JPS63194307A - Humidity sensitive ceramics - Google Patents
Humidity sensitive ceramicsInfo
- Publication number
- JPS63194307A JPS63194307A JP62027591A JP2759187A JPS63194307A JP S63194307 A JPS63194307 A JP S63194307A JP 62027591 A JP62027591 A JP 62027591A JP 2759187 A JP2759187 A JP 2759187A JP S63194307 A JPS63194307 A JP S63194307A
- Authority
- JP
- Japan
- Prior art keywords
- humidity
- moisture
- sensitive ceramics
- humidity sensitive
- sensitive ceramic
- 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
- 239000000919 ceramic Substances 0.000 title claims description 14
- 229910052768 actinide Inorganic materials 0.000 claims description 3
- 150000001255 actinides Chemical class 0.000 claims description 3
- 239000000654 additive Substances 0.000 claims description 2
- 230000000996 additive effect Effects 0.000 claims description 2
- 229910052684 Cerium Inorganic materials 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 229910052787 antimony Inorganic materials 0.000 claims 1
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 229910052733 gallium Inorganic materials 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 229910052726 zirconium Inorganic materials 0.000 claims 1
- 230000035945 sensitivity Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- WMWLMWRWZQELOS-UHFFFAOYSA-N bismuth(iii) oxide Chemical compound O=[Bi]O[Bi]=O WMWLMWRWZQELOS-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- -1 Pr2O3 Inorganic materials 0.000 description 1
- 229910005224 Ga2O Inorganic materials 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- NLQFUUYNQFMIJW-UHFFFAOYSA-N dysprosium(III) oxide Inorganic materials O=[Dy]O[Dy]=O NLQFUUYNQFMIJW-UHFFFAOYSA-N 0.000 description 1
- VQCBHWLJZDBHOS-UHFFFAOYSA-N erbium(III) oxide Inorganic materials O=[Er]O[Er]=O VQCBHWLJZDBHOS-UHFFFAOYSA-N 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- GEYXPJBPASPPLI-UHFFFAOYSA-N manganese(III) oxide Inorganic materials O=[Mn]O[Mn]=O GEYXPJBPASPPLI-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 1
- RUDFQVOCFDJEEF-UHFFFAOYSA-N yttrium(III) oxide Inorganic materials [O-2].[O-2].[O-2].[Y+3].[Y+3] RUDFQVOCFDJEEF-UHFFFAOYSA-N 0.000 description 1
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、感湿セラミックに関し、特に、電子レンジ
、オーブン、食器乾燥機などの食品調理器をはじめ各種
機器の湿度センサとして広く用いることができる感湿セ
ラミックに関する。Detailed Description of the Invention (Industrial Application Field) The present invention relates to humidity-sensitive ceramics, and in particular can be widely used as humidity sensors for various appliances including food cookers such as microwave ovens, ovens, and dish dryers. Regarding moisture-sensitive ceramics.
（従来の技術）
従来、このような用途に用いられる感湿セラミックとし
ては、ＭｇＣｒ２０４−Ｔ Ｉｎ２、ＺｎＯ−Ｃｒ２０
３−ｌ。ｉ２０、ｖ２０ｓ−Ｔｉ０２などがあり、これ
らの多くは湿度センサの材料として使用されている。た
とえば、特公昭５６−６１２１号公報には、加熱クリー
ニングが容易にでき、かつ安定な特性を示す感湿セラミ
ックが開示きれている。(Prior Art) Conventionally, moisture-sensitive ceramics used for such applications include MgCr204-T In2 and ZnO-Cr20.
3-l. i20, v20s-Ti02, etc., and many of these are used as materials for humidity sensors. For example, Japanese Patent Publication No. 56-6121 discloses a moisture-sensitive ceramic that can be easily heated and cleaned and exhibits stable characteristics.
（発明が解決しようとする問題点）
しかしながら、これら従来の感湿セラミックは、１５０
℃以−ヒの高温域において感湿特性が低下したり、また
、低下しなくてもその特性が要求を満足でなかったりす
るため、たとえば、高温域で絶対湿度を検知することが
要求される電子レンジなどでは、その要求を満たすこと
ができなかった。(Problems to be Solved by the Invention) However, these conventional moisture-sensitive ceramics have a
For example, it is required to detect absolute humidity in a high-temperature range because the humidity-sensing characteristics deteriorate in a high-temperature range of ℃ or higher, or even if they do not deteriorate, the characteristics do not meet the requirements. Microwave ovens and the like were unable to meet this demand.
したがって、こめ発明は、室温から高温域まで感度の良
好な感湿セラミックを提供するものである。Therefore, the present invention provides a moisture-sensitive ceramic having good sensitivity from room temperature to high temperature range.
