CN102485700A - Method for spraying platinum layer on alumina corundum ceramic product - Google Patents
Method for spraying platinum layer on alumina corundum ceramic product Download PDFInfo
- Publication number
- CN102485700A CN102485700A CN2010105739577A CN201010573957A CN102485700A CN 102485700 A CN102485700 A CN 102485700A CN 2010105739577 A CN2010105739577 A CN 2010105739577A CN 201010573957 A CN201010573957 A CN 201010573957A CN 102485700 A CN102485700 A CN 102485700A
- Authority
- CN
- China
- Prior art keywords
- corundum ceramic
- aluminum oxide
- platinum
- oxide corundum
- spraying
- 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
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention relates to a method for spraying a platinum layer on an alumina corundum ceramic product, and relates to a method for spraying the platinum layer on the alumina corundum ceramic product. The method of the present invention comprises the steps of dissolving platinum liquid, selecting materials, cleaning, spraying the layer, coating and solidifying, detecting and examining the finished product. According to the invention, performance characteristics of current platinum and alumina corundum ceramic materials are combined, the parts can be used under the working condition of strong high temperature and strong corrosivity, such as used thermocouple protection tubes of crucible and glass melting furnace; the consumption of non renewable non ferrous metal resource can be effectively substituted, the alumina corundum ceramic products possess high temperature resistance, good acid and alkali resistance and good corrosion resistance, compared with alumina corundum ceramic products which uncoated a platinum coating, the high oxidizability resistance and the service life can be increased by more than 10 times; the process is simple, the manufacture cost is low, the product can substitute the platinum material, the integration usage performance of the alumina corundum ceramic products is as good as platinum products.
Description
Technical field
The present invention relates to a kind of process method that on on-metallic article, sprays the platinum layer, particularly a kind of method that on aluminum oxide corundum ceramic series of products, sprays the platinum layer.
Background technology
At present; Generally adopt platinum crucible to detect the main melt instrument in the checkout procedure both at home and abroad as the laboratory; Because it has characteristics such as the incomparable high-temperature resistant of other materials, highly corrosion resistant performance, high antioxidant, chemicalstability be good; Particularly outstanding characteristics can have anti-etch performance in high deep-etching flux such as glass melter, but it costs an arm and a leg; And platinum is the poor non-renewable nonferrous metal resources of our earth reserves.Seek a kind of substitute products, become in the industry the difficult problem of research and development always already.For a long time, we constantly explore and the process of research in, find aluminum oxide corundum ceramic series of products, have high antioxidant, and high temperature resistant, advantages such as anti-general acid and alkali corrosion, but exist work-ing life short, seriously corroded, problem such as consumption is big; What is worth mentioning is in the use of the key position of glass melter; Owing to reasons such as contact glass powder and strong acid and strong base additives; The higher K of content in its glass metal, Na, flux such as B are softening serious to the used aluminum oxide corundum ceramic protective tube fusion of thermopair; Cause work-ing life short, on average have only about 3 months the work-ing life of general aluminum oxide corundum ceramic goods.Especially be applied in key position such as domestic and international glass melter feed opening and substitute and continue to use expensive platinum protecting tube for many years always, can't find always stable performance, durable in use, the prices of raw and semifnished materials are cheap and originate plentiful alternative goods.
Summary of the invention
The present invention is exactly to the problems referred to above; Provide that a kind of starting material source is easy and cheap, operation is simple and easy; And the method that high temperature resistant, the acid-alkali-corrosive-resisting performance is good, high antioxidant, work-ing life improve a kind of more than 10 times spraying platinum layer on aluminum oxide corundum ceramic series of products than the aluminum oxide corundum ceramic series of products that is not coated with the platinum coating.
In order to realize above-mentioned purpose of the present invention, the present invention adopts following technical scheme: technological process of the present invention is by dissolving platinum liquid operation, and------the sprayed coating operation---the coating curing operation---detects operation---, and form by finished product examination operation for selection, matting.
Described dissolving platinum liquid operation: adopting platinum (platinum) purity is that Pt999 is a base-material; Be dissolved among the chloroazotic acid HNO3+3HCl=2H2O+Cl2+NOCl; Concentration is controlled at the platinum liquid of 10～13ml/gPt, and concrete chemical equation is: 3Pt+4HNO3+18HCl=3H2 [the PtCl6]+described selection of 4NO+8H2O, matting: select Al for use
2O
3Content be 95-99%, through 1780-1800 ℃ fire, water-intake rate is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in the concentration 30-35% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 4 hours the drying baker of 200 ℃ of insulations to dry again.
Described sprayed coating operation: adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.01-0.1mm.
The coating curing operation: select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 150-250 ℃, after the coating curing processing that continues then to be incubated 2-6 hour, the air cooling cooling.
