JP2012096962A - 鉛系圧電材料及びその製造方法 - Google Patents
鉛系圧電材料及びその製造方法 Download PDFInfo
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- JP2012096962A JP2012096962A JP2010246730A JP2010246730A JP2012096962A JP 2012096962 A JP2012096962 A JP 2012096962A JP 2010246730 A JP2010246730 A JP 2010246730A JP 2010246730 A JP2010246730 A JP 2010246730A JP 2012096962 A JP2012096962 A JP 2012096962A
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- Prior art keywords
- lead
- piezoelectric material
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- based piezoelectric
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- 239000000463 material Substances 0.000 title claims abstract description 46
- 238000004519 manufacturing process Methods 0.000 title claims description 21
- 239000002245 particle Substances 0.000 claims abstract description 104
- 238000009826 distribution Methods 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims description 13
- 238000001027 hydrothermal synthesis Methods 0.000 claims description 9
- 239000002105 nanoparticle Substances 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 abstract description 6
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 34
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 30
- 239000007864 aqueous solution Substances 0.000 description 24
- 239000000126 substance Substances 0.000 description 24
- 239000011858 nanopowder Substances 0.000 description 23
- 239000010936 titanium Substances 0.000 description 23
- 239000002994 raw material Substances 0.000 description 21
- 229910052726 zirconium Inorganic materials 0.000 description 20
- 229910052719 titanium Inorganic materials 0.000 description 19
- 239000007788 liquid Substances 0.000 description 16
- 239000000843 powder Substances 0.000 description 14
- 229910052745 lead Inorganic materials 0.000 description 13
- 239000012530 fluid Substances 0.000 description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 12
- 229910052758 niobium Inorganic materials 0.000 description 11
- 239000010409 thin film Substances 0.000 description 11
- 239000002002 slurry Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- 229910052697 platinum Inorganic materials 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 229940046892 lead acetate Drugs 0.000 description 5
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 4
- KAESVJOAVNADME-UHFFFAOYSA-N Pyrrole Chemical compound C=1C=CNC=1 KAESVJOAVNADME-UHFFFAOYSA-N 0.000 description 4
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 4
- KQNKJJBFUFKYFX-UHFFFAOYSA-N acetic acid;trihydrate Chemical compound O.O.O.CC(O)=O KQNKJJBFUFKYFX-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 238000010191 image analysis Methods 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 229910052759 nickel Inorganic materials 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 4
