JP5005564B2 - 積層体の形成方法、センサ素子の作製方法、およびセンサ素子 - Google Patents
積層体の形成方法、センサ素子の作製方法、およびセンサ素子 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 47
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000003475 lamination Methods 0.000 claims description 57
- 239000000853 adhesive Substances 0.000 claims description 49
- 230000001070 adhesive effect Effects 0.000 claims description 48
- 238000007639 printing Methods 0.000 claims description 41
- 239000000919 ceramic Substances 0.000 claims description 35
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- 239000012939 laminating adhesive Substances 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 55
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 51
- 239000007784 solid electrolyte Substances 0.000 description 30
- 239000000758 substrate Substances 0.000 description 26
- 239000001301 oxygen Substances 0.000 description 25
- 229910052760 oxygen Inorganic materials 0.000 description 25
- 238000005259 measurement Methods 0.000 description 23
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 20
- 238000009792 diffusion process Methods 0.000 description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 18
- 238000011156 evaluation Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 230000008859 change Effects 0.000 description 10
- 125000006850 spacer group Chemical group 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- -1 oxygen ion Chemical class 0.000 description 7
- 238000005755 formation reaction Methods 0.000 description 6
- 239000011195 cermet Substances 0.000 description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
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- 238000012360 testing method Methods 0.000 description 3
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N Butyraldehyde Chemical compound CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
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- 239000000463 material Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Description
p≧−(3/2)T+190、
p≦−(3/2)T+250、
T≧70、および
T≦100
で定まる領域に含まれる点(T,p)の示す温度Tおよびゲージ圧pである、ことを特徴とする。
図1は、本実施の形態に係るガスセンサ100の構成を概略的に示す断面模式図である。ガスセンサ100は、測定対象とするガス(被測定ガス)中の所定のガス成分を検出し、さらにはその濃度を測定するためのものである。本実施の形態においては、ガスセンサ100が窒素酸化物(NOx)を検出対象成分とするNOxセンサである場合を例として説明を行う。係るガスセンサ100は、ジルコニア(ZrO2)等の酸素イオン伝導性固体電解質からなるセンサ素子101を有する。
次に、本実施の形態に係るセンサ素子101の作製方法について説明する。
次に、センサ素子101を作製する際に、所定の2枚のグリーンシートについて先行積層を行うことによる効果、すなわちグリーンシートの変形抑制の効果について、より詳細に説明する。ここでは、上述の場合と同様に、第1基板層1と第2基板層2とを構成することになるグリーンシートを先行積層する場合を例として説明する。
上述したような工程で得られた積層体に対して、積層が良好に行われているかを評価する方法には種々のものがあるが、本実施の形態では、以下の方法によって積層状態の評価を行う。
次に、本積層および先行積層の際の温度および圧力の条件(加熱加圧条件)について説明する。
次に、接着ペースト中のバインダー量の条件について説明する。
続いて、接着用ペーストの乾燥条件について説明する。グリーンシートを接着し積層する際に、接着用ペーストの乾燥が十分でない場合、シート同士を積層する際に十分な接着力を得ることができないことになる。ここで、乾燥が十分ではないとは、接着用ペースト中の溶剤の飛散量が少ないこと、すなわち、乾燥時における溶剤の重量減少率が小さいことに相当する。一方、溶剤の飛散量が多過ぎると、すなわち、溶剤の重量減少率が大き過ぎると、グリーンシート同士を密着させる際にバインダーが溶剤に溶解にくくなるため、グリーンシート同士の接着が弱くってしまうことになる。
