CN102976747A - Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof - Google Patents

Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof Download PDF

Info

Publication number
CN102976747A
CN102976747A CN2012105496339A CN201210549633A CN102976747A CN 102976747 A CN102976747 A CN 102976747A CN 2012105496339 A CN2012105496339 A CN 2012105496339A CN 201210549633 A CN201210549633 A CN 201210549633A CN 102976747 A CN102976747 A CN 102976747A
Authority
CN
China
Prior art keywords
temperature coefficient
barium titanate
positive temperature
resistance material
hours
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
CN2012105496339A
Other languages
Chinese (zh)
Inventor
覃远东
方亮
常宝成
吴枚霞
徐�明
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.)
GUANGXI NEW FUTURE INFORMATION INDUSTRY Co Ltd
Guilin University of Technology
Original Assignee
GUANGXI NEW FUTURE INFORMATION INDUSTRY Co Ltd
Guilin University of 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 GUANGXI NEW FUTURE INFORMATION INDUSTRY Co Ltd, Guilin University of Technology filed Critical GUANGXI NEW FUTURE INFORMATION INDUSTRY Co Ltd
Priority to CN2012105496339A priority Critical patent/CN102976747A/en
Publication of CN102976747A publication Critical patent/CN102976747A/en
Pending legal-status Critical Current

Links

Landscapes

  • Compositions Of Oxide Ceramics (AREA)
  • Thermistors And Varistors (AREA)

Abstract

The invention discloses a lithium niobate doped barium titanate based positive temperature coefficient resistance material and a preparation method thereof. The chemical composition general formula of the barium titanate based positive temperature coefficient resistance material is as follows: Ba[1-x]LixTi[1-x]NbxO3, wherein x is more than 0 and not more than 0.08, and x is a molar fraction. The preparation method comprises the following steps: (1) weighing and preparing original BaCO3, TiO2, Li2CO3 and Nb2O5 powders with the purity of above 99.9% according to Ba[1-x]LixTi[1-x]NbxO3, wherein x is more than 0 and not more than 0.08 and x is the molar fraction; and (2) performing ball milling on the prepared ball material in the step (1) for 4 hours, pre-burning at the temperature of 1000-1100 DEG C for 2 hours, further performing ball milling for 3 hours, granulating, tabletting, dispensing glue, calcining at the temperature of 1150-1250 DEG C for 3 hours and loading an electrode to prepare the lithium niobate doped barium titanate based positive temperature coefficient resistance material. The barium titanate based positive temperature coefficient resistance material disclosed by the invention can achieve the practical level from the two aspects of ingredients and process and is suitable for industrial large-scale production; and the prepared resistance material is lead-free, thereby avoiding the harm to physical health of people and the environmental pollution.