（問題点を解決するための手段）
この発明は、次の一般式、
八Ｂ１−ｘＢ′Ｘ０３（０．０≦ｘ≦０．３０）からな
る主成分に、Ｍ２Ｏ３からなる添加物を１０．０モル％
以下含有させた感湿セラミック。(Means for Solving the Problems) This invention provides the following general formula: 10. 0 mol%
Moisture-sensitive ceramic containing the following:
ただし、＾はＣａ、Ｓｒ、Ｈａのうち少なくとも１種Ｂ
ＬｔＣｅ、Ｚｒのうち少なくとも１種８°はアクチナイ
ドを除＜ ｌｌＩ ａ族およびＩｎのうち少なくとも１
種
ＮはＦｅ１Ｃｒ、＾Ｊ２ＳＧａ１ＳｂＪｎ−Ｃｏ１Ｎｉ
１Ｂｉのうち少なくとも１種
この発明の感湿セラミックは、上記した組成を構成する
各種材料を調合し、調合原料を混合して仮焼し、この仮
焼粉末にバインダを加えたのち成形し、さらに成形体を
焼成することにより得られる。そして、得られた焼結体
の表面にポーラスな１（１を付与することにより湿度セ
ンサが得られることになる。However, ^ is at least one type B among Ca, Sr, and Ha.
At least one of LtCe and Zr 8° excludes actinide < llI At least one of a group and In
Species N is Fe1Cr, ^J2SGa1SbJn-Co1Ni
The moisture-sensitive ceramic of the present invention having at least one type of 1Bi is prepared by blending various materials constituting the above-mentioned composition, mixing and calcining the blended raw materials, adding a binder to the calcined powder, and then molding. Obtained by firing a molded body. A humidity sensor is obtained by adding porous 1 (1) to the surface of the obtained sintered body.
（発明の効果）
この発明の感湿セラミックによれば、信頼性が高く、し
かも１５０℃以Ｈの高温域でも、絶対湿度の検知ができ
る湿度センサを提供することができ、また検温感度の経
時変化が小ざく、さらには高湿側から低湿側への応答が
速いという効果を有する。(Effects of the Invention) According to the humidity-sensitive ceramic of the present invention, it is possible to provide a humidity sensor that is highly reliable and can detect absolute humidity even in a high temperature range of 150° C. or higher, and also that temperature detection sensitivity changes over time. It has the effect that the change is small and the response from the high humidity side to the low humidity side is quick.
（実施例）
以下に、この発明にかかる感湿セラミックについて詳細
に説明する。(Example) Below, the moisture-sensitive ceramic according to the present invention will be described in detail.
原料として、主成分となるＣａ（：（１３、ＳｒＣ［］
３、Ｈａ（：０３、ＣｅＯ２、ＺｒＯ２、【、ａ２０３
、！Ｊｄ２０３、Ｙ２Ｏ３、Ｅｒ２Ｏ３、Ｄｙ２Ｏ３、
Ｐｒ２Ｏ３、Ｓｍ２Ｏ３，５ｃ２０３、■ｎ２０３、Ｆ
ｅ２Ｏ３、〔：Ｉ・２【］３、八Ａ２（１３、Ｇａ２Ｏ
３，５ｂ２０３、Ｍｎ２Ｏ３、Ｃｏ２］］３、Ｎｉ２Ｏ
３、およびＢｉ２Ｏ３を用意し、これらを第１表に示す
組成になるように秤量した、これらの秤量物をボールミ
ルで湿式混合した。次に、これを脱水、乾燥し、１２０
０℃で２時間仮焼した。そして、この仮焼物を粉砕し、
酢酸ビニル系樹脂を１０重量２加えて混合し、得らｉま
た造粒粉末を約２ｔ、ｏｎ／ｃｍ２の圧力で直径１０ｍ
ｍ ％厚み０．５ｍｉの円板に成形した。この成形円
板を空気中で１３５０℃の温度で２時間焼成した。得ら
れた直径８．００龍、厚み０．４５ｍｍの焼結体の両表
面に直径７．００關の白金のポーラス電４１ ｒｅ付与
して湿度センサとした。As a raw material, the main component Ca(:(13, SrC[]
3, Ha(:03, CeO2, ZrO2, [, a203
,! Jd203, Y2O3, Er2O3, Dy2O3,
Pr2O3, Sm2O3, 5c203, ■n203, F
e2O3, [:I・2[]3, 8A2(13, Ga2O
3,5b203,Mn2O3,Co2]]3,Ni2O
3 and Bi2O3 were prepared and weighed so as to have the composition shown in Table 1. The weighed products were wet-mixed in a ball mill. Next, this was dehydrated and dried, and
It was calcined at 0°C for 2 hours. Then, this calcined material is crushed,
Add 10 parts by weight of vinyl acetate resin and mix, and the resulting granulated powder is heated to about 2 tons and a diameter of 10 m at a pressure of on/cm2.
It was molded into a disk with a thickness of 0.5 mm. This shaped disk was fired in air at a temperature of 1350° C. for 2 hours. A humidity sensor was prepared by applying platinum porous electrodes 41 re of a diameter of 7.0 mm to both surfaces of the obtained sintered body having a diameter of 8.0 mm and a thickness of 0.45 mm.