2 第2基板層
3 第3基板層
4 第1固体電解質層
5 スペーサ層
6 第2固体電解質層
70 ヒータ
71 ヒータ電極
72 ヒータ絶縁層
100 ガスセンサ
101 センサ素子
202 接着用ペーストからなる接着剤
203 積層体
BS ブランクシート
GS1 グリーンシート
PT1 印刷パターン
PT2 積層体の最表面のグリーンシートの印刷されているパターン
Claims (7)
- 所定のパターンを印刷した複数のセラミックスグリーンシートを所定の順序で積層して積層体を形成する方法であって、
複数のセラミックスグリーンシートのうち少なくとも2枚を積層接着することによって実質的に一のセラミックスグリーンシートとして取り扱える先行積層シートを形成する第1の積層工程と、
前記先行積層シートと、前記複数のセラミックスグリーンシートのうち前記先行積層シートの形成に用いなかったセラミックスグリーンシートである非先行積層シートとに対して所定のパターンを印刷する印刷工程と、
前記印刷工程によってパターンが印刷された前記先行積層シートと前記非先行積層シートとを所定の順序で積層接着する第2の積層工程と、
を備え、前記先行積層シートの形成に用いる前記少なくとも2枚のセラミックスグリーンシートとして、前記複数のセラミックスグリーンシートのうち、前記先行積層シートを形成して前記印刷工程に供した場合に、前記先行積層シートに対する印刷回数がそのときに前記非先行積層シートとなるセラミックスグリーンシートの各々に対する印刷回数よりも大きくなるものを選択する、
ことを特徴とする積層体の形成方法。 - 請求項1に記載の積層体の形成方法であって、
前記第1および第2の積層工程において前記セラミックスグリーンシート同士の接着に用いる接着用ペーストが、バインダーを前記接着用ペースト全体100重量部に対して12重量部以上16重量部以下含む、
ことを特徴とする積層体の形成方法。 - 請求項1または請求項2に記載の積層体の形成方法であって、
前記第1および第2の積層工程が、
前記セラミックスグリーンシート同士を接着させるべく前記セラミックスグリーンシートに接着用ペーストを塗布する塗布工程と、
前記塗布工程において塗布された前記接着用ペーストを乾燥させる乾燥工程と、
をそれぞれ備え、
前記乾燥工程においては、前記接着用ペースト中の溶剤の重量減少率が80%以上90%以下となるように前記接着用ペーストを乾燥させる、
ことを特徴とする積層体の形成方法。 - 請求項1ないし請求項3のいずれかに記載の積層体の形成方法であって、
前記第1の積層工程における前記先行積層シートの形成または前記第2の積層工程における前記積層体の形成の少なくとも一方における加熱温度と加圧圧力とが、
ゲージ圧をp[kgf/cm 2 ]とし、温度をT[℃]としたT−p平面において、
p≧−(3/2)T+190、
p≦−(3/2)T+250、
T≧70、および
T≦100
で定まる領域に含まれる点(T,p)の示す温度Tおよびゲージ圧pである、
ことを特徴とする積層体の形成方法。 - 請求項1ないし請求項4のいずれかに記載の積層体の形成方法によって積層体を形成する工程を含むことを特徴とする、ガスセンサのセンサ素子の作製方法。
- 請求項5に記載のセンサ素子の作製方法であって、
前記先行積層シートの形成に用いられる前記少なくとも2枚のセラミックスグリーンシートが、前記複数のグリーンシートのうち前記印刷工程において前記パターンとしてヒータ部が形成される少なくとも2枚のセラミックスグリーンシートである、
ことを特徴とするセンサ素子の作製方法。 - 請求項5または請求項6に記載の作製方法によって作製されたセンサ素子。
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| US12/358,450 US8226784B2 (en) | 2008-01-28 | 2009-01-23 | Method of forming laminated body and method of manufacturing sensor element |
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| US8132442B2 (en) * | 2008-09-22 | 2012-03-13 | Siemens Energy, Inc. | Compressible ceramic seal |
| US8646306B2 (en) * | 2009-12-14 | 2014-02-11 | Ngk Insulators, Ltd. | Method for manufacturing sensor element for gas sensor |
| JP5271944B2 (ja) | 2010-03-18 | 2013-08-21 | 日本碍子株式会社 | ガスセンサ |
| JP5425833B2 (ja) * | 2011-03-31 | 2014-02-26 | 日本碍子株式会社 | ガスセンサ |
| JP5951522B2 (ja) * | 2012-03-28 | 2016-07-13 | 日本碍子株式会社 | セラミックスペースト及び積層体 |
| JP6169989B2 (ja) * | 2014-02-06 | 2017-07-26 | 日本特殊陶業株式会社 | ガスセンサ素子およびガスセンサ |
| JP6573767B2 (ja) | 2014-03-28 | 2019-09-11 | 日本碍子株式会社 | 膜接合構造体の製法 |
| JP6530620B2 (ja) | 2014-03-28 | 2019-06-12 | 日本碍子株式会社 | 膜接合構造体の製法 |
| US10228346B2 (en) | 2014-12-04 | 2019-03-12 | Ngk Insulators, Ltd. | Gas sensor element and gas sensor |
| CN109389903B (zh) * | 2017-08-04 | 2021-01-29 | 京东方科技集团股份有限公司 | 柔性基板及其加工方法、加工系统 |
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| JP2005310554A (ja) * | 2004-04-21 | 2005-11-04 | Denso Corp | セラミックヒータ及びその製造方法並びにガスセンサ素子 |
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