Described detection operation: adopt the method for volt ohm-milliammeter measured resistance value, detecting should be less than 1 ohm of resistance through surperficial each resistance value of solidification treatment rear oxidation aluminium corundum ceramic article coatings.
Described finished product is checked and accepted operation: adopt the mode of manual observation coatingsurface color to check and accept.
Beneficial effect of the present invention: earth platinum resource reserve is also more rare than gold at present.According to incompletely statistics, world's platinum family element Mineral resources total reserves is about 3.1 ten thousand tons.Wherein, the platinum total reserves is about 1.4 ten thousand tons.150 tons of platinums can only be exploited out every year in the whole world, and wherein 60 tons are used for ornaments.And the ultimate production of annual gold has reached 3300 tons, estimates at present, if put former all platinums of exploiting out together, its volume only is equivalent to 5 meters square cubess, and platinum reserves are extremely rare.
At present, Japan is maximum platinum country of consumption, and its consumption accounts for 41.5% of world's aggregate demand, secondly is that the North America accounts for 23%, and the demand in Europe accounts for 17%, is in M.L., and remaining the Western countries accounts for 14.5%.The consumption of putting on market Chinese every year at last, accounts for 4%.Along with the development of world technology progressive, also can be increasing to this expense, be about to exhausted.
Both cost is relatively: according to not exclusively estimation, the present invention make a specification be Φ 25 * Φ 20 * 400 with platinum coating oxidation aluminium corundum ceramic goods, its cost cost is: 0.025m * 3.14 * 0.4m * 0.00001m * 20t/m
3* 1000kg/m
3* 1000g/kg * 435 yuan/g=2732 unit.
Tradition is platinum goods same size product: Φ a 25 * Φ 20 * 400, and the cost cost is 0.025m * 3.14 * 0.4m * 0.0025m * 20t/m
3* 1000kg/m
3Both compare 549500/2732=201 doubly * 1000g/kg * 350 yuan/g=549500 unit.Be not difficult to find out that from above-mentioned comparing result though traditional platinum goods have good functions of use, involve great expense, ten thousand cost has restricted the use of this goods surplus in the of 50.And adopt on the aluminum oxide corundum ceramic goods its cost of spraying platinum laminate surplus 2700 yuan.Its economic benefit and social benefit are self-evident.
Embodiment
Embodiment 1, the present invention adopt following technical scheme: technological process of the present invention is by dissolving platinum liquid operation, and------the sprayed coating operation---the coating curing operation---detects operation---, and form by finished product examination operation for selection, matting.
Described dissolving platinum liquid operation: adopting platinum (platinum) purity is that Pt999 is a base-material; Be dissolved among the chloroazotic acid HNO3+3HCl=2H2O+Cl2+NOCl; Concentration is controlled at the platinum liquid of 10～13ml/gPt, and concrete chemical equation is: 3Pt+4HNO3+18HCl=3H2 [the PtCl6]+described selection of 4NO+8H2O, matting: select Al for use
2O
3Content be 95-99%, through 1780-1800 ℃ fire, specific absorption is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in the concentration 30-35% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 3-5 hour the drying baker of 150-200 ℃ of insulation to dry again.
Described sprayed coating operation: adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.01-0.1mm.
The coating curing operation: select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 150-250 ℃, after the coating curing processing that continues then to be incubated 2-6 hour, the air cooling cooling.
Described detection operation: adopt the method for volt ohm-milliammeter measured resistance value, detecting should be less than 1 ohm of resistance through surperficial each resistance value of solidification treatment rear oxidation aluminium corundum ceramic article coatings.
Described finished product is checked and accepted operation: adopt the mode of manual observation coatingsurface color to check and accept.
Aluminum oxide corundum ceramic goods can be according to applying working condition, processes crucible series, pipe series, serial, the tabular series of square tube, enclosed cavity series, an end and seals difform aluminum oxide corundum ceramic spraying platinum goods such as the open series of an end.
Described aluminum oxide corundum ceramic goods can be according to applying working condition, processes crucible series, pipe series, serial, the tabular series of square tube, enclosed cavity series, an end and seals difform aluminum oxide corundum ceramic spraying platinum goods such as the open series of an end.
Embodiment 2, select Al for use
2O
3Content is 95%, through 1780 ℃ fire, specific absorption is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in concentration 30% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 3 hours the drying baker of 150 ℃ of insulations to dry again; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.01mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 150 ℃, after the coating curing processing that continues then to be incubated 2 hours, the air cooling cooling.
Embodiment 3, select Al for use
20
3Content is 97%, through 1790 ℃ fire, specific absorption is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in concentration 33% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 4 hours the drying baker of 170 ℃ of insulations to dry again; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.05mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 200 ℃, after the coating curing processing that continues then to be incubated 4 hours, the air cooling cooling.
