SU985009A1 - Method of producing piezoelectric ceramics - Google Patents

Description

Lead free of organic binding agents is placed in a sealed, elastic form of thin rubber and then subjected to cold isostatic pressing. The resulting semi-finished product, having dimensions 040X160. mm is cut into 16 mm discs, which are then sintered, electrodes are applied and polarized.

In tab. Figure 1 summarizes the results of the study of the electrophysical and mechanical properties of the CTBS-3 piezoceramics.

Table 1

2

Piezomodul d. 10, c / n

150

3t

Tangent of dielectric loss angle, 16 fo-10

Maximum tensile strength; 6p, kg / cm

Grain size, d, micron

Relative density

R,%

From tab. As can be seen from Fig. 1, as the pressure rises to 4000 atm, the electrophysical and mechanical properties of piezoceramics increase. An increase in pressure from 4,000 to 5,000 atm does not lead to an increase in electrical and mechanical properties. A further increase in pressure to 6,000 atm does not allow for the polarization of the sintered sample.

PZTBS-3 piezoceramics Piezomodul, d ,,, to / and Tangent of dielectric loss angle, Maximum tensile strength, y, kg / cm 190 Piezoke

Power module, d3vlO r c / n

The tangent of dielectric loss angle, 10

× 170

Samples are destroyed during polarization

0,69

400 2.2

99

In tab. 2 shows the comparative results of studies of the electrophysical and mechanical properties of piezoceramics CTBS-3, PZT-19 and PZT-23, made into a semi-finished product with uniaxial pressing of a piezomass powder containing WWS and isostatic pressing at pressures of 3600, 4000 and 5000 atm.

Tablida2

105

115

120

2.5

2.1

2.0 0.73 0.69 240 320 400 TS-19

Pyeom u1ul,, 10, to / and

The tangent of the dielectric loss head, 4.68- 10

Maximum tensile strength, Gp ,. kg / cm2. Thus, the use of the proposed method for producing piezoceramics compared to the known method provides an improvement in the electrophysical and mechanical properties of piezoceramics.

Claims (2)

1. Glozman A. Piezoceramics. M., Energie, 1972, p. 233-265. 2. Forward Germany No. 2311232, published. 1974.