SU785269A1 - Charge for producing high-frequency thermobalancing capacitors - Google Patents

Description

(54) CHIPS FOR MAKING HIGH-FREQUENCY THERMO-COMPENSATING CONDENSERS {The invention relates to radio-electronic equipment and can be used in the production of high-frequency ceramic materials in the TKN M750 group with an increased specific capacity for making different types of chimes using a comb- ershaft body, i'm not using i'm, I’m not using i'm, I’m not using i'm, I’m not using i'm, I’m not using i'm, I’m not using i'm, I’m using i'm, I’m not using ios. Ceramic materials based on solid solutions of La CaTi Oj Ij are widely used as well as high voltages. A known charge for making high frequencies; thermocompensating capacitors t2j, containing, wt%: 19.0-19.2 BaO 16.6-37.5 Ndapj 39.5-39.7 TiPa 4.0-24.5 Laapj However, it is impossible to obtain from the total material dielectric material for high-frequency capacitors with a higher dielectric value and low loss.

p5 | 5; i. . .

 asaSu.ia The closest technical solution to the proposed is a ceramic material for the manufacture of thermo-compensating high-frequency capacitors 3} containing mol.%: BaTiO 77 1ааР 2Т-; О25 Srl-iOj18 This material has a very high dielectric constant the value of the temperature coefficient ({) is the dielectric constant and high dielectric losses. TD of the invention is the reduction of dielectric losses and the provision of the temperature coefficient of dielectric permeability in the range (65O-82O) "1O degrees T. The goal is achieved by the fact that the charge for the manufacture of high-frequency thermocompensating capacitors containing St-Ti Ol, BaCOj, T | O | d,

Yd Oj, contains components in the following ratio, wt.%:

SrTiOj 1-10,0

 (in terms of 11.4-18.5 to 36.7-39.6

TfQ ,,

"AS 40.9-41.9

As a result of high temperature

synthesis, the proposed mixture acquires the properties of a high-frequency capacitor. ceramic material ..

The material is obtained as follows. Lanthanum oxide, barium carbonate at the rate of 10–18% BaO, titanium dioxide, and strontium titanate are weighed out preliminarily calcined at 110 ° –12OO C and placed at the agate crust where, together with distilled water, they are mixed for 2 hours. This mixture is dried, and the pot is shaped according to GOST: 5458-75 / Radio ceramic materials, after which their electrical

specifications. Moreover, the obtained high-frequency ceramic material can be used to prepare capacitor billets by any method adopted in ceramic technology.

The specific composition of the mixture obtained material in comparison with the prototype are given in table. 1, and their properties in table. 2

Table 1

table 2

Dia 120-122 123-125. permeability

The tangent of dielectric loss angle 2-3

Temperature coefficient of dielectric constant of TKE 10 degrees

- (786-820) - {650-736) - (724-785) - (100-70OO)

The use of the proposed material leads to an increase in the specific capacitance of high-frequency capacitors at small values of dielectric losses and thus saves precious metals (for example, silver).

FORUMUA AND 3 ABOUT AND

The mixture for the manufacture of high frequency. shh thermocompensating capacitors, including SrTJO, BaCOjj Ti 0,2. and

17

2-3

2-3

i.aaOj, characterized in that, in order to reduce dielectric loss and provide a temperature 50 dielectric constant in the interval (650-820) 1 Otrad, it contains components in the following ratio, wt.%

1.0-10.0

svno

five

.BaCOj (B recalculated

on BaO) 11, 4-18,5 36,7-39,6. 40.9-41.9

Na.0z 126-129 1OO-14OO

5 7852696

Sources of information, 2. USSR author's certificate

taking into account in the examination number 628133, cl. From 04 to 35/00,

1. Buanikov P. P. et al. Chem. 1977, technologists of ceramics and refractories. /AND.,

iad-in 3, US Patent hfe 3440О67,

1972, p. 335.kl. 106-39, 1969.

Claims (1)

Form Street A Ieob Retennya A mixture for the manufacture of high-frequency thermocompensating capacitors, including SrTiO ^, BaCOjj Ti 0, _X and .La ^ Oj |, characterized in that, in order to reduce dielectric losses and provide a temperature 50 coefficient of dielectric constant in the range (650-820) · KZrad, it contains components in the following ratio, wt.% 1.0-10.0 • BaCO, (in terms of BaO) · 11.4-18.5 THERE. 36.7-39.6 La _x O ₅ 40.9-41.9