Embodiment 4, select Al for use
2O
3Content is 99%, fires, absorbs (water) rate less than 0.05% aluminum oxide corundum ceramic series specification product through 1800 ℃; Put it in concentration 35% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified; Put it into again in 5 hours the drying baker of 200 ℃ of insulations and dry; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.1mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 250 ℃, after the coating curing processing that continues then to be incubated 6 hours, the air cooling cooling.
The present invention is intended to merge the performance characteristics separately of existing platinum and two kinds of materials of aluminum oxide corundum ceramic, gets its chief; Especially the parts that use down at strong high temperature, working condition that corrodibility is strong are like the protecting tube of crucible, glass melter use etc.; Effectively substitute the consumption of non-renewable nonferrous metal resource, provide that a kind of technology is simple, low cost of manufacture, substituted the platinum material, and the novel product of its comprehensive use properties aluminum oxide corundum ceramic goods spraying platinum layer that can compare favourably with the platinum goods.
Claims (5)
1. the method for a spraying platinum layer on aluminum oxide corundum ceramic goods is characterized in that technological process of the present invention is by dissolving platinum liquid operation, and---------the coating curing operation---detects operation---, and finished product checks and accepts operation to the sprayed coating operation forms for selection, matting;
Described dissolving platinum liquid operation: adopting platinum (platinum) purity is that Pt999 is a base-material; Be dissolved among the chloroazotic acid HNO3+3HCl=2H2O+Cl2+NOCl; Concentration is controlled at the platinum liquid of 10～13ml/gPt, and concrete chemical equation is: 3Pt+4HNO3+18HCl=3H2 [PtCl6]+4NO+8H2O
Described selection, matting: select Al for use
2O
3Content be 95-99%, through 1780-1800 ℃ fire, water-intake rate is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in the concentration 30-35% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 4 hours the drying baker of 200 ℃ of insulations to dry again;
Described sprayed coating operation: adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.01-0.1mm;
The coating curing operation: select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 150-250 ℃, after the coating curing processing that continues then to be incubated 2-6 hour, the air cooling cooling;
Described detection operation: adopt the method for volt ohm-milliammeter measured resistance value, detecting should be less than 1 ohm of resistance through surperficial each resistance value of solidification treatment rear oxidation aluminium corundum ceramic article coatings;
Described finished product is checked and accepted operation: adopt the mode of manual observation coatingsurface color to check and accept.
2. according to claim 1 on aluminum oxide corundum ceramic goods the method for spraying platinum layer, it is characterized in that described aluminum oxide corundum ceramic goods process crucible series, pipe series, serial, the tabular series of square tube, enclosed cavity series, an end and seal different shapeies such as end opening series.
3. the method that on aluminum oxide corundum ceramic goods, sprays the platinum layer according to claim 1 is characterized in that selecting for use Al
2O
3Content is 95%, through 1780 ℃ fire, specific absorption is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in concentration 30% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 3 hours the drying baker of 150 ℃ of insulations to dry again; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.01mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 150 ℃, after the coating curing processing that continues then to be incubated 2 hours, the air cooling cooling.
4. the method that on aluminum oxide corundum ceramic goods, sprays the platinum layer according to claim 1 is characterized in that selecting for use Al
2O
3Content is 97%, through 1790 ℃ fire, specific absorption is less than 0.05% aluminum oxide corundum ceramic series specification product; Put it in concentration 33% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified, puts it in 4 hours the drying baker of 170 ℃ of insulations to dry again; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.05mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 200 ℃, after the coating curing processing that continues then to be incubated 4 hours, the air cooling cooling.
