CN85100034B - Tin dioxide conductive ceramics - Google Patents
Tin dioxide conductive ceramics Download PDFInfo
- Publication number
- CN85100034B CN85100034B CN85100034A CN85100034A CN85100034B CN 85100034 B CN85100034 B CN 85100034B CN 85100034 A CN85100034 A CN 85100034A CN 85100034 A CN85100034 A CN 85100034A CN 85100034 B CN85100034 B CN 85100034B
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- CN
- China
- Prior art keywords
- present
- flow meter
- ceramics
- platinum
- electrode
- 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.)
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- Compositions Of Oxide Ceramics (AREA)
- Conductive Materials (AREA)
Abstract
The present invention relates to ceramic electrode materials for an electromagnetic flow meter, which uses SnO2 as main components, and components, such as Sb2O3, CuO, ZnO, PbO, Fe2O3, etc., are added. The present invention belongs to ceramics which adopt a common ceramic technology and is burnt at the temperature of 1300 to 1360DEGC in an oxidizing atmosphere. The present invention is characterized in that the present invention can resist the erosion of strongly acid in various concentrations, and electrical conductivity at normal temperature is good. When the ceramics are used for replacing a platinum electrode in the existing chemical industry electromagnetic flow meter, a large amount of platinum can be saved. Cost is decreased to 99%, and the continuous service life of the flow meter is prolonged. In addition, the present invention can also be used for aspects, such as electrodes of a solar battery, common heating bodies, heating bodies of corrosion resisting objects, etc.
Description
The invention belongs to conductivity ceramics
Tin dioxide conductive ceramics is in prior art for example: United States Patent (USP) (U.S.A3287284; U.S.A3502597) and " glass fibre " magazine (No4-5 in 1975 had record in P1-8), had introduced several SnO in this prior art
2The preparation of electrode, the prescription that uses in this method is respectively: 98% SnO
2, 0.2% CuO, 0.8% ZnO, 1% Sb
2O
3; SnO
2Be 100 parts, CuO is 0.5 part of Sb
2O
3It is 1.0 parts; And SnO
2Be 96.06%, Bi
2O
3Be 1.91%, ZnO is 1.95%, Fe
2O
3Be 0.18%, CaO is 0.28%, and MgO is 0.20%, and the firing temperature height of these prescriptions needs to burn till about 1400-1500 ℃, to the equipment requirements height, and the cost height, or normal temperature electric conductivity is bad, uses to normal temperature and causes difficulty; Though or normal temperature electric conductivity is better, be at N
2Or high temperature burns till under the inert atmosphere; Or special process such as the method processing that adds tin halides in the prescription just can make the reasonable stannic oxide ceramic of normal temperature electric conductivity.Though can making, these preparations have the SnO of normal temperature electric conductivity preferably
2Pottery, but firing temperature height, complex process, cost height.The electrode of chemical electromagnetic flowmeter use is at present made with platinum, and a platinum electrode is worth more than about thousand yuan, and cost is too high, the SnO of prior art for preparing
2Pottery is the electrode as glass melter.
The objective of the invention is to make firing temperature and corrode the electromagnetic flowmeter SnO that cost is low than strong acid such as the nitric acid of the various concentration of the low ability of prior art, sulfuric acid, hydrochloric acid, hydrofluorite
2Ceramic electrode.
Tin dioxide conductive ceramics of the present invention is that chemical pure tin ash was carried out ball milling 10-15 hour, wherein material: ball: water=1: 2: 1.Take out oven dry behind the ball milling, cross 300 mesh sieves, press routine proportion ingredient:
SnO
2It is 100 parts
Sb
2O
3Be 0.1-10 part
CuO is 0-5 part
ZnO is 0.4-2 part
PbO is 0.007 part
Fe
2O
3It is 0.05 part
With above-mentioned batching mix grinding 1 hour, add 5-15
WtThe PVA aqueous solution 5-10 of %
Wtw%.The 30-40 mesh sieve is crossed in granulation then, drying, and dry-pressing formed, the size that forming pressure is looked the electrode used therein element is the 1-4 ton.With the blank air dry, blank is put into the ordinary silicon kryptol stone then, burn till under oxidizing atmosphere, firing temperature is 1300-1360 ℃, is incubated 1-2 hour.
Batching among the present invention adopts SnO
2Raw material is given birth to, grog is suitably arranged in pairs or groups, and the volumetric shrinkage of sample is reduced, and can make the higher goods of dimensional accuracy.
The chemical electromagnetic flowmeter that adopts stannic oxide ceramic of the present invention to replace existing platinum electrode to make can be saved a large amount of platinum, and can reduce cost reaches about 99% remarkable in economical benefits.The erosion of the various concentration strong acid of this stannic oxide ceramic electrode ability, thus can be used for industrial sector such as Chemical Manufacture in a large number, and the time of the continuous use of comparable existing flowmeter is long, and throughput rate is improved.Tin dioxide conductive ceramics of the present invention also can be used for electrode of solar battery, general calandria, aspects such as corrosion-resistant material heater.
Claims (8)
1, a kind of with SnO
2Be major component, add Sb
2O
3, CuO, ZnO, PbO, Fe
2O
3Deng the electromagnetic flowmeter of composition ceramic electrode material, it is characterized in that:
SnO
2It is 100 parts
Sb
2O
3Be 0.1-10 part
CuO is 0-5 part
ZnO is 0.4-2 part
PbO is 0.007 part
Fe
2O
3It is 0.05 part
2, electrode as claimed in claim 1 is characterized in that burning till under 1300-1360 ℃ under oxidizing atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100034A CN85100034B (en) | 1985-04-01 | 1985-04-01 | Tin dioxide conductive ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN85100034A CN85100034B (en) | 1985-04-01 | 1985-04-01 | Tin dioxide conductive ceramics |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN85100034A CN85100034A (en) | 1986-08-27 |
| CN85100034B true CN85100034B (en) | 1987-05-06 |
Family
ID=4790832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN85100034A Expired CN85100034B (en) | 1985-04-01 | 1985-04-01 | Tin dioxide conductive ceramics |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN85100034B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7685843B2 (en) * | 2004-07-23 | 2010-03-30 | Saint-Gobain Ceramics & Plastics, Inc. | Tin oxide material with improved electrical properties for glass melting |
| US8147724B2 (en) * | 2008-12-18 | 2012-04-03 | Saint-Gobain Ceramics & Plastics, Inc. | Tin oxide-based electrode composition |
| CN101935209A (en) * | 2010-06-02 | 2011-01-05 | 河北东旭投资集团有限公司 | Heating electrode for melting tank of glass kiln |
| CN102329063A (en) * | 2011-07-19 | 2012-01-25 | 彩虹集团公司 | Heating electrode for glass kiln melting tank |
| CN103482983A (en) * | 2012-06-15 | 2014-01-01 | 南京理工大学 | Tin dioxide modified ceramic electrode making method |
| CN105924150B (en) * | 2016-04-14 | 2018-08-21 | 江苏大学 | A kind of low sintering conducting ceramic material and preparation method thereof |
| CN105801107B (en) * | 2016-04-14 | 2019-04-02 | 江苏大学 | A kind of high-performance conductive ceramic material and preparation method thereof |
| CN114835486B (en) * | 2021-02-01 | 2023-08-18 | 江门思摩尔新材料科技有限公司 | Conductive ceramic material and preparation method thereof, and conductive ceramic body and preparation method thereof |
-
1985
- 1985-04-01 CN CN85100034A patent/CN85100034B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN85100034A (en) | 1986-08-27 |
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|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| PB01 | Publication | ||
| C06 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |