；Chinese invention patent
The NTC temperature-sensitives electricity synthesized using the nitrate of manganese, nickel, magnesium, aluminium as raw material, using liquid-phase coprecipitation that CN1332405C is announced
Hinder material；The Fe-Ni-Mn-Cr-O systems NTC thermal sensitive ceramic materials that Chinese invention patent CN101585707A is announced；American invention
Manganese-nickel-cobalt-iron-copper system NTC thermo-sensitive materials of the publication of patent 6861622 description.These NTC thermistor materials are total to
It is same to be characterized in the oxide containing at least two transition metal, and using spinel-type cubic crystal structure as principal crystalline phase.
In using multicomponent NTC thermistor material made of transition metal manganese, iron, cobalt, nickel, Cu oxide, due to
The volatilization temperature of these transition metal oxides is relatively low, is easily caused in the preparation sintering process of this kind of NTC thermistor element
The volatilization of composition of raw material so that the repeatability between the ultimate constituent of product, homogeneity of product and production different batches is difficult to
Control.Generally, AB2O4The room temperature resistivity of the NTC thermistor of spinel structure relies primarily on the ion of lattice B positions
Valence state and concentration ratio (such as [Mn4+]/[Mn3++Mn4+]), concentration is higher, and resistivity is smaller.Therefore, the room temperature resistance of this kind of material
Rate is had a great influence by techniques such as sintering temperature, sintering atmosphere, cooling velocities, and it is larger to be easily caused relatively low homogeneity of product, and
Resistance value is not easy to.In AB2O4In the NTC thermistor material of spinel structure, temperature coefficient with room temperature resistivity drop
It is low and reduce, it is difficult to ensure to realize in similar temperature coefficient why a wide range of controllable adjustment of resistivity.It is meanwhile current extensive
The transistion metal compound NTC thermistor element with spinel structure of application, four sides is easily produced in use
Body and octahedra cationic slowly redistribute and cause structure Relaxation.This Relaxation Phenomena causes NTC ceramic material electricity
The unstable of performance is learned, the aging of thermistor element is easily caused, influences the usability such as the temperature measurement accuracy of thermistor (temperature) sensor
Energy.
In recent years, in order to develop new oxide base NTC thermistor material, scientific worker has also carried out some green woods
The exploration and research of material system.Six side BaTiO3Good NTC performances (Chinese invention patent ZL 2009 is presented in system
10043274.8；Chinese invention patent ZL 2,009 1 0303525.1), rutile-type SnO2Ceramics have good NTC characteristics
(electronic component and material, 2009,6:56-59；Journal of Materials Science:Materials in
Electronics,2015,26:6163-6169)；LaCoO3The NTC ceramic of based perovskite structure has been reported (Journal of
the European Ceramics Society,2000,20(14):2367-2376)。BaBiO3、BaSnO3、SrTiO3、
YMnO3And LaMnO3NTC thermistor (Journal of the are successfully made by the means such as doping, compound Deng material
American Ceramics Society,1997,80(8):2153-2156；Solid State Science,2006,8(2):
137-141).Research report, the CuO bases ceramics of doping vario-property also have good NTC temperature-sensitives property (Journal of recently
Materials Science:Materials in Electronics,2015,26(12):10151-10158；Chinese invention is special
Profit, number of patent application：201510360036.5、201610298467.8)；The NiO NTC thermistors material of doping vario-property with
And Y doping zinc-nickel oxide system (Chinese invention patent, number of patent application：201610298726.7、201610298669.2、
201610296987.5、201610306430.5)。
As the industries such as refrigerator, air-conditioning, microwave equipment, automobile, communication and Aero-Space are to the steady of NTC themistor
Qualitative requirement more and more higher, improves existing component system or exploitation novel components system just seems particularly significant.For above shape
Condition, the present invention are used using zinc-nickel composite oxides as main component, by the material of micro- doping vario-property, had
The thermistor material system of excellent NTC effects；In the system, temperature-sensitive can be adjusted by changing the content of doped chemical
The room temperature resistivity of resistive element and the NTC material constant B values of material.
The content of the invention
The NTC thermistor material with resistance negative temperature coefficient effect can be manufactured it is an object of the invention to provide a kind of
System.This thermistor material can adjust the room temperature resistivity of thermistor element by changing the content of doped chemical
With the thermal constant of material.
The NTC thermistor material of the present invention into being grouped into：(Ni1-xZnx)1-y-wLiyFewO, wherein x=0.0001
~0.4, y=0.0001~0.1, w=0~0.1.
The crucial composition of present invention composition NTC material is (ZnxNi1-x)1-y-wLiyFewO, in formula components containing zinc, nickel,
Lithium and ferrous metal element, its raw material can be the simple substance containing these elements or the oxide containing these elements, inorganic
The compound such as salt or organic salt.Wherein, semiconducting element lithium and iron are to adjust the room temperature resistivity of thermistor element.
