CN1195308C - Nano silver-tin oxide electric contact and its prepn - Google Patents
Nano silver-tin oxide electric contact and its prepn Download PDFInfo
- Publication number
- CN1195308C CN1195308C CNB021466963A CN02146696A CN1195308C CN 1195308 C CN1195308 C CN 1195308C CN B021466963 A CNB021466963 A CN B021466963A CN 02146696 A CN02146696 A CN 02146696A CN 1195308 C CN1195308 C CN 1195308C
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- Prior art keywords
- oxide
- nano
- tin oxide
- silver
- powder
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- IVQODXYTQYNJFI-UHFFFAOYSA-N oxotin;silver Chemical compound [Ag].[Sn]=O IVQODXYTQYNJFI-UHFFFAOYSA-N 0.000 title abstract 3
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 40
- 229910001887 tin oxide Inorganic materials 0.000 claims abstract description 21
- 239000000843 powder Substances 0.000 claims abstract description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 18
- 229910052709 silver Inorganic materials 0.000 claims abstract description 11
- 239000004332 silver Substances 0.000 claims abstract description 11
- 239000011787 zinc oxide Substances 0.000 claims abstract description 10
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 4
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 17
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 229910000420 cerium oxide Inorganic materials 0.000 claims description 9
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 9
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 238000003980 solgel method Methods 0.000 claims description 4
- 239000002270 dispersing agent Substances 0.000 claims description 3
- 239000011812 mixed powder Substances 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- JVQAJHYYWVAKPP-UHFFFAOYSA-N [O-2].[Ti+4].[Sn+2]=O.[O-2].[O-2] Chemical compound [O-2].[Ti+4].[Sn+2]=O.[O-2].[O-2] JVQAJHYYWVAKPP-UHFFFAOYSA-N 0.000 claims 1
- 239000007864 aqueous solution Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 239000000243 solution Substances 0.000 claims 1
- 238000005245 sintering Methods 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000003466 welding Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 229910052761 rare earth metal Inorganic materials 0.000 abstract description 2
- 238000010891 electric arc Methods 0.000 abstract 1
- 230000002349 favourable effect Effects 0.000 abstract 1
- 239000011156 metal matrix composite Substances 0.000 abstract 1
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 150000004706 metal oxides Chemical class 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 5
- 230000003628 erosive effect Effects 0.000 description 5
- 229960001296 zinc oxide Drugs 0.000 description 5
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 3
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910003087 TiOx Inorganic materials 0.000 description 2
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- HLLICFJUWSZHRJ-UHFFFAOYSA-N tioxidazole Chemical compound CCCOC1=CC=C2N=C(NC(=O)OC)SC2=C1 HLLICFJUWSZHRJ-UHFFFAOYSA-N 0.000 description 2
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000011858 nanopowder Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
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- Contacts (AREA)
- Powder Metallurgy (AREA)
Abstract
The present invention discloses a nanometer silver-tin oxide electrical contact material and a preparation method thereof, which belongs to the technology of metal matrix composites. The electrical contact of the present invention is composed of 70 to 97% of silver, 3 to 22% of nanometer tin oxide and 0.1 to 8% of rare-earth elements. The nanometer silver-tin oxide electrical contact material is prepared by preparing nanometer tin oxide doped with zinc oxide or titanium oxide, mixing metal oxide powders, profiling the powders, sintering, extruding the mixture, drawing wires and manufacturing into rivets or strip and block contacts, wherein the pressure of the powder profiling is from 150 to 400MPa, and the sintering temperature is from 800 to 900 DEG C. The present invention has the advantages of high contact electric conductivity, low contact resistance, welding resistance, favorable performance of electric arc burning loss resistance, good thermal stability and simple preparation process; besides, the electrical contact of the present invention is widely used for electric appliances, meters and switches.
Description
Technical field
The present invention relates to electrical contact of a kind of silver-colored nano tin dioxide and preparation method thereof.Belong to the metal-base composites technical field.
Background technology
Electrical contact is the key element of appliance switch, instrument and meter etc., in contactor, relay and small-power circuit breaker.A large amount of both at home and abroad for a long time contacts that use Ag-CdO, it has good arc extinguishing, stable advantages such as contact resistance, but in recent years along with to the prolongation in electrical equipment useful life and the requirement of miniaturization, the AgCdO contact material has exposed its melt resistance can be poor, electrical arc erosion is serious, in use produce the cadmium poison inevitably, cause deficiencies such as environmental pollution.Sliver oxidized tin contactor materials is the very fast a kind of novel nontoxic electrical contact material of developed recently, it has Heat stability is good, anti-arc erosion and resistance fusion welding energy, the scope of application can reach 10-1000A, thereby guarantee the reliability of electric operation, improving useful life, is the ideal material that is used for replacing at contactor, relay and switch poisonous Agcdo at present.