このようにして得た湿度センサを用いて、水蒸気を１０
４ｐｐ＋ｏｖ（１量比表示）含む４５０℃の雰囲気中の
抵抗値（Ｒ）＋１）、および水蒸気を１１０５ｐｐ＋ｖ
含む４５０℃の雰囲気中の抵抗値（ＲＨ２）を、それぞ
れ測定した。Using the humidity sensor obtained in this way, water vapor can be detected by
Resistance value (R) in an atmosphere at 450°C containing 4pp+ov (quantity ratio display) +1), and water vapor at 1105pp+v
The resistance value (RH2) in an atmosphere of 450° C. was measured.
ざらに、これらの値を次式に代入して、湿度感度Ｓを算
出した。Roughly, these values were substituted into the following equation to calculate the humidity sensitivity S.
ＲＨ１＝ＲＨ２・（Ｈ１／）１２） −’）１１ ：
１０１０４ｐｐ、 Ｈ２： １０１０５ｐｐこのよ
うにして、第１表に示したような結果を得た。RH1=RH2・(H1/)12) −′)11:
10104pp, H2: 10105pp In this way, the results shown in Table 1 were obtained.
なお、第１表中＊印を付した試料はこの発明範囲外のも
のであり、それ以外はこの発明範囲内のものである。Note that the samples marked with * in Table 1 are outside the scope of this invention, and the others are within the scope of this invention.
（以下、余白）
第 １ 表
第１表から明らかなように、この発明の感湿セラミック
について、その組成中のＸが０．３を越えると湿度感度
が低下する（試料番号５、試料番号１３）。また、添加
物のＭＯが１０．０モル％を越えると同様に湿度感度が
低下する（試料番号９、試料番号１３、試料番号１４、
試料番号１９、試料番号３０）。(Hereinafter, blank space) Table 1 As is clear from Table 1, the humidity sensitivity of the humidity-sensitive ceramic of the present invention decreases when X in the composition exceeds 0.3 (Sample No. 5, Sample No. 13). ). Furthermore, when the MO of the additive exceeds 10.0 mol%, the humidity sensitivity similarly decreases (Sample No. 9, Sample No. 13, Sample No. 14,
sample number 19, sample number 30).
なお、この発明の感湿セラミックは、第１表以外のアク
チノイドを除（ＩＩＩ ａ族の元素、たとえば、Ｐｍ、
Ｅｕ１Ｇｄ、Ｔｂ、）ｔｏ、Ｔｍ、Ｙｂ、１．ｕを用い
てもよい。The moisture-sensitive ceramic of the present invention excludes actinides other than those listed in Table 1 (group III a elements, such as Pm,
Eu1Gd, Tb, )to, Tm, Yb, 1. u may also be used.
また、製法については、シート成形方式や、ベーストに
よる厚膜方式など、ヒ記した実施例の方法とは異なる他
の方法を用いてもよい。Further, as for the manufacturing method, other methods different from those of the above-mentioned embodiments may be used, such as a sheet molding method or a thick film method using a base.
Claims (1)
０）からなる主成分に、Ｍ＿２Ｏ＿３からなる添加物を
１０．０モル％以下含有させた感湿セラミック。 ただし、ＡはＣａ、Ｓｒ、Ｂａのうち少なくとも１種Ｂ
はＣｅ、Ｚｒのうち少なくとも１種 Ｂ′はアクチナイドを除くIIIａ族およ びＩｎのうち少なくとも１種 ＭはＦｅ、Ｃｒ、Ａｌ、Ｇａ、Ｓｂ、Ｍｎ、Ｃｏ、Ｎｉ
、Ｂｉのうち少なくとも１種[Claims] The following general formula, AB_1_−_xB'_xO_3 (0.0≦x≦0.3
Moisture-sensitive ceramic containing 10.0 mol% or less of an additive consisting of M_2O_3 in the main component consisting of 0). However, A is at least one of Ca, Sr, and Ba.
is at least one of Ce and Zr; B' is at least one group IIIa group excluding actinides; and at least one of In; M is Fe, Cr, Al, Ga, Sb, Mn, Co, Ni
, at least one of Bi
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62027591A JPS63194307A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62027591A JPS63194307A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63194307A true JPS63194307A (en) | 1988-08-11 |
Family
ID=12225190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62027591A Pending JPS63194307A (en) | 1987-02-09 | 1987-02-09 | Humidity sensitive ceramics |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63194307A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022148144A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic, atomization core and preparation method therefor |
| WO2022148146A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic and preparation method therefor, and atomization core |
| WO2022148145A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic and preparation method therefor, and atomization core |
-
1987
- 1987-02-09 JP JP62027591A patent/JPS63194307A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022148144A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic, atomization core and preparation method therefor |
| WO2022148146A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic and preparation method therefor, and atomization core |
| WO2022148145A1 (en) * | 2021-01-08 | 2022-07-14 | 惠州市新泓威科技有限公司 | Humidity-sensitive porous ceramic and preparation method therefor, and atomization core |
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