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    METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC COMPOSITION, METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC ELEMENT, METHOD FOR PRODUCING ULTRASONIC PROBE AND METHOD FOR PRODUCING IMAGING DIAGNOSTIC DEVICE

    New search for: MINEMOTO TAKASHI
    New search for: WADA TOMOSHI

    PROBLEM TO BE SOLVED: To provide a lead-free piezoelectric composition and a lead-free piezoelectric element having a high piezoelectric constant by a simple process.SOLUTION: Provided is a method for producing a lead-free piezoelectric composition having a perovskite structure represented by general compositional formula ABOand further having a specified elemental composition. The production method comprises a raw material preparation step, a first temperature rising step, a first heat treatment step, a first cooling step, a second heat treatment step and a second cooling step in this order, and the cooling velocity in the secondary cooling step is 0.01 to 200°C/second. Also provided are production methods for a lead-free piezoelectric element, an ultrasonic probe and an imaging diagnostic apparatus substantially including the production method for the lead-free piezoelectric composition.SELECTED DRAWING: None

    【課題】大きな圧電定数を有する非鉛圧電組成物及び非鉛圧電素子を簡便なプロセスで再現性よく提供する。【解決手段】本発明は、一般組成式ＡＢＯ３で表されるペロブスカイト構造を有するとともに特定の元素組成を有する非鉛圧電組成物の製造方法である。この製造方法は、原料準備工程、第１昇温工程、第１熱処理工程、第１冷却工程、第２熱処理工程、および、第２冷却工程、をこの順番で含み、上記第２冷却工程の冷却速度が０．０１〜２００℃／秒である。また、本発明は、上記の非鉛圧電組成物の製造方法を実質的に含む、非鉛圧電素子、超音波プローブおよび画像診断装置の製造方法をそれぞれ提供する。【選択図】なし

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    METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC COMPOSITION, METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC ELEMENT, METHOD FOR PRODUCING ULTRASONIC PROBE AND METHOD FOR PRODUCING IMAGING DIAGNOSTIC DEVICE

    New search for: MINEMOTO TAKASHI
    New search for: WADA TOMOSHI

    PROBLEM TO BE SOLVED: To provide a lead-free piezoelectric composition and a lead-free piezoelectric element having a high piezoelectric constant by a simple process.SOLUTION: Provided is a method for producing a lead-free piezoelectric composition having a perovskite structure represented by general compositional formula ABOand further having a specified elemental composition. The production method comprises a raw material preparation step, a first temperature rising step, a first heat treatment step, a first cooling step, a second heat treatment step and a second cooling step in this order, and the cooling velocity in the secondary cooling step is 0.01 to 200°C/second. Also provided are production methods for a lead-free piezoelectric element, an ultrasonic probe and an imaging diagnostic apparatus substantially including the production method for the lead-free piezoelectric composition.SELECTED DRAWING: None

    【課題】大きな圧電定数を有する非鉛圧電組成物及び非鉛圧電素子を簡便なプロセスで再現性よく提供する。【解決手段】本発明は、一般組成式ＡＢＯ３で表されるペロブスカイト構造を有するとともに特定の元素組成を有する非鉛圧電組成物の製造方法である。この製造方法は、原料準備工程、第１昇温工程、第１熱処理工程、第１冷却工程、第２熱処理工程、および、第２冷却工程、をこの順番で含み、上記第２冷却工程の冷却速度が０．０１〜２００℃／秒である。また、本発明は、上記の非鉛圧電組成物の製造方法を実質的に含む、非鉛圧電素子、超音波プローブおよび画像診断装置の製造方法をそれぞれ提供する。【選択図】なし

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    METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC COMPOSITION, METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC ELEMENT, METHOD FOR PRODUCING ULTRASONIC PROBE AND METHOD FOR PRODUCING IMAGING DIAGNOSTIC DEVICE

    New search for: MINEMOTO TAKASHI
    New search for: WADA TOMOSHI

    PROBLEM TO BE SOLVED: To provide a lead-free piezoelectric composition and a lead-free piezoelectric element having a high piezoelectric constant by a simple process.SOLUTION: Provided is a method for producing a lead-free piezoelectric composition having a perovskite structure represented by general compositional formula ABOand further having a specified elemental composition. The production method comprises a raw material preparation step, a first temperature rising step, a first heat treatment step, a first cooling step, a second heat treatment step and a second cooling step in this order, and the cooling velocity in the secondary cooling step is 0.01 to 200°C/second. Also provided are production methods for a lead-free piezoelectric element, an ultrasonic probe and an imaging diagnostic apparatus substantially including the production method for the lead-free piezoelectric composition.SELECTED DRAWING: None

    【課題】大きな圧電定数を有する非鉛圧電組成物及び非鉛圧電素子を簡便なプロセスで再現性よく提供する。【解決手段】本発明は、一般組成式ＡＢＯ３で表されるペロブスカイト構造を有するとともに特定の元素組成を有する非鉛圧電組成物の製造方法である。この製造方法は、原料準備工程、第１昇温工程、第１熱処理工程、第１冷却工程、第２熱処理工程、および、第２冷却工程、をこの順番で含み、上記第２冷却工程の冷却速度が０．０１〜２００℃／秒である。また、本発明は、上記の非鉛圧電組成物の製造方法を実質的に含む、非鉛圧電素子、超音波プローブおよび画像診断装置の製造方法をそれぞれ提供する。【選択図】なし

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    Title:

    METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC COMPOSITION, METHOD FOR PRODUCING LEAD-FREE PIEZOELECTRIC ELEMENT, METHOD FOR PRODUCING ULTRASONIC PROBE AND METHOD FOR PRODUCING IMAGING DIAGNOSTIC DEVICE

    Additional title:

    非鉛圧電組成物の製造方法、非鉛圧電素子の製造方法、超音波プローブの製造方法及び画像診断装置の製造方法

    Contributors:

    MINEMOTO TAKASHI (author) / WADA TOMOSHI (author)

    Publication date:

    2017-10-05

    Type of media:

    Patent

    Type of material:

    Electronic Resource

    Language:

    Japanese

    Classification:

    IPC:  C04B Kalk , LIME / A61B DIAGNOSIS , Diagnostik / H04R LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS , Lautsprecher, Mikrofone, Schallplatten-Tonabnehmer oder ähnliche akustische, elektromechanische Wandler / H10N

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