CN100542358C - High temperature co-firing heater element and manufacture method thereof - Google Patents
High temperature co-firing heater element and manufacture method thereof Download PDFInfo
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- CN100542358C CN100542358C CNB2004100152744A CN200410015274A CN100542358C CN 100542358 C CN100542358 C CN 100542358C CN B2004100152744 A CNB2004100152744 A CN B2004100152744A CN 200410015274 A CN200410015274 A CN 200410015274A CN 100542358 C CN100542358 C CN 100542358C
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Abstract
The present invention relates to a kind of high temperature co-firing heater element and manufacture method thereof, a kind of have abundant stability and high efficiency high temperature co-firing heater element are provided, it is characterized in that this component structure is made up of two-layer or more potsherds, be printed with the metallic resistance slurry between potsherd, pass through pin, form the loop with circuit, produce heat.This manufacture method can be utilized various ceramic green molding modes; as curtain coating, dry-pressing, roll film etc.; make ceramic green, as the aluminium oxide ceramics green compact, the resistant to elevated temperatures metallic resistance slurry of printing on ceramic green; as tungsten manganese, molybdenum manganese, nickel, silver-colored palladium etc.; be hot pressed into one, sintering under hydrogen shield atmosphere, the percent by volume of hydrogen is 30%-100%; the percent by volume of nitrogen is 70%-0%, forms ceramic heating element.The ceramic heating element potsherd interlayer that this method is made does not need to use binding agent, has high temperature resistant, corrosion-resistant, waterproof, dielectric strength height, thermal conductivity advantages of higher.
Description
Technical field
The present invention relates to a kind of high temperature co-firing heater element and manufacture method thereof, belong to materials science field.
Background technology
The at present domestic ceramic heating element manufacturing process that generally adopts is: adopt the thick-film technique circuit that will generate heat to be printed in an aluminium oxide ceramic substrate surface, after the certain technology of process is burnt till, the aluminium oxide ceramic substrate that another piece is not printed any circuit covers on it, the middle low melting material that adopts bonds under a certain temperature, draw lead in its Pin locations then, form product.The heater element complex process that this method is made, binding agent is different with the ceramic matrix thermal coefficient of expansion, the easy oxidation of heater, the life-span is short.
Content of the present invention
The purpose of this invention is to provide a kind of high temperature co-firing heater element and manufacture method thereof.
Above-mentioned purpose of the present invention adopts following technical scheme to be achieved:
A kind of high temperature co-firing heater element is characterized in that this heater element is made up of two-layer or multi-layer ceramic chip, is printed with the metallic resistance slurry between potsherd, by pin, forms the loop with circuit, and the energising back produces heat.
A kind of manufacture method of high temperature co-firing heater element, this manufacture method are selected to utilize various ceramic green molding modes, as curtain coating, dry-pressing, roll film etc.; make ceramic green; as the aluminium oxide ceramics green compact, the resistant to elevated temperatures metallic resistance slurry of printing on ceramic green is as tungsten manganese, molybdenum manganese, nickel, silver-colored palladium; silver etc.; be hot pressed into one, sintering under hydrogen shield atmosphere, the percent by volume of hydrogen is 30%-100%; the percent by volume of nitrogen is 70%-0%, forms the ceramic heating element of one.
Different with traditional manufacture method, the present invention adopts common burning technology, and is once sintered ceramic body and resistance slurry, forms the ceramic heating element of one.
The forming method of high temperature co-firing heater element of the present invention may further comprise the steps:
(1) can utilize various forming methods, as curtain coating, dry-pressing, roll film etc., make ceramic green.
(2) with resistant to elevated temperatures metallic resistance slurry such as tungsten manganese, molybdenum manganese, nickel, silver-colored palladium, silver etc. are by certain heating circuit design requirement, adopt the mode of silk screen printing, the circuit that will generate heat is printed on the ceramic green surface, then another piece is not printed neat the covering in the above of ceramic green of any resistance slurry, if require more multi-layeredly, can repeat above step, under certain pressure and temperature, laminate and be integral.
(3) high temperature sintering makes it to become the heater element of a ceramic integral under certain reduction protection atmosphere.
High temperature co-firing heater element provided by the invention has abundant stability and high efficiency, and its ceramic heating element potsherd interlayer does not need to use binding agent, has high temperature resistant, corrosion-resistant, waterproof, dielectric strength height, thermal conductivity advantages of higher.
Described metallic resistance slurry is resistant to elevated temperatures metallic resistance slurry, is selected from tungsten manganese, tungsten, nickel, silver-colored palladium, any one in the silver.