Description

Barium titanate-based positive temperature coefficient resistance material of doped lithium columbate and preparation method thereof
Technical field
The present invention relates to barium titanate-based positive temperature coefficient resistance material of a kind of doped lithium columbate and preparation method thereof, belong to the thermo-sensitive material field.
Background technology
PTC pottery (positive temperature coefficient thermal sensitive ceramic) has the advantages that resistivity raises and increases with temperature.It is rapidly one of electronic material of development in recent years.Posistor can be divided into switching mode and offset-type two large classes, and its characteristic and application is also different.Switching mode positive temperature coefficient thermo-sensitive material is mainly used in the protection etc. of the rectifier cell of motor, transformer, bearing, high-power silicon, and it also is applied to the aspects such as current limliting, current stabilization, voltage stabilizing and velocity measurement as the hear rate element.Offset-type positive temperature coefficient thermo-sensitive material can be used as the temperature compensation of transistor.
The barium titanate-based positive temperature coefficient thermo-sensitive material is a kind of Ferro-Electric Semiconductor material, is rapidly one of electronic material of development in recent years.But the Curie temperature of barium titanate only has 120 ℃, and the PTC thermo-sensitive material of Curie temperature above 120 ℃ all is leaded in the market.Improving barium titanate positive temperature coefficient transition temperature both at home and abroad mainly is to realize by adding lead element.Although this kind method and technology is ripe and obtained preferably effect, lead has very strong toxicity.Products containing lead is from being prepared into use and even all having very strong harm to last recycling use.Begun in 2006 in the world to completely forbid to use plumbous piezo component has been arranged.In recent years, along with the demand of environment protection and human kind sustainable development, research novel lead-free PTC resistive material is extremely urgent.Nowadays unleaded positive temperature coefficient thermo-sensitive material mainly is macromolecular material, but because the hot mastication of macromolecular material has limited its use range greatly.So seeking unleaded high-curie temperature positive temperature coefficient thermo-sensitive material tool has very important significance.There are a lot of Chinese patents to report environment-friendly type positive temperature coefficient thermo-sensitive material, such as (Ba xSr yCa z) Ti uO 3, wherein, x:0.6～0.9, y:0～0.3, z:0.02～0.2, u:0.98～1.02; : (Bi 1/2K 1/2-a/2Na A/2) Ce 1-bDbO 3, a=0～1 wherein, b=0.0005～0.005 etc., but Curie temperature not high (being lower than 160 ℃).Tang Xingui etc. have reported BaTiO 3-Bi 0.5Na 0.5TiO 3-Bi 0.5K 0.5TiO 3Be the positive temperature coefficient thermo-sensitive material, its Integrated using sol-gel method, solid reaction process, discharge plasma sintering method prepares by one or more metal oxides that mix, but the highest Curie temperature also is no more than 250 ℃.We only utilize conventional solid-state method take barium carbonate, titanium dioxide, Quilonum Retard, Niobium Pentxoxide as raw material, the positive temperature coefficient thermo-sensitive material of preparation high-curie temperature.
Summary of the invention
The objective of the invention is provides barium titanate-based positive temperature coefficient resistance material of a kind of doped lithium columbate and preparation method thereof in order to improve the low problem of barium titanate-based positive temperature coefficient resistance material Curie temperature.
The chemical constitution general formula of the barium titanate-based positive temperature coefficient resistance material of the doped lithium columbate that the present invention relates to is: Ba 1-xLi xTi 1-xNb xO 3, wherein: 0＜x≤0.08; X is molar fraction.
Preparation method's concrete steps of the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate are:
(1) with purity is BaCO more than 99.9% 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder press Ba 1-xLi xTi 1-xNb xO 3Form weigh batching, wherein: 0＜x≤0.08; X is molar fraction.
(2) pellet that step (1) prepared mill 4 hours, 1000～1100 ℃ of pre-burnings 2 hours, ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1150～1250 ℃ of calcinings 3 hours, top electrode namely makes the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate.
The barium titanate-based positive temperature coefficient resistance material of the doped lithium columbate of the present invention's preparation has the following advantages: composition is unleaded, can not work the mischief to environment with to human body; Mixed behind the Lithium niobium trioxide, even trace doped, also can greatly improve the Curie temperature of component.
Embodiment
Embodiment 1:
Be 99.9% BaCO with purity 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder, press x=0.02, i.e. Ba 0.98Li 0.02Ti 0.98Nb 0.02O 3Weigh batching; The material that then will prepare is with planetary mills ball milling 4 hours, 1100 ℃ of pre-burnings 2 hours, and ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1250 ℃ of calcinings 3 hours, top electrode is prepared the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate; Prepared product is carried out performance test, its Curie temperature T c200 ℃ of ≈, resistivity is 10 Ω m, temperature factor is 8%/℃, maximum resistance rate/lowest resistivity (liftdrag) is greater than 9 * 10 3
Embodiment 2:
Be 99.9% BaCO with purity 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder, press x=0.04, i.e. Ba 0.96Li 0.04Ti 0.96Nb 0.04O 3Weigh batching; With the material for preparing with planetary mills ball milling 4 hours, 1060 ℃ of pre-burnings 2 hours, ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1200 ℃ of calcinings 3 hours, top electrode is prepared the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate; Prepared product is carried out performance test, its Curie temperature T c240 ℃ of ≈, resistivity is 8 Ω m, temperature factor is 12%/℃, maximum resistance rate/lowest resistivity (liftdrag) is greater than 10 4
Embodiment 3:
Be 99.9% BaCO with purity 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder, press x=0.06, i.e. Ba 0.94Li 0.06Ti 0.94Nb 0.06O 3Weigh batching; With the material for preparing with planetary mills ball milling 4 hours, 1040 ℃ of pre-burnings 2 hours, ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1180 ℃ of calcinings 3 hours, top electrode is prepared the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate; Prepared product is carried out performance test, its Curie temperature T c300 ℃ of ≈, resistivity is 6 Ω m, temperature factor is 16%/℃, maximum resistance rate/lowest resistivity (liftdrag) is greater than 6 * 10 3
Embodiment 4:
Be 99.9% BaCO with purity 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder, press x=0.08, i.e. Ba 0.92Li 0.08Ti 0.92Nb 0.08O 3Weigh batching; With the material for preparing with planetary mills ball milling 4 hours, 1000 ℃ of pre-burnings 2 hours, ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1150 ℃ of calcinings 3 hours, top electrode is prepared the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate; Prepared product is carried out performance test, its Curie temperature T c350 ℃ of ≈, resistivity is 12 Ω m, temperature factor is 12%/℃, maximum resistance rate/lowest resistivity (liftdrag) is greater than 1.4 * 10 4

