JP2011138771A5 - - Google Patents
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- JP2011138771A5 JP2011138771A5 JP2010290336A JP2010290336A JP2011138771A5 JP 2011138771 A5 JP2011138771 A5 JP 2011138771A5 JP 2010290336 A JP2010290336 A JP 2010290336A JP 2010290336 A JP2010290336 A JP 2010290336A JP 2011138771 A5 JP2011138771 A5 JP 2011138771A5
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- oxide
- zinc oxide
- insulator
- zno
- weight
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Description
さらに、このＵＶ線を吸収する手段は金属酸化物を有するのが有利である。有利に、この場合、酸化チタン（ＴｉＯ2）及び／又は酸化亜鉛（ＺｎＯ）が使用される。この両方の材料はＵＶ線を有効に吸収し、適当なドーピングによって導電性特性を有することができる。さらに、この両方の酸化物は、燃焼室条件で極めて安定性である。従って、酸化チタン又は酸化亜鉛を用いて、絶縁体の電気的絶縁耐力を高めるために記載された方法の何れも可能である。第一に、焼結プロセスの前にこの酸化物を酸化アルミニウム中に分散させることができる。第二に、この酸化物を絶縁体の表面の少なくとも一部に集中させ、それによりＵＶ保護層を形成させることができる。第三に、この酸化物をドーピングし、それにより絶縁体の表面の少なくとも一部上に導電性の保護層を形成させることができる。 Furthermore, the means for absorbing UV radiation advantageously comprises a metal oxide. In this case, titanium oxide (TiO 2 ) and / or zinc oxide (ZnO) are preferably used. Both materials effectively absorb UV radiation and can have conductive properties by appropriate doping. Furthermore, both of these oxides are extremely stable at combustion chamber conditions. Thus, any of the methods described for increasing the electrical dielectric strength of an insulator using titanium oxide or zinc oxide is possible. First, the oxide can be dispersed in the aluminum oxide prior to the sintering process. Second, the oxide can be concentrated on at least part of the surface of the insulator, thereby forming a UV protection layer. Third, the oxide can be doped, thereby forming a conductive protective layer on at least a portion of the surface of the insulator.
さらに、本発明は、最初に酸化アルミニウム（Ａｌ2Ｏ3）からなるベースを焼結させ、引き続き酸化亜鉛（ＺｎＯ）からなるＵＶ保護層を、絶縁体の表面の少なくとも一部に焼き付ける、酸化アルミニウム（Ａｌ2Ｏ3）をベースとするセラミック絶縁体の製造方法に関する。この酸化亜鉛は、その低い蒸発温度に基づき、有利に付加的燃焼工程で＜１３００℃の温度で焼き付けられる。本発明によるセラミック絶縁体との関連で記載されたこの有利な実施態様は、酸化亜鉛を有するセラミック絶縁体の製造方法にも相応して有利に適用される。有利に、酸化アルミニウム（Ａｌ2Ｏ3）からなるベースは、１５３０℃〜１７３０℃の間で、特に１６１０℃〜１６５０℃の間で焼結され、酸化亜鉛（ＺｎＯ）は１３００℃未満で焼き付けられる。 Furthermore, the present invention provides an aluminum oxide that first sinters a base made of aluminum oxide (Al 2 O 3 ) and then bakes a UV protective layer made of zinc oxide (ZnO) onto at least part of the surface of the insulator. The present invention relates to a method for producing a ceramic insulator based on (Al 2 O 3 ). This zinc oxide is baked at a temperature of <1300 ° C., preferably in an additional combustion step, based on its low evaporation temperature. This advantageous embodiment described in the context of the ceramic insulator according to the invention is also advantageously applied correspondingly to a method for producing a ceramic insulator with zinc oxide. Advantageously, the base made of aluminum oxide (Al 2 O 3 ) is sintered between 1530 ° C. and 1730 ° C., in particular between 1610 ° C. and 1650 ° C., and zinc oxide (ZnO) is baked below 1300 ° C. .