Because the method that adopts ceramic green and resistance slurry to burn altogether, thus high temperature resistant to employed metallic resistance slurry requirement, simultaneously should be in sintering process being complementary with the shrinkage of ceramic substrate, reasonable slurry has tungsten manganese, molybdenum manganese, nickel, silver-colored palladium, silver etc.Should the accurate Calculation shrinkage for the moulding of ceramic green, by compression molding.The printed resistor slurry should solve printing quality and thickness emphatically on ceramic green.For fear of used metallic resistance slurry oxidation in high-temperature sintering process, this process should be carried out under reduction protection atmosphere.
Adopt the present invention to compare, following advantage arranged with conventional art:
1, belong to planar heating, the two-sided heat conduction of ceramic body, surface temperature is even, and is energy-efficient.
2, thermal response time is short, and thermal inertia is little, saves electric power.
3, high temperature resistant, corrosion-resistant, the dielectric strength height, power density is big.
4, because whole ceramic heating element has been sintered into one, heater and external insulation are difficult for oxidation, the long service life of heater.
Embodiment
Below in conjunction with embodiment in detail the present invention is described in detail:
The manufacturing of 96% alumina ceramic heating element
1, adopt The tape casting to prepare ceramic green.Alumina powder, sintering agent, solvent, dispersant, plasticizer, binding agent etc. are added the ball grinder ball milling, and the gained slurry carries out vacuum defoamation, starts casting machine, and the base film of curtain coating is dry solidification at a certain temperature.Obtain good uniformity, surfacing is smooth, the aluminium oxide ceramics green compact that intensity is high.
2, with the aluminium oxide green compact that obtained according to certain figure compression molding.With resistant to elevated temperatures tungsten manganese resistance slurry according to heating circuit design requirement, adopt the mode of silk screen printing, the circuit that will generate heat is printed on aluminium oxide ceramics green compact surface, the ceramic green that then another piece is not printed any resistance slurry neatly covers in the above, laminates to be integral under certain pressure and temperature.
3, under the atmosphere of protectiveness, as feeding hydrogen, sintering under hydrogen shield atmosphere; the percent by volume of hydrogen is 30%-100%; the percent by volume of nitrogen is 70%-0%, and according to suitable binder removal sintering curve, high temperature sintering makes it to become the heater element of a ceramic integral.
4, draw lead in its Pin locations, the electric performance test through certain becomes finished product.
Described metallic resistance slurry is resistant to elevated temperatures metallic resistance slurry, is selected from tungsten manganese, molybdenum manganese, nickel, silver-colored palladium, the silver any one.
Claims (4)
1, high temperature co-firing heater element, this component structure is made up of two-layer or multi-layer ceramic chip, be printed with the metallic resistance slurry between potsherd, pass through pin, form the loop with the heating circuit, the energising back produces heat, it is characterized in that, described high temperature co-firing heater element is that the percent by volume of hydrogen is 30% under the reducing atmosphere that feeds hydrogen, and the percent by volume of nitrogen is 70%, or, the percent by volume of hydrogen is 100%, and according to the binder removal sintering curve of setting, high temperature sintering makes it to become a ceramic integral.
2, high temperature co-firing heater element according to claim 1 is characterized in that: described metallic resistance slurry require to adopt the mode of the silk screen printing circuit that will generate heat to be printed on the ceramic green surface according to the heating circuit design.
3, high temperature co-firing heater element according to claim 1 and 2 is characterized in that: described metallic resistance slurry is resistant to elevated temperatures metallic resistance slurry, is selected from tungsten manganese, molybdenum manganese, nickel, the silver-colored palladium any one.
4, the manufacture method of high temperature co-firing heater element is characterized in that, this method may further comprise the steps:
(1) utilizes curtain coating, dry-pressing, rolling formation method, make ceramic green;
(2) with resistant to elevated temperatures tungsten manganese, molybdenum manganese, nickel, silver-colored palladium metal resistance slurry by certain heating circuit design requirement, adopt the mode of silk screen printing, the circuit that will generate heat is printed on the ceramic green surface, then another piece is not printed neat the covering in the above of ceramic green of any resistance slurry, if require more multi-layered, then repeat above step, under certain pressure and temperature, laminate and be integral;
(3) sintering under hydrogen shield atmosphere: the percent by volume by hydrogen is 30%; the percent by volume of nitrogen is 70%, or the percent by volume of hydrogen is 100%; according to the binder removal sintering curve of setting, high temperature sintering makes it to become the heater element of a ceramic integral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100152744A CN100542358C (en) | 2004-01-20 | 2004-01-20 | High temperature co-firing heater element and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2004100152744A CN100542358C (en) | 2004-01-20 | 2004-01-20 | High temperature co-firing heater element and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN1649449A CN1649449A (en) | 2005-08-03 |
| CN100542358C true CN100542358C (en) | 2009-09-16 |
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| CN101791818A (en) * | 2010-03-04 | 2010-08-04 | 中国电子科技集团公司第五十五研究所 | Method for preparing aluminium oxide ceramics green ceramic chip by tape casting |
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