Piezoelectric ceramic material for underwater acoustic transducer and preparation method thereof

A technology of underwater acoustic transducer and piezoelectric ceramics, applied in the direction of material selection for piezoelectric devices or electrostrictive devices, device material selection, manufacturing/assembly of piezoelectric/electrostrictive devices, etc., can solve the problem. High-power underwater acoustic transducer devices cannot be widely used to achieve the effect of improving mechanical quality factor, improving loss performance, and reducing dielectric loss

Inactive Publication Date: 2017-10-03
HUAZHONG UNIV OF SCI & TECH
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  • Abstract
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  • Claims
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Problems solved by technology

[0006] In view of the defects of the prior art, the purpose of the present invention is to solve the technical problems that existing high-power piezoelectric ceramic materials have shortcomings in piezoelectric performance or loss performance, and cannot be widely used in the fields of high-power underwater acoustic transducers and the like.

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  • Piezoelectric ceramic material for underwater acoustic transducer and preparation method thereof
  • Piezoelectric ceramic material for underwater acoustic transducer and preparation method thereof
  • Piezoelectric ceramic material for underwater acoustic transducer and preparation method thereof

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[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] In the embodiment of the present invention, with general chemical formula: Pb 0.98 Sr 0.02 (Mn 1 / 3 Sb 2 / 3 ) 0.08 Zr 0.47 Ti 0.45 o 3 +xwt%CeO 2 +ywt%Yb 2 o 3 +zwt%BiFeO 3 Indicates the composition of the piezoelectric ceramic material, where Pb 0.98 Sr 0.02 (Mn 1 / 3 Sb 2 / 3 ) 0.08 Zr 0.47 Ti 0.45 o 3 Represents the matrix powder of ceramics, xwt% represents CeO 2 (Cerium oxide) accounts for the weight percentage of the matrix ceramic powder, ywt% means Yb 2 o 3 (Ytterbium oxide) accounts for the weight percentage of the base ceramic powder, zwt% means BiFeO 3 (bismuth fer...

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Abstract

The invention discloses a piezoelectric ceramic material for an underwater acoustic transducer and a preparation method thereof. The chemical general formula of the piezoelectric ceramic material is Pb0.98Sr0.02(Mn1 / 3Sb2 / 3)0.08Zr0.47Ti0.45O3+xwt%CeO2+ywt%Yb2O3+zwt%BiFeO3, and in the formula, Pb0.98Sr0.02(Mn1 / 3Sb2 / 3)0.08Zr0.47Ti0.45O3 is base ceramic powder, xwt% represents the weight percentage of CeO2 in the base ceramic powder, ywt% represents the weight percentage of Yb2O3 in the base ceramic powder and zwt% represents the weight percentage of BiFeO3 in the base ceramic powder. The piezoelectric ceramic material has a piezoelectric constant greater than or equal to 300p C / N, an electromechanical coupling factor greater than or equal to 0.56, the minimum dielectric loss of 2.74% in a strong alternating electric field of 5 kV / cm and a mechanical quality factor greater than or equal to 1301. The piezoelectric ceramic material has piezoelectric properties and loss properties satisfying high power underwater acoustic transducer demands and has a wide application prospect.

Description

technical field [0001] The invention belongs to the field of novel inorganic non-metallic materials, and more specifically relates to a piezoelectric ceramic material applied to an underwater acoustic transducer and a preparation method thereof. Background technique [0002] In modern technology, materials used as high-power underwater acoustic transducers are mainly used in piezoelectric transducers. Piezoelectric transducers are transducers manufactured using the forward and reverse piezoelectric effects of piezoelectric materials. They are widely used in Critical components such as military satellites, missiles, aircraft, ships, radars, and military robots. In practical applications, the application of piezoelectric high-power underwater acoustic transducers dominates, and high-power piezoelectric transducer materials are mainly piezoelectric ceramics. [0003] For piezoelectric ceramic materials for emitting transducers, the requirements of high power and high efficienc...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/491C04B35/622C04B41/88H01L41/18H01L41/187H01L41/37H01L41/39H01L41/43
CPCC04B35/491C04B35/622C04B41/5116C04B41/88C04B2235/656C04B2235/768C04B2235/3298C04B2235/3262C04B2235/3274C04B2235/3294C04B2235/3225C04B2235/3224C04B2235/3213H10N30/8536H10N30/852H10N30/8554H10N30/092H10N30/097C04B41/4539C04B41/0072
Inventor 范桂芬吴秋晨吕文中王晓川雷文曾子庆
Owner HUAZHONG UNIV OF SCI & TECH
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