JP2014516333A - 純相の多成分系の製造方法、純相の多成分系をベースとするセラミック材料並びにそれらから形成された成形体及び複合体 - Google Patents
純相の多成分系の製造方法、純相の多成分系をベースとするセラミック材料並びにそれらから形成された成形体及び複合体 Download PDFInfo
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Abstract
Description
該セラミック粉末の棒状粒子モルホロジーは、これから製造された成形体中で、該粒子の優先配向、ひいては該強誘電性ドメインのより良好な配向を生じさせることができる。これは、その圧電効果を、不規則に形成された粒子を有するセラミック粉末製の成形体に比べて、有意に高めることができる。
第一例において、(K0.52Na0.44Li0.04)(Nb0.86Ta0.10Sb0.04)O3を製造する。そのためには、1リットル当たり126.6gのNb2O5入りのフッ化水素酸(40%)中H2NbF7溶液3.160lと、1リットル当たり149.84gのTa2O5入りのフッ化水素酸(40%)中H2TaF7溶液0.516lとを2lテフロンビーカー中で混合し、20.4gのSb2O5を添加し、2日間撹拌する。
第二例において、(K0.52Na0.44Zn0.04)(Nb0.86Ta0.10Sb0.04)O3を製造する。そのためには、1リットル当たり126.6gのNb2O5入りのフッ化水素酸(40%)中H2NbF7溶液3.160lと、1リットル当たり149.84gのTa2O5入りのフッ化水素酸(40%)中H2TaF7溶液0.516lとを2lテフロンビーカー中で混合し、20.4gのSb2O5を添加し、2日間撹拌する。その固体のろ過後に、その混合水酸化物を、アンモニア溶液(25%)を用いてpH=9まで沈殿させる。その際に、pH=6までリトマス紙を、引き続きガラス電極を、そのpH値の測定に使用した。その懸濁液をろ過し、その残留物をアンモニア水5lで、その後水2lで、洗浄する。
第三例において、(K0.52Na0.44Cu0.04)(Nb0.86Ta0.10Sb0.04)O3を製造する。そのためには、1リットル当たり126.6gのNb2O5入りのフッ化水素酸(40%)中H2NbF7溶液3.160lと、1リットル当たり149.84gのTa2O5入りのフッ化水素酸(40%)中H2TaF7溶液0.516lとを2lテフロンビーカー中で混合し、20.4gのSb2O5を添加し、2日間撹拌する。
第四例において、規則的な粒子を有する(K0.52Na0.44Li0.04)(Nb0.86Ta0.10Sb0.04)O3を製造する。そのためには、448.8gのKOH、414.0gのNaOH、16.3gのLiOH・H2Oを脱イオンH2O(VE)1600ml中に溶解させる。次いで、フッ化水素酸中H2TaF7溶液(c=142g/l)311.2mlと、フッ化水素酸中H2NbF7(c=113g/l)2033.9mlとをテフロンビーカー中で混合し、21.02gのKSb(OH)6を添加する。室温への該フッ化水素酸溶液の冷却後に、該アルカリ溶液を一滴ずつ120分かけて添加する。
第五例において、棒状粒子を有する(K0.16Na0.80Li0.04)(Nb0.86Ta0.10Sb0.04)O3を製造する。そのためには、慎重に、224.4gのKOH、207.0gのNaOH、8.15gのLiOH・H2Oを脱イオンH2O(VE)800ml中に溶解させる。次いで、フッ化水素酸中H2TaF7溶液(c=150g/l)147.3mlと、フッ化水素酸中H2NbF7(c=116g/l)960.5mlとをテフロンビーカー中で混合し、10.51gのKSb(OH)6を添加する。室温への該フッ化水素酸溶液の冷却後に、該アルカリ溶液を一滴ずつ105分かけて12.5のpH値まで添加する。この瞬間に棒状相の形成が、図5b)からの顕微鏡写真から読み取ることができるように、始まる。
Claims (26)
- 水酸化物ベース及び/又は酸化物ベースの均質な多成分系、特に棒状モルホロジーを有する均質な多成分系の製造方法であって、該多成分系は、Mo、W、Nb、Re、Zr、Hf、V、Sb、Si、Al及びTaの群からの第一高融点金属と、Mo、W、Nb、Re、Zr、Hf、V、Sb、Si、Al及びTaの群からの第二高融点金属とを有し、かつ第一高融点金属と第二高融点金属とは異なり、その際に第一高融点金属及び/又は第二高融点金属が特にフルオロ錯体及び/又はオキシフルオロ錯体、特にH2NbF7、H2TaF7、HSbF6、H2ZrF6、H2SiF6、H3AlF6等として存在し、
その際に第一選択肢において、第一高融点金属が第一フッ化水素酸溶液中に存在し、かつ第二高融点金属が第二フッ化水素酸溶液中に存在し、
かつ第一高融点金属を有する第一フッ化水素酸溶液と、第二高融点金属を有する第二フッ化水素酸溶液とを混合して、溶解した第一高融点金属及び第二高融点金属を有するフッ化水素酸混合溶液が存在する、