Claims (2)

1. the barium titanate-based positive temperature coefficient resistance material of a doped lithium columbate is characterized in that the chemical constitution general formula of described resistive material is: Ba 1-xLi xTi 1-xNb xO 3, wherein: 0＜x≤0.08, x is molar fraction.
2. the preparation method of the barium titanate-based positive temperature coefficient resistance material of described doped lithium columbate according to claim 1 is characterized in that concrete steps are:
(1) with purity is BaCO more than 99.9% 3, TiO 2, Li 2CO 3And Nb 2O 5Starting powder press Ba 1-xLi xTi 1-xNb xO 3Form weigh batching, wherein: 0＜x≤0.08; X is molar fraction;
(2) pellet that step (1) prepared mill 4 hours, 1000～1100 ℃ of pre-burnings 2 hours, ball milling is 3 hours again, granulation, compressing tablet, binder removal, 1150～1250 ℃ of calcinings 3 hours, top electrode namely makes the barium titanate-based positive temperature coefficient resistance material of doped lithium columbate.
CN2012105496339A 2012-12-04 2012-12-04 Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof Pending CN102976747A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012105496339A CN102976747A (en) 2012-12-04 2012-12-04 Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012105496339A CN102976747A (en) 2012-12-04 2012-12-04 Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof

Publications (1)

Publication Number Publication Date
CN102976747A true CN102976747A (en) 2013-03-20

Family

ID=47851156

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012105496339A Pending CN102976747A (en) 2012-12-04 2012-12-04 Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof

Country Status (1)

Country Link
CN (1) CN102976747A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105036742A (en) * 2015-09-10 2015-11-11 桂林理工大学 High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
CN105236970A (en) * 2015-09-28 2016-01-13 桂林理工大学 High Curie point positive temperature coefficient resistor material Ba5LiTiNb3O15and preparation method thereof
CN105272237A (en) * 2015-09-28 2016-01-27 桂林理工大学 High-Curie point positive temperature coefficient resistor material Li3BaTiNbO7 and preparation method thereof
CN105272236A (en) * 2015-09-20 2016-01-27 桂林理工大学 High Curie point positive temperature coefficient resistance material Ba2Li3Bi2Nb5O19 and preparation method
CN108863080A (en) * 2018-08-10 2018-11-23 江西正强电瓷电器有限公司 The preparation method of the porcelain insulator glaze of positive temperature coefficient
CN111704461A (en) * 2020-05-22 2020-09-25 江苏波速传感器有限公司 Formula and preparation method of high Curie point low temperature co-fired piezoelectric ceramic
CN113582685A (en) * 2021-08-05 2021-11-02 湖南省美程陶瓷科技有限公司 Lead-free piezoelectric ceramic material for breathing machine and preparation method thereof
CN113651612A (en) * 2021-08-13 2021-11-16 湖州南木纳米科技有限公司 Barium titanate PTC thermal sensitive ceramic material and application thereof in lithium battery

