BR9601527A - Ceramic heater - Google Patents
Ceramic heaterInfo
- Publication number
- BR9601527A BR9601527A BR9601527A BR9601527A BR9601527A BR 9601527 A BR9601527 A BR 9601527A BR 9601527 A BR9601527 A BR 9601527A BR 9601527 A BR9601527 A BR 9601527A BR 9601527 A BR9601527 A BR 9601527A
- Authority
- BR
- Brazil
- Prior art keywords
- substrate
- heater
- ceramic
- ceramic heater
- alumina
- Prior art date
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Resistance Heating (AREA)
Abstract
Patente de invenção "AQUECEDOR CER‰MICO". A presente invenção refere-se ao aquecedor cerâmico de material sinterizado de substrato de alumina, usado nos sensores de oxigênio para automóveis e sistemas incandescentes para aquecimento de semicondutores, fontes térmicos à evaporação de óleo como aquecedor de ventilação a óleo, etc. No estado da técnica há problema de aderência entre o modelo aquecedor e o substrato principalmente à alta temperatura devido à migração de íons positivos, deteriorando-se no decorrer do uso e surgindo fissuras no substrato cerâmico, as quais comprometem à sua durabilidade. A presente invenção visa solucionar o problema citado com a determinação da composição e do componente principal alumina, auxiliares de sinterização, SiO~ 2~, MgO, CaO, elementos de terras raras, dos grupos IVB, VB e VIB da tabela periódica, do substrato em fita cerâmica verde, "green sheet", que cobre por impressão com pasta de tungstênio e em seguida, sobrepostos, sinterizandos em conjunto à 1550‹C em meio de hidrogênio, obtendo-se aquecedor cerâmico de 2 folhas de substrato e resistor térmico, formando-se um monobloco.Patent of invention "CERAMIC HEATER". The present invention relates to the ceramic heater of sintered material of alumina substrate, used in oxygen sensors for automobiles and incandescent systems for heating semiconductors, thermal sources for oil evaporation as an oil ventilation heater, etc. In the state of the art there is a problem of adhesion between the heater model and the substrate mainly at high temperature due to the migration of positive ions, deteriorating during use and cracks appearing in the ceramic substrate, which compromise its durability. The present invention aims to solve the problem mentioned with the determination of the composition and the main component alumina, sintering aids, SiO ~ 2 ~, MgO, CaO, rare earth elements, of the groups IVB, VB and VIB of the periodic table, of the substrate in green ceramic tape, "green sheet", which covers by printing with tungsten paste and then overlapping, sintering together at 1550 ‹C in hydrogen medium, obtaining a ceramic heater with 2 sheets of substrate and thermal resistor, forming a monoblock.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07210072A JP3125976B2 (en) | 1994-08-18 | 1995-07-25 | Ceramic heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR9601527A true BR9601527A (en) | 1999-10-13 |
Family
ID=16583362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR9601527A BR9601527A (en) | 1995-07-25 | 1996-04-11 | Ceramic heater |
Country Status (1)
| Country | Link |
|---|---|
| BR (1) | BR9601527A (en) |
-
1996
- 1996-04-11 BR BR9601527A patent/BR9601527A/en not_active IP Right Cessation
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Decision: intention to grant | ||
| FG9A | Patent or certificate of addition granted | ||
| B24H | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi) | ||
| B24F | Patent annual fee: publication cancelled |
Free format text: ANULADA A PUBLICACAO CODIGO 24.8 NA RPI NO 2257 DE 08/04/2014 POR TER SIDO INDEVIDA. |
|
| B21F | Lapse acc. art. 78, item iv - on non-payment of the annual fees in time |
Free format text: REFERENTE AS 17A, 18A, 19A E 20A ANUIDADES. |
|
| B24J | Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12) |
Free format text: EM VIRTUDE DA EXTINCAO PUBLICADA NA RPI 2606 DE 15-12-2020 E CONSIDERANDO AUSENCIA DE MANIFESTACAO DENTRO DOS PRAZOS LEGAIS, INFORMO QUE CABE SER MANTIDA A EXTINCAO DA PATENTE E SEUS CERTIFICADOS, CONFORME O DISPOSTO NO ARTIGO 12, DA RESOLUCAO 113/2013. |