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Surface treatment method for improving performance of piezoelectric ceramic

A piezoelectric ceramic and surface treatment technology, applied in the field of surface treatment to improve the performance of piezoelectric ceramics, can solve the problems of high and low temperature resistance and moisture resistance, salt spray corrosion resistance on the surface of piezoelectric ceramics, affecting the service life of piezoelectric ceramic components, etc. , to achieve the effect of improving resistance to salt spray corrosion and prolonging aging life

Active Publication Date: 2015-09-02
GUIZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The research found that the reason for this rapid deterioration phenomenon is that there are holes on the surface of piezoelectric ceramics, which causes the corrosion resistance, high and low temperature resistance and moisture resistance of the piezoelectric ceramic surface to decline, thus affecting the service life of piezoelectric ceramic components

Method used

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  • Surface treatment method for improving performance of piezoelectric ceramic

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: improve the surface treatment method of piezoelectric ceramic performance, comprise the steps:

[0029] ①Providing a piezoelectric ceramic body;

[0030] ② Prepare Ca(OH) with a concentration of 0.1g / L respectively 2 solution, a boric acid solution with a concentration of 0.2g / L and a calcium dihydrogen phosphate solution with a concentration of 1g / L, the boric acid solution and the calcium dihydrogen phosphate solution are mixed in a weight ratio of 1:1 to obtain boric acid and dihydrogen phosphate Calcium mixed solution, spare;

[0031] ③Immerse the piezoelectric ceramic body in Ca(OH) 2 In the solution for 5 seconds, product A is obtained;

[0032] ④Take out product A, heat and dry at 100°C for 30 minutes to obtain product B;

[0033] ⑤Soak product B in the mixed solution of boric acid and calcium dihydrogen phosphate for 5 seconds to obtain product C;

[0034] ⑥Take out product C, firstly dry it at 100°C for 30 minutes, and then keep it at 700-750...

Embodiment 2

[0035] Embodiment 2: improve the surface treatment method of piezoelectric ceramic performance, comprise the steps:

[0036] ①Providing a piezoelectric ceramic body;

[0037] ② Prepare Ca(OH) with a concentration of 0.15g / L respectively 2 solution, a boric acid solution with a concentration of 1g / L and a calcium dihydrogen phosphate solution with a concentration of 0.2g / L, the boric acid solution and the calcium dihydrogen phosphate solution are mixed in a weight ratio of 1:1 to obtain boric acid and dihydrogen phosphate Calcium mixed solution, spare;

[0038] ③Immerse the piezoelectric ceramic body in Ca(OH) 2 In the solution for 5 minutes, product A was obtained;

[0039] ④Take out product A, heat and dry at 150°C for 8 minutes to obtain product B;

[0040] ⑤ Soak product B in a mixed solution of boric acid and calcium dihydrogen phosphate for 5 minutes to obtain product C;

[0041] ⑥Take out product C, firstly dry it at 150°C for 8 minutes, and then keep it at 950-1000...

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Abstract

The invention discloses a surface treatment method for improving the performance of piezoelectric ceramic. The method comprises the following steps: (1) providing a piezoelectric ceramic body; (2) configuring a Ca(OH)2 solution and a mixed solution of boric acid and monocalcium phosphate for later use; (3) soaking the piezoelectric ceramic body into the Ca(OH)2 solution to obtain a product A; (4) taking the product A out, and heating and drying the product A to obtain a product B; (5) soaking the product B into the mixed solution of boric acid and monocalcium phosphate to obtain a product C; and (6) taking the product C out, drying the product C at first, and then performing heat treatment to generate a boron phosphate calcium glass film on the surface of the piezoelectric ceramic to obtain a finished product. By adopting the technical scheme, the surface treatment method provided by the invention has the advantages that the salt-spray corrosion resistance, high-low temperature resistance and moisture resistant performance of the surface of the piezoelectric ceramic are improved, and the aging service life of the piezoelectric ceramic is obviously prolonged.

Description

technical field [0001] The invention relates to a treatment method for ceramic surfaces, in particular to a surface treatment method for improving the performance of piezoelectric ceramics. Background technique [0002] Piezoelectric ceramics are information functional ceramic materials that can convert mechanical energy and electrical energy into each other. Piezoelectric ceramics are made by using their materials under the action of mechanical stress to cause the relative displacement of the internal positive and negative charge centers to cause polarization, resulting in the appearance of bound charges with opposite signs on the surface of the material, that is, the piezoelectric effect. It has sensitive characteristics. Ceramics are mainly used in the manufacture of ultrasonic transducers, underwater acoustic transducers, electroacoustic transducers, ceramic filters, ceramic transformers, ceramic discriminators, high voltage generators, infrared detectors, surface acoust...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B41/85
Inventor 庞驰郑德一周芳
Owner GUIZHOU UNIV
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