This standard specifies the test methods for the time aging and temperature aging performance of piezoelectric ceramic materials. This standard is applicable to the time aging and temperature aging performance test of piezoelectric ceramic materials. GB/T 15750-1995 Piezoelectric ceramic material aging performance test procedures GB/T15750-1995 Standard download decompression password: www.bzxz.net

GB/T15750-1995
Additional Notes:
This standard was proposed by China State Shipbuilding Corporation. This standard was drafted by the State-owned 721st Factory, and participated by 715th Institute, 726th Institute, 999th Factory, 799th Factory, Shandong Zibo Radio Porcelain Components Factory and other units. The main drafters of this standard are Luo Shaoye, Gao Mingxian, and Tian Dehui. 3
WICS.29.040.20
National Standard of the People's Republic of China
GB/T 15750—1995
Test program for the ageing propertiesof piezoelectric ceramics
1995-11-20 Issued
State Administration of Technical Supervision
1996-08-01 Implementation
WNational Standard of the People's Republic of China
Test program for the ageing propertiesof plezoelectric ceranies
Subject content and scope of application
This standard specifies the test method for the time aging and temperature aging properties of piezoelectric ceramic materials. This standard is applicable to the test of the time aging and temperature aging properties of piezoelectric ceramic materials. 2 Reference standards
GB/T15750—1995
GB2414. Test methods for piezoelectric ceramic materials Radial expansion and contraction vibration of discs, transverse expansion and contraction vibration of strips GB 3389-1
GB 3389, 4
GB33896
Test methods for piezoelectric ceramic materials
Common terms
Test methods for piezoelectric ceramic materials
Test methods for piezoelectric ceramic materials
Test methods for piezoelectric ceramic materials
Test methods for piezoelectric ceramic materials
Pillar longitudinal length expansion and contraction vibration mode
Disc thickness expansion and contraction perturbation mode
Rectangular thickness shear vibration mode
Test methods for frequency and temperature stability of piezoelectric ceramic oscillators GB 6427
CB11310 Test Method for Performance of Piezoelectric Ceramic Materials Test of Relative Free Dielectric Constant Temperature Characteristics 3 Terms and Symbols
3.1 The terms and symbols used in this standard shall comply with the provisions of GB3389.1 3.2 Temperature aging properties (aging Properties of temperature) refer to the characteristics of the parameters changing with the aging temperature and aging time (or the number of cycles) after temperature treatment to improve the performance stability of piezoelectric ceramic materials. The temperature aging properties can be expressed by the temperature aging rate B.
Where, B-
temperature aging rate,
the value of a parameter measured before temperature treatment; X-the value of a parameter measured after temperature treatment. 4 Test methods
4.1 Test conditions
4.1.1 Normal atmospheric conditions
Temperature: 15~35℃
Relative humidity: 45%~80%;
Atmospheric pressure. 86~10GkPa
Approved by the State Administration of Technical Supervision on November 20, 1995 and implemented on August 1, 1996
W. GB/T 15750--1995
4.1.2 Test environment conditions
For the same group of products, in each test during the entire test process, the environmental conditions must be maintained within the normal atmospheric conditions range, and the temperature difference should not exceed ±2℃.
4.2 Test methods
4.2.1 The parameter performance of the radial stretching vibration mode is tested using GB 2414. 4.2.2 The parameter performance of the transverse length telescopic motion mode is tested using CB2414. 4.2.3 The parameter performance of the longitudinal length contraction motion mode is tested using GB 3389.4. 4.2.4 The parameter performance of the thickness telescopic motion mode is tested using GB 33B9.5, and 4.2.5 The parameter performance of the thickness shear motion mode is tested using GB 33BB.6. 4.2.6 The stability of the polarization rate is tested in accordance with GB 6427, and the relative free dielectric constant is tested in accordance with GB 11310. 4.3 Test procedures and result calculation
4.3.1 Time aging performance
The time aging performance is characterized by a 10-fold time aging rate and the test method in 4.2 of this standard is used; at least three tests are conducted after polarization, the first test at 7 to 14 days, the second test at about 30 days, and the third test at about 100 days. The data of these three tests are all plotted as a logarithmic curve of time relative to the number of days after polarization. The values ​​of 10 days and 100 days should be determined by the best straight line by the implantation method. From 10 to 100 days, the 10-fold time aging rate A is calculated using the formula or (2). :XU)u = Ala element
I: A-
The slope of the logarithmic curve is usually called 10 times the time aging rate, (t)
Y(e>-the value of the parameter measured after the polarization time. 4.3.2 Intensity aging performance
4.3.2.1 Initial measurement
According to different density materials, after polarization, the natural storage time is a certain time, and the parameter performance X is tested according to the test method of 4.2. 4.3.2. 2. Polarization treatment
Put the sample in the state of electrical short circuit into the high temperature box, adjust the temperature to the required temperature, and the heating rate should not exceed 100℃/h. After keeping warm for a while, turn off the electric stimulation, and take out the sample after cooling naturally to the temperature. The sample should be placed in the temperature box to facilitate thermal balance and should not be exposed to high temperature radiation. 4.3.2.3 Post-measurement
The sample should be restored for a certain period of time under room temperature conditions. According to the test method of 4.2, the test parameter X should be tested. 4.3.2.4 Calculation of polarization aging rate
Calculate the temperature aging rate B according to formula (1).
Because the temperature aging rate B is related to the temperature treatment conditions, when the product technical case specifies the polarization aging rate B, it should also specify: a.
Aging conditions, aging temperature, and holding time; storage time after polarization:
Recovery time after temperature treatment.bZxz.net
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