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Non-pressure infiltration preparation process of functionally graded piezoelectric material (FGPM)
The invention provides a non-pressure infiltration preparation process of a functionally graded piezoelectric material (FGPM). The process comprises the following steps: (1) raw material preparation; (2) prefabricated body forming, wherein a blank with the voidage continuously changing in the thickness direction within 35%-40% is obtained, and a layer of Fe powder of the particle size of 7 micrometers is laid on the prefabricated body; (3) sintering, wherein liquid Fe in each layer of mixed powder of a high Fe content is made to infiltrate into air voids in a lower layer of the prefabricated body, so that an interface gradient is formed; (4) FGPM densification; (5) polishing, wherein a prepared FGPM block is ground and polished, and finally the Fe/PZT-5 FGPM with material components continuously changing is obtained through preparation. The prefabricated body with the voidage continuously changing can be prepared by controlling the content of a binding agent and enhancing the change of the body particle diameter, and the ideal FGPM block with the components continuously changing can be obtained under the condition of sufficient layers.
Non-pressure infiltration preparation process of functionally graded piezoelectric material (FGPM)
The invention provides a non-pressure infiltration preparation process of a functionally graded piezoelectric material (FGPM). The process comprises the following steps: (1) raw material preparation; (2) prefabricated body forming, wherein a blank with the voidage continuously changing in the thickness direction within 35%-40% is obtained, and a layer of Fe powder of the particle size of 7 micrometers is laid on the prefabricated body; (3) sintering, wherein liquid Fe in each layer of mixed powder of a high Fe content is made to infiltrate into air voids in a lower layer of the prefabricated body, so that an interface gradient is formed; (4) FGPM densification; (5) polishing, wherein a prepared FGPM block is ground and polished, and finally the Fe/PZT-5 FGPM with material components continuously changing is obtained through preparation. The prefabricated body with the voidage continuously changing can be prepared by controlling the content of a binding agent and enhancing the change of the body particle diameter, and the ideal FGPM block with the components continuously changing can be obtained under the condition of sufficient layers.
Non-pressure infiltration preparation process of functionally graded piezoelectric material (FGPM)
ZHANG XIAOMING (author) / YU JIANGONG (author) / YANG XIAODONG (author) / HAN HUALI (author) / WANG XIANHUI (author)
2015-04-22
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
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