The preparation method as described in the embodiment of the present invention can obtain the thing phase composition of high-purity single phase cubic crystallographic system, prepared
Stable performance, the reliability of NTC thermistor element are high.
The component prescription for focusing on thermistor material of the present invention, can pairing as needed in actual application
Adjusted accordingly into method and production technology, flexibility is big.For example, the simple substance containing these elements, oxygen can be selected in raw material
The compounds such as compound, inorganic salts or organic salt；Synthetic method can use solid state reaction, coprecipitation, sol-gel process, gas
Phase sedimentation or the preparation method of other ceramic materials are realized.
The performance detection of the NTC thermistor material of the present invention is to use coating silver paste as electrode, big by Central China science and technology
Room temperature resistance and the resistance for learning the R-T resistance-temperature characteristics test system measurement resistive element developed are special with the elevated change of temperature
Property.In actual production and application, electrode can select other materials such as aluminium electrode, In-Ga alloy electrodes or nickel electrode material, property
The tester that other resistance and resistance-temperature characteristic also can be selected can be tested.
The characteristic and Heterosis of NTC thermistor material of the present invention exist：1. material composition is simple, raw material are rich
It is rich, nontoxic, it is environment-friendly；2. it is adapted to the production of the NTC thermistor elements such as ceramics, film；3. adulterated by adjusting semiconducting
The content of element lithium and iron can adjust the room temperature resistance value, material constant and temperature coefficient of thermistor element on a large scale；4. lead to
The content of nickel in composition composition is overregulated, the material constant and temperature coefficient of temperature-sensitive element can be adjusted to a wide range.
The electrical property of NTC thermistor material of the present invention can realize following parameter request：Room temperature resistivity ρ25=1 Ω
cm-1~100M Ω cm-1, material constant B=2000~8400K.
Present disclosure is further described with the following Examples.Following examples simply meet the technology of the present invention
Several examples of content, do not illustrate the content described in present invention is limited only to following examples.The composition that focuses on of the present invention is matched somebody with somebody
Side, the raw material, process and step can be adjusted correspondingly according to actual production conditions, and flexibility is big.
Brief description of the drawings
Fig. 1 is that the resistivity log (ln ρ) of thermistor material in embodiment changes with inverse temperature (1000/T)
Arrhenius characteristic curves, the figure illustrate that typical NTC characteristics are presented in all embodiment materials.
Fig. 2 is room temperature resistivity logarithm (the ln ρ of thermistor material in each embodiment25) and NTC material constant block diagram.
NTC material constant calculates gained by 25 DEG C of -85 DEG C of temperature ranges of experiment measurement.The figure illustrates NTC thermistor material of the present invention
Material system can realize the regulation of large-scale room temperature resistivity, and keep higher NTC material constant B values.
Embodiment
Embodiment 1
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.3, y=0.005, w
=0.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, without lithium carbonate Li2CO3.Material system
The standby processing step for pressing following experiment：
(1) initial feed is pressed into (Ni0.7Zn0.3)0.995Li0.005O is formulated dispensing, and ZnO is weighed with assay balance
2.4300g、NiCO3.2Ni(OH)2.4H2O 8.7336g、Li2CO3 0.1185g。
(2) raw material that a upper processing step weighs are dissolved separately in 15% dust technology.
(3) three kinds of solution that a upper processing step is prepared are mixed, and it is mixed using the stirring of magnetic agitation heater
Close uniform, heat drying.
(4) Precursor Powder made from a upper processing step calcine in air ambient, heating rate is 5 DEG C/min,
Calcining heat is 1000 DEG C, is incubated 3 hours.
(5) a upper processing step is calcined to the powder of synthesis, is binding agent with previously prepared polyvinyl alcohol water solution, enters
Row is granulated, and is then pressed into base substrate；Base substrate is wafer type, and a diameter of 15 millimeters of disk, thickness is 2.5~3.0 millimeters.
(6) base substrate that a upper processing step obtains sinter in air ambient, sintering temperature is 1320 DEG C, insulation 2
Hour, heating rate is 5 DEG C per minute.Thus obtain NTC thermal sensitive ceramics pieces.
(7) by potsherd made from a upper processing step, it is 1.5~2.0 millimeters to grind off two sides top layer to thickness with sand paper,
And two sides polishes, it is coated with silver paste and makes electrode through 600 DEG C of solidifications.