有利な実施態様の場合に、酸化アルミニウムに関する酸化チタンの割合は０．０１〜２質量％、特に０．０１〜１質量％、特に０．４〜０．８質量％である。有利に、酸化アルミニウムに関する酸化亜鉛の割合は０．０１〜２質量％、特に０．０１〜１質量％、特に０．０１〜０．５質量％である。 In a preferred embodiment, the proportion of titanium oxide with respect to aluminum oxide is 0.01 to 2% by weight, in particular 0.01 to 1% by weight, in particular 0.4 to 0.8% by weight. Advantageously, the proportion of zinc oxide with respect to aluminum oxide is 0.01 to 2% by weight, in particular 0.01 to 1% by weight, in particular 0.01 to 0.5% by weight.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009055397.5 | 2009-12-30 | ||
| DE200910055397 DE102009055397A1 (en) | 2009-12-30 | 2009-12-30 | Ceramic insulator for use in spark plug in direct injection engine, has UV-protection layer absorbing UV-radiation and comprising thickness that ranges from forty to sixty micrometers, where insulator is designed based on aluminum oxide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2011138771A JP2011138771A (en) | 2011-07-14 |
| JP2011138771A5 true JP2011138771A5 (en) | 2011-09-01 |
Family
ID=44312465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010290336A Pending JP2011138771A (en) | 2009-12-30 | 2010-12-27 | Ceramic insulator, especially, ceramic insulator using aluminum oxide as base, and its manufacturing method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2011138771A (en) |
| CN (1) | CN102185256B (en) |
| DE (1) | DE102009055397A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013203566A1 (en) * | 2013-03-01 | 2014-09-04 | Robert Bosch Gmbh | spark plug |
| JP6631201B2 (en) | 2014-12-08 | 2020-01-15 | 株式会社デンソー | Ignition device and method for producing superhydrophilic film used therein |
| CN107408795A (en) | 2015-01-29 | 2017-11-28 | 弗拉明集团知识产权有限责任公司 | Spark plug insulator with ant-scaling coating and for making the minimum method of fouling |
| CN107248698B (en) * | 2017-06-29 | 2019-01-01 | 宋天顺 | A kind of resistor type spark plug |
| DE102019126831A1 (en) | 2018-10-11 | 2020-04-16 | Federal-Mogul Ignition Llc | SPARK PLUG |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2857639B2 (en) * | 1988-02-19 | 1999-02-17 | 日本特殊陶業株式会社 | High alumina insulator for spark plug |
| JP3447102B2 (en) * | 1994-03-17 | 2003-09-16 | 東燃ゼネラル石油株式会社 | Method for producing transparent UV-absorbing ceramic film |
| CA2287241A1 (en) * | 1998-02-27 | 1999-09-02 | Ngk Spark Plug Co., Ltd. | Spark plug, alumina insulator for spark plug, and method of manufacturing the same |
| JP2007042656A (en) * | 1998-05-22 | 2007-02-15 | Ngk Spark Plug Co Ltd | Spark plug and its manufacturing method |
| BR9902148A (en) * | 1998-05-22 | 1999-12-28 | Ngk Spark Plug Co | Spark plug and its manufacturing method. |
| JP4474724B2 (en) * | 1999-05-24 | 2010-06-09 | 株式会社デンソー | Lead-free glaze and spark plug |
| DE102005062115A1 (en) * | 2005-12-23 | 2007-06-28 | Robert Bosch Gmbh | Glow, ignition or heating element for combustion and/or heating devices, especially glow plugs, spark plugs or heaters has highly stable corrosion protection layer comprising mixture of SiO2 and other material |
-
2009
- 2009-12-30 DE DE200910055397 patent/DE102009055397A1/en not_active Withdrawn
-
2010
- 2010-12-27 JP JP2010290336A patent/JP2011138771A/en active Pending
- 2010-12-29 CN CN201010621982.8A patent/CN102185256B/en not_active Expired - Fee Related
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