Development siller tin oxide contact adopts two kinds of methods both at home and abroad at present: " internal oxidation " and " powder metallurgic method ".Internal oxidation is produced the siller tin oxide contact and is needed to add indium in alloy, so that Sn is oxidized to SnO
2The method production cost height, technology are complicated.Powder metallurgic method is produced siller tin oxide contact Germany and is led over the U.S., Japan,, they add a spot of WO in powder
3And MoO
3, properties of product are stable, to obtain practical application.The siller tin oxide contact is the focus of present domestic low voltage electrical apparatus industry research, however because its is difficult for drawing moulding, and contact resistance is bigger in the use, temperature rise, and become the difficult point of research.
Summary of the invention
The objective of the invention is to overcome the weak point that above-mentioned powder metallurgic method is produced the contact of siller tin oxide, a kind of new silver-colored nano tin dioxide electrical contact and preparation method thereof is provided.This electrical contact has the conductivity height, and even tissue is careful, interface bond strength is high, the characteristics of anti-melting welding, anti-electrical arc erosion, and its preparation technology is simple, cost is low.
The present invention is realized by following technical proposals.The electrical contact of the silver-colored nano tin dioxide of rivet or stick contact is characterized in that, electrical contact material is made up of the nano tin dioxide of silver, doping zinc-oxide or titanium oxide and cerium oxide or lanthana, and each composition weight content is:
Silver: 70～96%
The nano tin dioxide that mixes: 3～22%
Cerium oxide or lanthana: 0.1～8%
The weight ratio that contains zinc oxide or titanium oxide in the nano tin dioxide of above-mentioned doping is 0.5～10%.
The nano tin dioxide of above-mentioned doping is 5～10% of an electrical contact material total weight.
Adopt above-mentioned material to prepare the method for electrical contact, its process comprises that mainly sol-gel process prepares the nano oxidized tin powder of doping zinc-oxide or titanium oxide; Silver, dopen Nano tin oxide and cerium oxide or lanthanum oxide powder are mixed; Mixed powder isostatic compaction, sintering, extruding, wire drawing and system rivet and kicker is characterized in that: a. sol-gel process prepares nano tin dioxide, with SnCl
4And TiCl
4Or ZnCl
2And in both weight ratios: 5～9: 5～1 ratio.Adding concentration is in 20～30% ethanol waters, simultaneously to solution add that 5～10% triethanolamine disperses and and to drip concentration be the ammoniacal liquor of (1ML), in 40～60 ℃ of reactions, react to solution and be PH=7, product is after filtering 200～700 ℃ of roastings 2～3 hours, obtains the doping zinc-oxide that particle diameter is 6～20nm or the nano oxidized tin powder of titanium oxide; B. the metal dust mixing is by silver powder, nano tin dioxide and cerium oxide or lanthanum oxide powder weight ratio, and mixed in mixing tank 7～10 hours at 70～96: 3～22: 0.1～8.C. the powder of Hun Heing is under 20～30 ℃ temperature, with 250～500MPa extrusion forming, and 800～900 ℃ of sintering 4～10 hours.
Major advantage of the present invention is, the zinc oxide or the titanium oxide that mix enter the tin oxide lattice fully, and nano-powder is evenly distributed among the material, thereby has improved the conductivity of contact and reduced contact resistance, and then has improved the anti-melting welding of contact, the performance of anti-electrical arc erosion; Add thermal stability and anti-arc erosion and the non-oxidizability that rare earth element improves contact in the material, the plasticity of material improves is convenient to extrusion rolling processing, and processing technology is simple.
Specific implementation method
Embodiment one:
(1) with SnCl
4And TiCl
4, by weight: 8: 2 ratio, get SnCl
420 grams, TiCl
45 grams weigh, put into beaker, adding concentration is 30% ethanol water 20ml, adding 0.5 gram triethanolamine dispersant and drip concentration to solution simultaneously is (1mol) ammoniacal liquor 40ml, in 40～60 ℃ of reactions, react to solution and be pH=7, product is after filtering 200～700 ℃ of roastings 2～3 hours, and obtaining particle diameter is nano oxidized tin powder 8 grams of the adulterated TiOx of 20nm.
(2) with silver powder, nano tin dioxide and ceria oxide powder by weight 88: 10: 2, take by weighing silver powder 88 grams, nano tin dioxide 10 grams and cerium oxide 2 grams, in mixing tank, mixed 7～10 hours.The powder that mixes is under 20～30 ℃ temperature, with the 250MPa extrusion forming, and 800 ℃ of sintering 10 hours.
(3) material behind the sintering is pushed down at 700 ℃, extrusion ratio is 200; Obtain the wire rod of Φ 3.5～5.0mm, again with wire rod under 20 ℃, 2 meters/minute of drawing speeies are drawn to Φ 2.7～1.38mm silk material.
Silk material density: 9.9～10.7kg/cm
3, resistivity: 2.1～2.3 μ Ω .cm, hardness: HV 760～1100MPa (HV) tensile strength is: 260～350MPa, elongation are 18～30%.