又は
第二選択肢において、第一高融点金属と第二高融点金属とが、選択的なフッ化水素酸混合溶液中に溶解されており、
かつ
最後に、該フッ化水素酸混合溶液又は該選択的なフッ化水素酸混合溶液を沈殿剤で沈殿させて、固体混合物が懸濁液中に存在する、
水酸化物ベース及び/又は酸化物ベースの均質な多成分系の製造方法。 - 該フッ化水素酸混合溶液又は該選択的なフッ化水素酸混合溶液に、Mo、W、Nb、Re、Zr、Hf、V及びTaの群からの溶解した第三の又は更なる高融点金属を有する第三の又は更なるフッ化水素酸溶液を、該沈殿前に混合する、請求項1記載の方法。
- 該フッ化水素酸混合溶液又は該選択的なフッ化水素酸混合溶液中に、Mo、W、Nb、Re、Zr、Hf、V及びTaの群からの第三の又は更なる高融点金属を、該沈殿前に溶解させる、請求項1又は2記載の方法。
- Ti、Zr、Sn、Fe、Co、Ni、Ca、Zn、Pd、Cd、Al、Si、P、Ge、As、Se、Sb、Te、Sc、Y、Ybの群からのドーピング元素が、
第一フッ化水素酸溶液中及び/又は第二フッ化水素酸溶液中及び/又は該フッ化水素酸混合溶液中及び/又は該選択的なフッ化水素酸混合溶液中及び/又は該沈殿剤中及び/又は第一フッ化水素酸ドーピング元素溶液中に溶解されており、
その際に該ドーピング元素が、該ドーピング元素溶液中及び/又は該沈殿剤中に溶解されている場合には、該ドーピング元素溶液及び/又は該沈殿剤を、第一フッ化水素酸溶液、第二フッ化水素酸溶液、該フッ化水素酸混合溶液又は該選択的なフッ化水素酸混合溶液に添加して、該ドーピング元素が、少なくとも部分的に酸化物又は水酸化物として該沈殿の際に沈殿析出する、請求項1から3までのいずれか1項記載の方法。 - 該沈殿剤が、塩基性溶液、塩基性に作用する固体又は塩基性に作用するガスを有し、かつ該沈殿を該フッ化水素酸混合溶液又は該選択的なフッ化水素酸混合溶液の6.5〜14のpH値で行う、請求項1から4までのいずれか1項記載の方法。
- 該塩基性溶液が、第一アルカリ金属水酸化物溶液及び/又は第一アルカリ土類金属水酸化物溶液を含有するか、
又は複数のアルカリ金属水酸化物溶液の第一混合物及び/又は複数のアルカリ土類金属水酸化物溶液の第一混合物を含有するか、又は
1種以上のアルカリ金属水酸化物溶液の第一混合物及び/又は1種以上のアルカリ土類金属水酸化物溶液の第一混合物を含有し、その際に該アルカリ金属水酸化物溶液及び/又はアルカリ土類金属水酸化物溶液が、少なくとも1種の溶解した両性元素を有し、
その際に第一アルカリ金属水酸化物溶液が、第一アルカリ金属元素を有し、かつ第一アルカリ土類金属水酸化物溶液が、第一アルカリ土類金属元素を有し、かつ複数のアルカリ金属水酸化物溶液の第一混合物が、複数のアルカリ金属元素を有し、かつ複数のアルカリ土類金属水酸化物溶液の第一混合物が、複数のアルカリ土類金属元素を有し、
その結果、第一中間生成物を有する第一懸濁液が得られ、第一中間生成物が固体分で、第一アルカリ金属元素又は複数のアルカリ金属元素の混合物及び/又は第一アルカリ土類金属元素又はアルカリ土類金属元素の混合物を均一に分布して有する、請求項5記載の方法。 - 第一アルカリ金属水酸化物溶液及び/又は第一アルカリ土類金属水酸化物溶液が、水性水酸化物及び/又は水酸化物錯体、特にKOH、LiOH、NaOH、RbOH、Ca(OH)2及び/又は亜鉛、アルミニウム、アンチモン、スズの群から選択される元素の水酸化物錯体を有する、請求項6記載の方法。
- 該懸濁液をろ過して、該固体混合物が懸濁残留物として存在する、請求項1から7までのいずれか1項記載の方法。
- 該懸濁残留物を洗浄する、請求項8記載の方法。
- 該懸濁液又は該懸濁残留物を乾燥させて、乾燥された残留物が存在し、その際に該乾燥を特に≦150℃の温度で行う、請求項1から9までのいずれか1項記載の方法。
- 該懸濁液又は該懸濁残留物を混合する、請求項1から10までのいずれか1項記載の方法。
- 該懸濁液、該懸濁残留物、該乾燥された残留物、該混合された懸濁残留物又は該混合された懸濁液に、水性ベース又は有機ベースの塩基性溶液を添加して、第一中間生成物を得る、請求項1から11までのいずれか1項記載の方法。
- 該塩基性溶液の添加を、撹拌しながら行う、請求項9記載の方法。
- 該塩基性溶液が、アルカリ金属水酸化物溶液及び/又はアルカリ土類金属水酸化物溶液又は複数のアルカリ金属水酸化物溶液の混合物及び/又は複数のアルカリ土類金属水酸化物溶液の混合物を有し、その際に該アルカリ金属水酸化物溶液が、アルカリ金属元素を有し、かつ該アルカリ土類金属水酸化物溶液が、アルカリ土類金属元素を有し、かつ複数のアルカリ金属水酸化物溶液の該混合物が複数のアルカリ金属元素を有し、かつ複数のアルカリ土類金属水酸化物混合物の該混合物が、複数のアルカリ土類金属元素を有しており、
その結果、第二中間生成物が得られ、第二中間生成物は、アルカリ金属元素又は複数のアルカリ金属元素の混合物及び/又はアルカリ土類金属元素又はアルカリ土類金属元素の混合物を均一に分布して有する、請求項12又は13記載の方法。 - 該塩基性溶液の添加を、0℃〜40℃の温度で、特に室温で、及び800mbar〜1200mbarの圧力で、特に常圧で、行う、請求項12から14までのいずれか1項記載の方法。