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143255A (en) * 1995-02-14 1997-02-19 Tdk株式会社 Semiconductor ceramic synthetic article with positive resistance temperature coefficient and its producing method
US20010003361A1 (en) * 1999-12-09 2001-06-14 Murata Manufacturing Co., Ltd. Semiconducting ceramic material and electronic part employing the same
CN101188155A (en) * 2007-12-20 2008-05-28 天津大学 Heat sensitive resistor for Ni/BaTiO3 base compound positive temperature coefficient and its making method
CN101188156A (en) * 2007-12-20 2008-05-28 天津大学 Heat sensitive resistor for high Curie temperature BaTiO3 base positive temperature coefficient and its making method
CN101445365A (en) * 2008-12-26 2009-06-03 广东工业大学 Barium titanate-based positive temperature coefficient resistance material and preparation method thereof
CN101519306A (en) * 2009-02-24 2009-09-02 上海大学 Method for preparing high curie temperature leadless PTCR ceramic
CN101880161A (en) * 2010-05-28 2010-11-10 章慧 High-lift-to-drag-ratio ceramic thermistor and preparation method thereof

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1143255A (en) * 1995-02-14 1997-02-19 Tdk株式会社 Semiconductor ceramic synthetic article with positive resistance temperature coefficient and its producing method
US20010003361A1 (en) * 1999-12-09 2001-06-14 Murata Manufacturing Co., Ltd. Semiconducting ceramic material and electronic part employing the same
CN101188155A (en) * 2007-12-20 2008-05-28 天津大学 Heat sensitive resistor for Ni/BaTiO3 base compound positive temperature coefficient and its making method
CN101188156A (en) * 2007-12-20 2008-05-28 天津大学 Heat sensitive resistor for high Curie temperature BaTiO3 base positive temperature coefficient and its making method
CN101445365A (en) * 2008-12-26 2009-06-03 广东工业大学 Barium titanate-based positive temperature coefficient resistance material and preparation method thereof
CN101519306A (en) * 2009-02-24 2009-09-02 上海大学 Method for preparing high curie temperature leadless PTCR ceramic
CN101880161A (en) * 2010-05-28 2010-11-10 章慧 High-lift-to-drag-ratio ceramic thermistor and preparation method thereof

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
杜红炎等: "（1-x）BaTiO3-xKNbO3陶瓷的制备及性能研究", 《江苏陶瓷》 *
杜红炎等: "（1-x）BaTiO3-xLiNbO3陶瓷的制备及性能研究", 《佛山陶瓷》 *