Embodiment two:
1) with SnCl
4And TiCl
4, by weight: 9: 1 ratio weighs SnCl
427 gram and TiCl
43 grams, put into beaker, adding concentration is 30% ethanol water 30ml, simultaneously adding 0.7 gram triethanolamine dispersant and drip concentration to solution is (1mol) ammoniacal liquor 40mL, in 40～60 ℃ of reactions, reacts to solution and is pH=7, product is after filtering 200～700 ℃ of roastings 2～3 hours, and obtaining particle diameter is nano oxidized tin powder 10 grams of the adulterated TiOx of 20nm.
(4) with silver powder, nano tin dioxide and ceria oxide powder by weight 88: 10: 2, silver powder 44 grams, nano tin dioxide 5 grams and ceria oxide powder 1 gram mixed in mixing tank 7～10 hours.The powder that mixes is under 20～30 ℃ temperature, with the 250MPa extrusion forming, and 800 ℃ of sintering 10 hours.
(5) material behind the sintering is pushed down at 700 ℃, extrusion ratio is 200; Obtain the wire rod of Φ 3.5～5.0mm, again with wire rod under 20 ℃, 2 meters/minute of drawing speeies are drawn to Φ 2.7～1.38mm silk material.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021466963A CN1195308C (en) | 2002-11-05 | 2002-11-05 | Nano silver-tin oxide electric contact and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021466963A CN1195308C (en) | 2002-11-05 | 2002-11-05 | Nano silver-tin oxide electric contact and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417817A CN1417817A (en) | 2003-05-14 |
| CN1195308C true CN1195308C (en) | 2005-03-30 |
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ID=4751145
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021466963A Expired - Fee Related CN1195308C (en) | 2002-11-05 | 2002-11-05 | Nano silver-tin oxide electric contact and its prepn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195308C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911219B (en) * | 2008-01-17 | 2015-12-16 | 日亚化学工业株式会社 | Conductive material and manufacturing method thereof, electronic device, light-emitting device and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299307C (en) * | 2004-12-08 | 2007-02-07 | 昆明贵金属研究所 | Silver-tin oxide electrical contact material and preparation method thereof |
| CN100481289C (en) * | 2004-12-31 | 2009-04-22 | 西安工程科技学院 | Chemical coprecipitation preparation of nano-rave-earth blend AgSnO2 electric contacting alloy |
| CN100444294C (en) * | 2005-09-01 | 2008-12-17 | 中南大学 | Method for producing silver tin oxide contact material |
| CN101217074B (en) * | 2008-01-14 | 2011-02-23 | 中希合金有限公司 | A silver tin/copper oxide compound electrical contact and preparation method |
| CN101964260B (en) * | 2008-12-15 | 2012-08-29 | 中国船舶重工集团公司第七二五研究所 | A kind of Ag/SnO2 electrical contact material and preparation method thereof |
| CN101609751A (en) * | 2009-07-27 | 2009-12-23 | 上海市机械制造工艺研究所有限公司 | Nano-doping stannic oxide powder and preparation method thereof |
| CN102321838B (en) * | 2011-10-11 | 2013-02-27 | 浙江大学 | Preparation method of Ag/SnO2 composite material |
| CN102509654B (en) * | 2011-10-27 | 2015-03-11 | 福达合金材料股份有限公司 | Preparation method for silver stannic oxide wire |
| CN102683050B (en) * | 2012-05-04 | 2014-11-19 | 温州宏丰电工合金股份有限公司 | Preparation method of nano Ag-SnO2 electric contact composite |
| CN104715939A (en) * | 2013-12-13 | 2015-06-17 | 西门子公司 | Disconnecting switch |
| CN104741602B (en) * | 2013-12-31 | 2017-09-15 | 施耐德电器工业公司 | A kind of electrical contact material including metal and metal oxide and preparation method thereof |
| CN105274381A (en) * | 2015-11-14 | 2016-01-27 | 华文蔚 | Silver/cadmium oxide material and preparing method thereof |
| CN106683914B (en) * | 2017-02-25 | 2018-10-19 | 河北工业大学 | A kind of low-voltage electrical apparatus copper-based electrical contact material and preparation method thereof |
| CN112779436A (en) * | 2020-12-23 | 2021-05-11 | 佛山市诺普材料科技有限公司 | AgNi electrical contact material and preparation method thereof |
-
2002
- 2002-11-05 CN CNB021466963A patent/CN1195308C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101911219B (en) * | 2008-01-17 | 2015-12-16 | 日亚化学工业株式会社 | Conductive material and manufacturing method thereof, electronic device, light-emitting device and manufacturing method thereof |
| US9812624B2 (en) | 2008-01-17 | 2017-11-07 | Nichia Corporation | Method for producing conductive material, conductive material obtained by the method, electronic device containing the conductive material, light-emitting device, and method for producing light-emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1417817A (en) | 2003-05-14 |
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