- 第一中間生成物又は第二中間生成物を100℃〜1000℃、特に400℃〜700℃の温度で熱処理して、セラミック材料及び副生物が生じる、請求項1から15までのいずれか1項記載の方法。
- 該副生物を、水を用いて洗い流す、請求項16記載の方法。
- 該セラミック材料を乾燥及び/又は粉砕して、セラミック成形用の均質なセラミック粉末が存在する、請求項17記載の方法。
- 粒子凝集を制御するための助剤を、該粉砕及び/又は該乾燥の際に添加する、請求項18記載の方法。
- 生じる処理生成物を乾燥させる、スラリー化する、ろ別する及び/又は粉砕する、請求項1から19までのいずれか1項記載の方法。
- セラミック材料、特に粉末又はペーストの形態のセラミック材料であって、
該セラミック材料が、請求項1から20までのいずれか1項記載の方法により得られることを特徴とする、セラミック材料。 - 請求項21記載のセラミック材料から製造される成形体であって、
該成形体が、特に一軸加圧成形又はコールドアイソスタチックプレス、場合により引き続き未焼結接触層の積層及び/又はスクリーン印刷を伴うテープ成形、PIMs(Power injection moulding)、湿式粉末噴霧法、鋳込成形又は焼結を用いて得られる、成形体。 - 金属接点が該成形体に、特に該焼結の際に、取り付けられる、請求項22記載の成形体。
- 該金属接点が≦25%、好ましくは≦15%、特に好ましくは≦7.5%のPd含量を有するAg−Pd合金を有する、請求項23記載の成形体。
- 該金属接点が、Pdを含まないAg合金を有する、請求項22又は23記載の成形体。
- 複合体、特に、測距儀、超音波トランスデューサ、インクジェットノズル、コモンレール−ディーゼルインジェクタにおいて使用されるような、圧電素子であって、
該複合体が請求項22から25までのいずれか1項記載の成形体を有する、複合体。
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US9331262B2 (en) * | 2013-05-20 | 2016-05-03 | Tdk Corporation | Thin film piezoelectric element, thin film piezoelectric actuator, thin film piezoelectric sensor, hard drive disk, and inkjet printer device |
EP2927202A1 (en) * | 2014-04-04 | 2015-10-07 | Paris Sciences et Lettres - Quartier Latin | Transparent metal fluoride ceramic |
US10435806B2 (en) | 2015-10-12 | 2019-10-08 | Prc-Desoto International, Inc. | Methods for electrolytically depositing pretreatment compositions |
CN111517787A (zh) * | 2020-04-17 | 2020-08-11 | 上海工程技术大学 | 一种铌酸银基反铁电陶瓷材料及其制备方法和应用 |
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DE102011010346A1 (de) | 2012-08-09 |
CN103339086A (zh) | 2013-10-02 |
WO2012104430A1 (de) | 2012-08-09 |
EP2670721A1 (de) | 2013-12-11 |
DE102011010346B4 (de) | 2014-11-20 |
KR101948342B1 (ko) | 2019-02-14 |
KR20140002748A (ko) | 2014-01-08 |
JP2016222536A (ja) | 2016-12-28 |
BR112013019543A2 (pt) | 2016-10-04 |
JP5968917B2 (ja) | 2016-08-10 |
EP2670721B1 (de) | 2018-08-22 |
JP6312752B2 (ja) | 2018-04-18 |
BR112013019543B1 (pt) | 2020-12-08 |
US20130306902A1 (en) | 2013-11-21 |
CN103339086B (zh) | 2018-12-21 |
US9309158B2 (en) | 2016-04-12 |
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