5. the method that on aluminum oxide corundum ceramic goods, sprays the platinum layer according to claim 1 is characterized in that selecting for use Al
2O
3Content is 99%, fires, absorbs (water) rate less than 0.05% aluminum oxide corundum ceramic series specification product through 1800 ℃; Put it in concentration 35% hydrochloric acid soln and clean, using zero(ppm) water to be washed till the neutral PH detection paper then is 7, that is: qualified; Put it into again in 5 hours the drying baker of 200 ℃ of insulations and dry; Adopt special-purpose Spray painting tool, the platinum liquid of preparation is sprayed on the surface of aluminum oxide corundum ceramic goods equably, coat-thickness is controlled at 0.1mm; Select the thermostatic oven of good heat insulating for use, the aluminum oxide corundum ceramic goods after the spraying are slowly heated, be warming up to 250 ℃, after the coating curing processing that continues then to be incubated 6 hours, the air cooling cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105739577A CN102485700A (en) | 2010-12-03 | 2010-12-03 | Method for spraying platinum layer on alumina corundum ceramic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105739577A CN102485700A (en) | 2010-12-03 | 2010-12-03 | Method for spraying platinum layer on alumina corundum ceramic product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102485700A true CN102485700A (en) | 2012-06-06 |
Family
ID=46151276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105739577A Pending CN102485700A (en) | 2010-12-03 | 2010-12-03 | Method for spraying platinum layer on alumina corundum ceramic product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102485700A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938266A (en) * | 2013-01-18 | 2014-07-23 | 广东先导稀材股份有限公司 | Composite crucible, preparation method thereof and method for bismuth germanate crystal growth using the crucible |
| CN105951093A (en) * | 2016-04-26 | 2016-09-21 | 李波 | Precious metal plating method |
| CN109917573A (en) * | 2019-05-07 | 2019-06-21 | 固安浩瀚光电科技有限公司 | SPT restorative procedure in liquid crystal display panel production equipment |
| CN112809895A (en) * | 2021-02-20 | 2021-05-18 | 深圳市信德缘珠宝首饰有限公司 | Noble metal and ceramic combining process |
| CN114988853A (en) * | 2022-06-28 | 2022-09-02 | 江西博鑫环保科技股份有限公司 | Novel dense heat storage honeycomb ceramic filler resistant to hydrofluoric acid and alkali |
-
2010
- 2010-12-03 CN CN2010105739577A patent/CN102485700A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103938266A (en) * | 2013-01-18 | 2014-07-23 | 广东先导稀材股份有限公司 | Composite crucible, preparation method thereof and method for bismuth germanate crystal growth using the crucible |
| CN105951093A (en) * | 2016-04-26 | 2016-09-21 | 李波 | Precious metal plating method |
| CN109917573A (en) * | 2019-05-07 | 2019-06-21 | 固安浩瀚光电科技有限公司 | SPT restorative procedure in liquid crystal display panel production equipment |
| CN109917573B (en) * | 2019-05-07 | 2022-02-08 | 固安浩瀚光电科技有限公司 | SPT repairing method in liquid crystal panel production equipment |
| CN112809895A (en) * | 2021-02-20 | 2021-05-18 | 深圳市信德缘珠宝首饰有限公司 | Noble metal and ceramic combining process |
| CN114988853A (en) * | 2022-06-28 | 2022-09-02 | 江西博鑫环保科技股份有限公司 | Novel dense heat storage honeycomb ceramic filler resistant to hydrofluoric acid and alkali |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102485700A (en) | Method for spraying platinum layer on alumina corundum ceramic product | |
| CN104909567A (en) | Vanadium-titanium enamel glaze material, and preparation method thereof | |
| CN106752431A (en) | A kind of scumbling type aqueous insulation insulating moulding coating and preparation method thereof | |
| CN103011599A (en) | Enamel glaze material | |
| CN104176931B (en) | Solar energy high temperature thermal-collecting tube special neutral borosilicate glass tube and preparation method thereof | |
| CN105084940A (en) | Microcrystalline transparent leadless glaze-polycrystalline micropowder-ceramic composite glass tile | |
| CN105951093A (en) | Precious metal plating method | |
| CN106006652A (en) | Silicon sodium titanate, enamel glaze, enamel slurry and micro-crystalline enamel and preparation method thereof | |
| CN103484857A (en) | Method for preparation of nano-modified amorphous ceramic coating on metal matrix ceramic coating | |
| CN104817270A (en) | Enamel black glaze and preparation method thereof | |
| CN102120693A (en) | Lead-free sealing glass and preparation method thereof | |
| CN105753325B (en) | A kind of trailing of high alkali resistance ceramic glazing dyestuff | |
| CN108069608B (en) | Alkali-resistant porcelain glaze | |
| CN105753324B (en) | It is a kind of to grind the method for adding Ludox to prepare high alkali resistance ceramics overglaze color flux | |
| CN103663967B (en) | A kind of preparation method of Jade-like microcrystalline glass | |
| CN110255909B (en) | Enamel coating for pot body and preparation method thereof | |
| CN105753513B (en) | A kind of trailing of highly corrosion resistant ceramic glazing dyestuff | |
| CN105502945A (en) | Glaze used for surface of metal product and calcining method thereof | |
| CN104817271B (en) | A kind of preparation method of enamel electrostatic powdered frit and its enamel electrostatic powdered frit | |
| CN104261880B (en) | A kind of sand crystal glaze and preparation technology thereof utilizing iron mica | |
| CN103693849A (en) | Preparation method of glass-lined coating | |
| CN101003419B (en) | Gray coated glass and preparation method | |
| CN111908792B (en) | Glaze mixture of metal glaze, metal glaze product and preparation process of metal glaze product | |
| CN102832087B (en) | Steel core wire replaces the tungsten filament manufacture craft of molybdenum filament | |
| CN106810073B (en) | Enamel powdered frit and enamel internal container of water-heater |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120606 |