(8) NTC thermistor element made from a upper processing step is subjected to resistance-temperature characteristics measurement.Prepared
Material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 2
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.3, y=0.015, w
=0.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, without lithium carbonate Li2CO3.Material system
The standby processing step for pressing following experiment：
(1) initial feed is pressed into (Ni0.7Zn0.3)0.985Li0.015O is formulated dispensing, weighs ZnO 2.4056g, NiCO3.2Ni
(OH)2.4H2O 8.6459g、Li2CO3 0.0554g。
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 3
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.2, y=0.025, w
=0.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, without lithium carbonate Li2CO3.Material system
The standby processing step for pressing following experiment：
(1) initial feed is pressed into (Ni0.8Zn0.2)0.975Li0.025O is formulated dispensing, weighs ZnO 1.5875g, NiCO3.2Ni
(OH)2.4H2O 9.7807g、Li2CO30.0924g；
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 4
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.3, y=0.03, w=
0.01.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, ironic citrate
FeC6H5O7.4H2O, without lithium carbonate Li2CO3.Material prepares the processing step by following experiment：
(1) initial feed is pressed into (Zn0.3Ni0.7)0.96Li0.03Fe0.01O be formulated dispensing, weigh ZnO 2.3446g,
NiCO3.2Ni(OH)2.4H2O 8.4264g、Li2CO3 0.1108g、FeC6H5O7.4H2O 0.3349g。
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 5
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.3, y=0.03, w=
0.015.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, ironic citrate
FeC6H5O7.4H2O, without lithium carbonate Li2CO3.Material prepares the processing step by following experiment：
(1) initial feed is pressed into (Zn0.3Ni0.7)0.955Li0.03Fe0.015O be formulated dispensing, weigh ZnO 2.3323g,
NiCO3.2Ni(OH)2.4H2O 8.3825g、Li2CO3 0.1108g、FeC6H5O7.4H2O 0.5024g。
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 6
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.3, y=0.03, w=
0.02.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, ironic citrate
FeC6H5O7.4H2O, without lithium carbonate Li2CO3.Material prepares the processing step by following experiment：
(1) initial feed is pressed into (Zn0.3Ni0.7)0.95Li0.03Fe0.02O be formulated dispensing, weigh ZnO 2.3201g,
NiCO3.2Ni(OH)2.4H2O 8.3387g、Li2CO3 0.1108g、FeC6H5O7.4H2O 0.6699g。
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
Embodiment 7
The present embodiment presses chemical molecular formula (Ni1-xZnx)1-y-wLiyFewO carries out dispensing, wherein x=0.1, y=0.03, w=
0.025.Initial raw materials are selected from zinc oxide ZnO, basic nickel carbonate NiCO3.2Ni(OH)2.4H2O, ironic citrate
FeC6H5O7.4H2O, without lithium carbonate Li2CO3.Material prepares the processing step by following experiment：
(1) initial feed is pressed into (Zn0.1Ni0.9)0.945Li0.03Fe0.025O be formulated dispensing, weigh ZnO 0.7693g,
NiCO3.2Ni(OH)2.4H2O 10.6647g、Li2CO3 0.1108g、FeC6H5O7.4H2O 0.8374g。
(2) preparation process is identical with processing step (2)~(8) in embodiment 1.
Prepared material property is as shown in table 1, Fig. 1 and Fig. 2.
The performance indications of the embodiment thermistor element of table 1
Claims (5)
1. a kind of negative temperature coefficient heat-sensitive resistance material, it is characterized in that the material into being grouped into (Ni1-xZnx)1-y- wLiyFewO, wherein x=0.0001~0.4, y=0.0001~0.1, w=0~0.1.
2. negative temperature coefficient heat-sensitive resistance material according to claim 1, the raw material for preparing this thermistor can be with
Be containing zinc, nickel, lithium, ferro element simple substance, oxide, inorganic salts, organic salt.
3. according to claim 1 and claim 2 into being grouped into (Ni1-xZnx)1-y-wLiyFewO oxide subzero temperature
Coefficient heat-sensitive resistance material is spent, it is characterized in that Zn content is in (Ni1-xZnx)1-y-wLiyFewThe span for being x in O compositions composition
By 0.0001 to 0.4.
4. according to claim 1, claim 2 and claim 3 into being grouped into (Ni1-xZnx)1-y-wLiyFewO's
Oxide negative temperature coefficient heat-sensitive resistance material, it is characterized in that adulterating elemental lithium to realize the room temperature resistivity of thermistor material
With the regulation of material constant, lithium doping content is in (Ni1-xZnx)1-y-wLiyFewO compositions composition in for y span by
0.0001 to 0.1.
