SU1060586A1 - Glaze - Google Patents

Abstract

GLAZE, inclusive .SiOj. , in О, 2rO2 / VjOj and CuO, characterized in that, in order to reduce the temperature coefficient of linear expansion, it contains these components in the following amounts, wt.%: SiOj 12.5-14.5 37.0-40, 0 25.0-27.5 ZrtO 6.5- 7.0 ZrOj 4.0-11.0 ViOj 5.0-10.0 CUO

Description

ate

00 O5

The invention relates to the technology of silicates and can be used in the electronic, radio engineering, communications industry for the glazing of special ceramics with a low thermal expansion coefficient.

Known glaze 13, including wt.%:

SiOg

.69,30-77,09

5.65-7.39

0.25-0.30

CaO 1.69-2.34

Mgd 1.08-1.51

K2O 1.93-3.96

4.31-6.19

ZnO 3.93-8.09

ZnO2 2.17-3.40

The disadvantage of this composition is the high calcination temperature.

The closest to the one proposed is the G2J glaze, comprising, ae.%;

S iO2

5.5-14.5

B 20 ,, 28,0-42,0

32.5-42.5

4.5-5.5 3-7.5 2.5-4 3.0-5.0

This glaze has a temperature Q linear coefficient of expansion in the range of 42.6-45.2 degrees.

The purpose of the invention is to reduce the linear expansion tag coefficient.

The goal is achieved by the fact that the glaze, including 510, 2πO, ZrO, VjOg and Coo, contains the indicated components in the following amounts, wt%:

SiO,

12.5-14.5 V20e 37.0-40.0 2pO 25.0-27.5 2gO6, 5-7.0

ys 4.0-11.0 sio 5.0-10.0 The specific composition of the proposed azure is given in table, the properties of the compositions in table 2.

  1 i.

Cooking temperature, ° С

1300 1300

500 490 640 640

700 700

Temperature coefficient of linear tertary racial-shreni, оС- 10- deg-1

1300-1350

1300

500 640 700

42.6

39.6

I1060586L

Glasses of vardents in corundum tig-Schlicker were applied to samples and burned in electric furnaces. It is boiled in an electric furnace with aging glasses granulated by pouring — at the maximum temperature during the glass melt into cold water. After 15 minutes, the samples are cooled together by drying granulated granules with a furnace.

Sieve and sieve through sieve No. 80. 5 The use of the proposed sigher and sikker is made from totav will allow to increase the strength

calculation, wt.%: glass 60, water 40. characteristics of special ceramics.

Claims (1)

GLAZE, including Si0 ₂ B ^ Oj, XnO, Z'rO ₂ , ^{and Cu} °, is distinguished by the fact that, in order to reduce the temperature coefficient of linear expansion, it contains these components in the following amounts , wt.%: Slo ₂ 12.5-14.5 ^At 2 ° Oe 37.0-40.0 Zno 25.0-27.5 ZrO ₂ 6.5-7.0 4.0-11.0 Cool 5.0-10.0