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105036742A (en) * 2015-09-10 2015-11-11 桂林理工大学 High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
CN105272236A (en) * 2015-09-20 2016-01-27 桂林理工大学 High Curie point positive temperature coefficient resistance material Ba2Li3Bi2Nb5O19 and preparation method
CN105236970A (en) * 2015-09-28 2016-01-13 桂林理工大学 High Curie point positive temperature coefficient resistor material Ba5LiTiNb3O15and preparation method thereof
CN105272237A (en) * 2015-09-28 2016-01-27 桂林理工大学 High-Curie point positive temperature coefficient resistor material Li3BaTiNbO7 and preparation method thereof
CN108863080A (en) * 2018-08-10 2018-11-23 江西正强电瓷电器有限公司 The preparation method of the porcelain insulator glaze of positive temperature coefficient
CN108863080B (en) * 2018-08-10 2021-04-16 江西正强电瓷电器有限公司 Preparation method of porcelain insulator glaze with positive temperature coefficient
CN111704461A (en) * 2020-05-22 2020-09-25 江苏波速传感器有限公司 Formula and preparation method of high Curie point low temperature co-fired piezoelectric ceramic
CN113582685A (en) * 2021-08-05 2021-11-02 湖南省美程陶瓷科技有限公司 Lead-free piezoelectric ceramic material for breathing machine and preparation method thereof
CN113582685B (en) * 2021-08-05 2022-07-15 湖南省美程陶瓷科技有限公司 Lead-free piezoelectric ceramic material for breathing machine and preparation method thereof
CN113651612A (en) * 2021-08-13 2021-11-16 湖州南木纳米科技有限公司 Barium titanate PTC thermal sensitive ceramic material and application thereof in lithium battery

Similar Documents

Publication Publication Date Title
CN102976747A (en) Lithium niobate doped barium titanate based positive temperature coefficient resistance material and preparation method thereof
CN103058651A (en) Modified barium titanate base unleaded positive temperature coefficient resistance material and preparing method thereof
CN102674832B (en) Barium-titanate-base lead-free bismuth-containing relaxation ferroelectric ceramic material and preparation method thereof
CN103030390B (en) Zinc oxide piezoresistor material and preparation method
CN104591726A (en) High-potential gradient zinc oxide voltage piezo-resistor material and preparation method thereof
CN101013618A (en) Leadless PTC thermistor material with high Curie point
CN102390997B (en) High-dielectric-strength potassium sodium niobate based lead-free piezoelectric ceramic as well as preparation method and application thereof
CN105645948B (en) A kind of preparation method of high-voltage gradient, low Leakage Current varistor ceramics materials
CN105198411A (en) Large-strain low-drive electric field relaxation and ferroelectric composite lead-free piezoelectric ceramic and preparation method thereof
CN104030679A (en) BaTiO3-based lead-free PTC (positive temperature coefficient) thermistor ceramic material sintered in reducing atmosphere and preparation method thereof
CN101774803A (en) A (Ba, sr) TiO3-based ceramic medium and its prepn
CN105272205A (en) Low-temperature sintering zinc oxide varistor material and preparation method thereof
CN108975912B (en) Ternary potassium sodium niobate based leadless piezoelectric ceramic and preparation method thereof
CN102568821B (en) High-voltage ceramic capacitor dielectric with high dielectric constant
CN103086712A (en) Bi2WO6-modified barium titanate-based lead-free positive temperature coefficient resistance material and preparation method thereof
CN102887704A (en) Lead-free high-Curie temperature PTCR (positive temperature coefficient resistor) ceramic material and preparation method thereof
CN102584254B (en) Additive and application thereof in reducing unleaded PTC (positive temperature coefficient) thermal sensitive ceramic sintering temperature
CN104030678A (en) BaTiO3 based lead-free relaxation-type ceramic dielectric material and preparation method thereof
CN101891465A (en) Barium-strontium stannate titanate lead-free piezoelectric ceramics with high piezoelectric constant
CN105036742A (en) High-curie-point positive-temperature-coefficient resistance material Ba3Li3Bi2Nb5O20 and preparation method thereof
CN102531573A (en) Doped and modified temperature compensation high-frequency microwave capacitor dielectric material
CN105198420A (en) High curie-point positive temperature coefficient resistance material Ba3Ti2V4O17 and preparation method thereof
CN105198421A (en) High curie-point positive temperature coefficient resistance material Ba2LaV3O11 and preparation method thereof
CN105272239A (en) High-Curie point positive temperature coefficient resistor material Ba3Ti4V4O21 and preparation method thereof
CN101391809B (en) Process for preparing barium titanate and strontium titanate

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130320