5. according to the negative tempperature coefficient thermistor material described in claim 1, claim 2, claim 3 and claim 4
Material, it is characterized in that doping ferro element, to realize the regulation of the room temperature resistivity of thermistor material and material constant, Fe2O3 doping contains
Amount is in (Ni1-xZnx)1-y-wLiyFewO compositions composition in for w span by 0 to 0.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948170.6A CN107892557A (en) | 2017-10-12 | 2017-10-12 | The nickel zinc oxide NTC thermistor material of Li/Fe modifications |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710948170.6A CN107892557A (en) | 2017-10-12 | 2017-10-12 | The nickel zinc oxide NTC thermistor material of Li/Fe modifications |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107892557A true CN107892557A (en) | 2018-04-10 |
Family
ID=61803537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710948170.6A Pending CN107892557A (en) | 2017-10-12 | 2017-10-12 | The nickel zinc oxide NTC thermistor material of Li/Fe modifications |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107892557A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594200A (en) * | 2004-07-07 | 2005-03-16 | 清华大学 | Ni-Zn-O based thermal sensitive ceramic and its preparing method |
| CN105330277A (en) * | 2015-11-26 | 2016-02-17 | 广东风华高新科技股份有限公司 | Negative temperature coefficient thermistor raw material composition and application thereof |
| CN105967655A (en) * | 2016-05-06 | 2016-09-28 | 中南大学 | Lithium-iron-doped nickel oxide negative temperature coefficient (NTC) thermistor material |
| CN105967677A (en) * | 2016-05-11 | 2016-09-28 | 中南大学 | Novel zinc-nickel oxide NTC (negative temperature coefficient) thermosensitive resistor material |
-
2017
- 2017-10-12 CN CN201710948170.6A patent/CN107892557A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1594200A (en) * | 2004-07-07 | 2005-03-16 | 清华大学 | Ni-Zn-O based thermal sensitive ceramic and its preparing method |
| CN105330277A (en) * | 2015-11-26 | 2016-02-17 | 广东风华高新科技股份有限公司 | Negative temperature coefficient thermistor raw material composition and application thereof |
| CN105967655A (en) * | 2016-05-06 | 2016-09-28 | 中南大学 | Lithium-iron-doped nickel oxide negative temperature coefficient (NTC) thermistor material |
| CN105967677A (en) * | 2016-05-11 | 2016-09-28 | 中南大学 | Novel zinc-nickel oxide NTC (negative temperature coefficient) thermosensitive resistor material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105967656A (en) | Novel NTC thermistor material based on nickel oxide | |
| CN105967655B (en) | Lithium iron doped nickel oxide negative temperature coefficient thermistor material | |
| CN105967677A (en) | Novel zinc-nickel oxide NTC (negative temperature coefficient) thermosensitive resistor material | |
| CN105967675A (en) | Novel NTC thermistor material suitable for low temperature preparation | |
| CN107324799B (en) | Perovskite-like high-temperature thermistor material and preparation method thereof | |
| CN104987059B (en) | A kind of new NTC Thermistor Materials based on copper oxide | |
| Sun et al. | Characterization of new negative temperature coefficient thermistors based on Zn–Ni–O system | |
| CN107200563A (en) | Al Li optimization Ni Zn oxide negative temperature coefficient heat-sensitive resistance materials | |
| CN102682943A (en) | Method for producing medical high-precision negative temperature coefficient (NTC) thermosensitive resistors | |
| CN110372335A (en) | A kind of manganese nickel aluminium cobalt-based NTC thermistor material and preparation method thereof | |
| CN101580386B (en) | Thermal sensitive ceramic resistance material, resistance element and preparation method of resistance element | |
| CN103183508A (en) | NTC thermistor material as well as preparation method and application in electronic device | |
| US5858902A (en) | Semiconducting ceramic compounds having negative resistance-temperature characteristics with critical temperatures | |
| CN108329015A (en) | A kind of doping vario-property nickel oxide-base NTC thermistor material and preparation method thereof | |
| CN107857584A (en) | A kind of NTC thermistor material based on nickel magnesium-zinc oxide | |
| CN109265159A (en) | A kind of high-performance novel NTC thermistor material based on zinc oxide | |
| CN107892557A (en) | The nickel zinc oxide NTC thermistor material of Li/Fe modifications | |
| CN109796203A (en) | A kind of zno-based negative temperature coefficient heat-sensitive resistance material | |
| CN110304905A (en) | A kind of copper samarium is the NTC thermistor material and preparation method thereof of semiconducting | |
| CN110317045A (en) | A kind of manganese ferronickel cobalt-based NTC thermistor material and preparation method thereof | |
| Uppuluri et al. | Fabrication and characterization of screen printed NiMn2O4 spinel based thermistors | |
| CN110642603A (en) | Novel high-precision NTC (negative temperature coefficient) thermistor material based on nickel oxide | |
| KR100304984B1 (en) | Sub-temperature coefficient thermistor element manufacturing method and composition thereof for high temperature absolute humidity sensor | |
| KR101864007B1 (en) | Manufacturing Method of NMC negative temperature coefficient thermistor and NMC negative temperature coefficient thermistor thereby | |
| CN109734423A (en) | A kind of thermo-sensitive material of negative temperature coefficient 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 | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180410 |