A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
PIEZOELECTRIC COMPOSITION, PIEZOELECTRIC ELEMENT, MANUFACTURING METHOD OF THE SAME, AND ULTRASONIC PROBE
PROBLEM TO BE SOLVED: To provide a non-lead piezoelectric composition capable of stably exerting sufficient piezoelectric characteristics after polarization processing even for a system containing bismuth ferrate and a non-lead piezoelectric element.SOLUTION: The piezoelectric composition is a ternary system piezoelectric composition of BKT-BT-BFO. When molar ratios of BKT, BT, and BFO are denoted as x, y, and z, respectively, a component represented by a region surrounded by four points A to D represented by coordinates (x, y, z) in a three-phase diagram and not containing a part respectively overlapping with a line segment AD, a line segment BC, a line segment CG, and a line segment HI is contained as a main component.SELECTED DRAWING: Figure 1
【課題】鉄酸ビスマスを含む系であっても分極処理後に十分な圧電特性を安定して発現可能な非鉛圧電組成物および非鉛圧電素子を提供する。【解決手段】ＢＫＴ−ＢＴ−ＢＦＯの三元系圧電組成物であり、ＢＫＴ、ＢＴおよびＢＦＯのモル比をｘ、ｙおよびｚとしたときの、三角相図における座標（ｘ，ｙ，ｚ）で表される四点Ａ〜Ｄで囲まれるが、線分ＡＤ、線分ＢＣ、線分ＣＧおよび線分ＨＩのそれぞれと重複する部分を含まない領域で表される成分を主成分として含有する。【選択図】図１
PIEZOELECTRIC COMPOSITION, PIEZOELECTRIC ELEMENT, MANUFACTURING METHOD OF THE SAME, AND ULTRASONIC PROBE
PROBLEM TO BE SOLVED: To provide a non-lead piezoelectric composition capable of stably exerting sufficient piezoelectric characteristics after polarization processing even for a system containing bismuth ferrate and a non-lead piezoelectric element.SOLUTION: The piezoelectric composition is a ternary system piezoelectric composition of BKT-BT-BFO. When molar ratios of BKT, BT, and BFO are denoted as x, y, and z, respectively, a component represented by a region surrounded by four points A to D represented by coordinates (x, y, z) in a three-phase diagram and not containing a part respectively overlapping with a line segment AD, a line segment BC, a line segment CG, and a line segment HI is contained as a main component.SELECTED DRAWING: Figure 1
【課題】鉄酸ビスマスを含む系であっても分極処理後に十分な圧電特性を安定して発現可能な非鉛圧電組成物および非鉛圧電素子を提供する。【解決手段】ＢＫＴ−ＢＴ−ＢＦＯの三元系圧電組成物であり、ＢＫＴ、ＢＴおよびＢＦＯのモル比をｘ、ｙおよびｚとしたときの、三角相図における座標（ｘ，ｙ，ｚ）で表される四点Ａ〜Ｄで囲まれるが、線分ＡＤ、線分ＢＣ、線分ＣＧおよび線分ＨＩのそれぞれと重複する部分を含まない領域で表される成分を主成分として含有する。【選択図】図１
PIEZOELECTRIC COMPOSITION, PIEZOELECTRIC ELEMENT, MANUFACTURING METHOD OF THE SAME, AND ULTRASONIC PROBE
圧電組成物、圧電素子およびその製造方法ならびに超音波探触子
MINEMOTO TAKASHI (author) / KATO JUNICHI (author)
2016-09-05
Patent
Electronic Resource
Japanese
| European Patent Office | 2016
| European Patent Office | 2022
| European Patent Office | 2024
European Patent Office | 2024