- 238000002441 X-ray diffraction Methods 0.000 description 3
- 229910052797 bismuth Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- JWQWRXXOKUJARF-UHFFFAOYSA-N oxygen(2-);zirconium(4+);octahydrate Chemical compound O.O.O.O.O.O.O.O.[O-2].[O-2].[Zr+4] JWQWRXXOKUJARF-UHFFFAOYSA-N 0.000 description 3
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- 229910052700 potassium Inorganic materials 0.000 description 3
- 238000005245 sintering Methods 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical compound Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 3
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- BSDOQSMQCZQLDV-UHFFFAOYSA-N butan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] BSDOQSMQCZQLDV-UHFFFAOYSA-N 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- 239000007771 core particle Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- 229910052746 lanthanum Inorganic materials 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 229920000128 polypyrrole Polymers 0.000 description 2
- 239000002243 precursor Substances 0.000 description 2
- 229910052712 strontium Inorganic materials 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- VSFQMZYFJAOOOG-UHFFFAOYSA-N di(propan-2-yloxy)lead Chemical compound CC(C)O[Pb]OC(C)C VSFQMZYFJAOOOG-UHFFFAOYSA-N 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 238000002296 dynamic light scattering Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- 150000004679 hydroxides Chemical class 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- XTUSEBKMEQERQV-UHFFFAOYSA-N propan-2-ol;hydrate Chemical compound O.CC(C)O XTUSEBKMEQERQV-UHFFFAOYSA-N 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
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- 238000003756 stirring Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- LJQSESUEJXAKBR-UHFFFAOYSA-J zirconium(4+) tetrachloride octahydrate Chemical compound O.O.O.O.O.O.O.O.[Cl-].[Cl-].[Cl-].[Cl-].[Zr+4] LJQSESUEJXAKBR-UHFFFAOYSA-J 0.000 description 1
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Abstract
【解決手段】上記課題は、粒子状の鉛系圧電材料であって、メジアン径が1μm未満であり、[算術偏差/平均]で表される粒度分布が15%以下であり、全粒子のうち85%以上が立方体形状を有する鉛系圧電材料によって解決される。
【選択図】図1
Description
本明細書において「ナノ粉体」とは、5〜30nmの範囲内の平均粒子径と、[算術偏差/平均]で表される10%以下の粒度分布と、を有する粒子状の鉛系圧電材料である。つまり、ナノ粉体は、ナノサイズの鉛系圧電材料の粒子(つまりナノ粒子)の集合体である。
ナノ粉体組成物とは、上述の鉛系圧電材料に含まれる元素のうちの少なくとも1種の元素の酸化物及び水酸化物の少なくとも一方を含有する。つまり、鉛系圧電材料がPb,Zr及びTiを含有する場合、ナノ粉体組成物は、上述の粒子の他に、PbO、Pb(OH)2、ZrO2、Zr(OH)4、TiO2及びTi(OH)4からなる群より選択される少なくとも1種の化合物を含有する。
本明細書において、サブミクロン粉体とは、1μm未満のメジアン径と、[算術偏差/平均]で表される15%以下の粒度分布と、粒子状の鉛系圧電材料である。サブミクロン粉体の全粒子のうち85%以上が立方体形状を有する。つまり、サブミクロン粉体は、サブミクロンサイズの鉛系圧電材料の粒子(つまりサブミクロン粒子)の集合体である。
サブミクロン粉体の製造方法は、ナノ粒子を核として、水熱法によって粒成長を行うことを含む。
ここでいう貧溶媒とは原料液の溶質の溶解度が低い状態であり、溶媒種が異なっていてもよく、同種の溶媒であっても温度や圧力などが異なっていても良い
・温度:室温〜200℃、
・圧力:0.01〜2MPa、
・原料液と薄膜流体の流量比(薄膜流体/原料液):0.5〜12000、及び
・薄膜流体を得るための回転数:30〜3500rpm、
の少なくとも1つの条件が満たされることが好ましい。
1−1.核の形成
(実施例1〜10)
酢酸鉛三水和物(関東化学製)及び水酸化カリウム(関東化学製)を含む鉛水溶液;塩化酸化ジルコニウム八水和物(関東化学製)を含むジルコニウム水溶液;塩化チタン水溶液(和光純薬製);水酸化カリウム(関東化学製)を含む水酸化カリウム水溶液を用意した。Pb、Zr及びTiのモル比が、Pb:Zr:Ti=1.1:0.7:0.3となるように、各水溶液を混合することで、原料液Sを得た。
原料溶Sとして、酢酸鉛(関東化学製)を2-メトキシエタノール(関東化学製)に溶解し、テトライソプロポキシド(高純度化学研究所製)とテトラブトキシジルコニウム(高純度科学研究所製)を加え、さらにアセチルアセトン(関東化学製)を加えて十分撹拌したものに水とイソプロピルアルコール(関東化学製)の混合溶媒(水分1.5wt%)を加えたものを準備した。一方、薄膜流体Tとして純水を用いた。
PZT微粒子の原料液Sとして、ジイソプロポキシ鉛(高純度化学研究所製)とテトライソプロポキシド、テトラブトキシジルコニウムをイソプロピルアルコールに溶解し、さらにアセト酢酸エチルを加えた後、水イソプロピルアルコール混合溶媒(水分1.5wt%)を加えたものを準備した。一方、薄膜流体Tとして純水を用いた。
表1に示す条件下で、上述の実施例1〜10と同様の操作によって、スラリーを得た。
(実施例1〜12)
酢酸鉛三水和物(関東化学製)、エチレンジアミン四酢酸(関東化学製)、及び水酸化カリウム(関東化学製)を含む鉛水溶液;塩化酸化ジルコニウム八水和物(関東化学製)を含むジルコニウム水溶液;塩化チタン水溶液(和光純薬製);水酸化カリウム(関東化学製)を含む水酸化カリウム水溶液を、Pb、Zr及びTiのモル比がPb:Zr:Ti=1.1:0.7:0.3となるように混合することで、粒成長プロセスのための原料液S’を調製した。
以上の操作を、実施例1〜12の各スラリーUを用いて行った。
酢酸鉛三水和物(関東化学製)、エチレンジアミン四酢酸(関東化学製)、及び水酸化カリウム(関東化学製)を含む鉛水溶液;塩化酸化ジルコニウム八水和物(関東化学製)を含むジルコニウム水溶液;塩化チタン水溶液(和光純薬製);並びに水酸化カリウム(関東化学製)を含む水酸化カリウム水溶液を、Pb,Zr及びTiのモル比がPb:Zr:Ti=1.1:0.7:0.3となるように混合することで、原料液を調製した。30mlの原料液を、内壁がポリテトラフルオロエチレンであるSUS製の100mlの圧力容器に入れて、165℃、4時間の水熱合成処理を行うことで、PZT粒子を得た。
酢酸鉛三水和物(関東化学製)、エチレンジアミン四酢酸(関東化学製)、及び水酸化カリウム(関東化学製)を含む鉛水溶液;塩化酸化ジルコニウム八水和物(関東化学製)を含むジルコニウム水溶液;塩化チタン水溶液(和光純薬製);並びに水酸化カリウム(関東化学製)を含む水酸化カリウム水溶液を、モル比がPb,Zr及びTiのモル比がPb:Zr:Ti=1.1:0.7:0.3となるように混合した。さらに、ゼラチン(ゼライス製)2.5wt%を加えて、分散機で十分撹拌することで、原料液を調製した。30mlの原料液を、内壁がポリテトラフルオロエチレンであるSUS製の100mlの圧力容器に入れて、165℃、4時間の水熱合成処理を行うことで、PZT粒子を得た。
2−1.核粒子について
上記1−1で得られたスラリーについて、X線回折装置(PANalytical製X‘Pert MPD Pro)により、2θ=20〜60°におけるXRDプロファイルを得た。2θ=20〜60°における全強度に対するPZT相強度比を、PZT合成率として算出した。
粒度分布=近似した正規分布の偏差/近似した正規分布の平均 (1)
成長後のPZT粒子の粒度分布をスペクトリス社製動的散乱式粒度分布測定装置ゼータサイザーナノnano−ZSで測定し、得たデータからメジアン径および粒度分布を求めた。
上記1−2で得られたPZT粒子の配向セラミックスのシードとしての特性を評価するために、PZT粒子の二次元整列処理をおこない、面内の被覆率から粒子の充填程度を評価した。具体的な作製方法は次の通りである。
Claims (7)
- 粒子状の鉛系圧電材料であって、
平均粒子径が5〜30nmの範囲内であり、
[算術偏差/平均]で表される粒度分布が10%以下である、
鉛系圧電材料。 - 鉛と酸素以外に2種以上の元素を含有する、
鉛系圧電材料。 - 請求項1又は2に記載の鉛系圧電材料と、
前記鉛系圧電材料に含まれる元素のうちの少なくとも1種の元素の酸化物及び水酸化物の少なくとも一方と、
を含有する圧電材料組成物。 - 粒子状の鉛系圧電材料であって、
メジアン径が1μm未満であり、
[算術偏差/平均]で表される粒度分布が15%以下であり、
全粒子のうち85%以上が立方体形状を有する、
鉛系圧電材料。 - 鉛と酸素以外に2種以上の元素を含有する、
請求項4に記載の鉛系圧電材料。 - 請求項4に記載の鉛系圧電材料の製造方法であって、
ナノ粒子を核として水熱法によって粒子を成長させることを備える、
製造方法。 - 請求項1又は2に記載の鉛系圧電材料を前記核として用いる、
請求項6に記載の製造方法。
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EP2447234A2 (en) | 2012-05-02 |
EP2447234A3 (en) | 2012-08-01 |
US8721913B2 (en) | 2014-05-13 |
JP5575609B2 (ja) | 2014-08-20 |
CN102531594A (zh) | 2012-07-04 |
US20120104309A1 (en) | 2012-05-03 |
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