WO2002008142A1 - High frequency ceramic material - Google Patents

Abstract

The invention relates to ceramic materials based on titanium dioxides and can be used for producing multilayer high frequency thermostable ceramic condensers provided with electrodes based on an alloy which comprises Ag and Pd, and also for producing microwave filters. The aim of the invention is to develop the high frequency ceramic material with a low sintering temperature Tsin = 1080 - 1120 °C for silver-vanadium electrodes with a silver content of not less than 70 %. In a first embodiment, the high frequency ceramic material comprises the following components, expressed in mass % : zinc oxide between 16.0 and 23.9 ; niobium oxide between 47.4 and 75.9; titanium oxide having a rutile structure ranging from 0.9 to 35.9. In the second embodiment, a (Znx Nby Tiz)O2 composition oxide, where generally, X is equal to 0.17, Y is equal to 0.332, Z is equal to 0.5, is used in the high frequency ceramic material as the titanium oxide having the rutile structure. In addition, a zinc niobate ZnNb2O6 is added to said ceramic material so that it has the following component ratio expressed in mass % : the (Znx Nby Tiz)O2 composition oxide ranging from 2 to 8 and the zinc niobate ZnNb2O6 ranging from 20 to 98.

Description

 High-speed ceramic material (options)

Area of technology

The invention is subject to ceramical materials on

BASIC OXIDES OF TITANIUM AND MAY BE USED IN PRODUCTS

5 MULTIPLE HIGH QUALITY THERMAL STABLE CERAMIC

Condensation with elec- trodes on the basis of the alloy containing Α§ and

Ρά, as well as in industrial products of microfilters.

PREVIOUS LEVEL OF TECHNOLOGY

Нд Condensation is widely used.

10 high-speed ceramic materials with tempera- ture

secrecy not higher than 1120 ° С, which means that it is used internally

ELECTRICAL COMPANIES TO USE THE ALLOY Α§-Ρά

with a content of not more than 30%. The multiplex is modern

The appliance has a high appliance rating.

15 Requirements for such char- acteristics of ceramic materials as

dielectricity, which must be handled 2 issues of the entire gamut of nominal reimbursement of payments, in that

including the range of medium and small capacities, which may be

corresponding to dielectricity,

the temperature coefficient of dielectricity, and

5 also the dielectric angle tangent (δ) or

accessibility (ζ) ~ 1 / 1§ δ). The last parameter is especially

essential for microfilters.

The dielectric ceramic material is known,

used in filters of volumetric operations with

High temperature sintering (1350 - 1450 ° С) (Ш, С, 5985781).

A well-known material is high

sintering device that does not use it as a spare part

dielectrics in the production of many multifunctional ceramics

Condensers and Filters with Electric Alloys

15 70% Αё - 30% Ρά.

Low-temperature high-speed material known

for products of thermo-compensating condensers with a low

temperature sintering, a short circuit 91. -93% basic

Opportunities and 7–9% of profitability, for example, and this basic operation 3 make up 28-36% magnesium oxide Μ§0, 31-39% titanium oxide

ΤJu ₂ , 1-4% calcium oxide CaΟ, 3-5% aluminum oxide Α1 ₂ 0З, 12-

16% oxide acid 8Yu ₂ , 1-3% oxide one of the rare earth

materials from the groups ΝЬ, Τа, аа, Νά, Υ, Ρг (Ш, С, 4506026).

5 This technical solution is partly implemented.

of the present invention.

It is not expensive to use and can not be resolved.

the task we set is relatively low

dielectric constant 8 = 16, not allowing to radiate

On the basis of this wide range of materials, thermostable

kamericheskie ikensheta. The company also has a negative

high dielectric index 1; §δ = (2-4) χ 10 ^"4 per

Frequency 1MHz. Other than that, a large number of those in

Having a glass material does not allow to reach high values

15 extra-high performance.

DISCLOSURE OF INVENTION

The objective of the invention is the creation of a high-frequency 4 ceramics with low sintering temperature

Τсπ = 1080 -1120 ° С, suitable for use in silver

palladium electrodes with a sulfur content of at least 70%,

optimal for the creation of a wide range of received

5 on the basis of this product material dielectric

Occurrence δ from 22 to 60, and for the provision of more

the range of the optional temperature group ΤΚΕ

(ПΙΟΟ, ПЗЗ, ΜПΟ, Μ47, Μ75, Μ150, Μ220, ΜЗЗΟ) and small

a wide range of dielectrics, including

10 СΒЧ.

According to the independent self-contained invention,

This task is solved due to the fact that high-speed

Ceramic material, including titanium oxide, June ₂

STRUCTURAL ORGANIZE, NIBIUM OXIDE _{2 2} θ ₅ and Zinc OXIDE ΖηΟ,

15 contains the indicated oxides in the following case

components, wt.%:

Zinc Oxide - 16.0 - 23.9

Oxide Niobium - 47.4 - 75.9

Titanium oxide - 0.9 - 35.9. 5 AGREEMENT BY THE INDEPENDENT EMBODIMENT OF THE INVENTION,

The task posed is solved due to the fact that in the high-speed

ceramic material, including titanium oxide

the structure of the industry, in the quality of the oxide of titanium, the oxide is used

5 composition (Ζη _χ Ν _У Τ ι _ζ ) 0 ₂ , where X is essentially equal to 0.17, У

The value is equal to 0.332, while the value is equal to 0.5, π and

In this way, niobate of zinc ΖηΝЬ ₂ 0 _6, and

the following ratio of components, wt.%:

Oxide composition (Ζη _χ ΝЬ _У Τϊ _ζ ) 0 ₂ - 2 - 80,

10 Zinc Works ΖηΝЬ ₂ 0 ₆ - 20 - 98.

За With this, the essentials of the essential

of inventions of two independent variants of the invention,

united by a single inventive concept,

Ensuring the desired technical result

15 general cases, for which there is a need

The volume of production. Inventive concept

THIS INVENTION IS SUBMITTED THEREOF CHEMICAL COMPOSITION

material obtained by various competitive options,

It turns out nice. Πππ изимρρ, material obtained from 40%

0 Oxide composition (Ζη _χ , Ν _У , Τϊ _ζ ) 0 ₂ and 60% zinc niobate τηΝ ₂ 0 ₆₎ 6 has the following chemical composition of oxides: ΖηΟ -19.7, b ₂ 0 ₅ -

62.3, Τϊ0 ₂ - 18.0, which is laid down in the declared terms

COMPONENTS ON THE MATERIAL FOR THE FIRST INDEPENDENT VARIANT.

The applicant has not established any - or any sources

5 information that would provide information on technical

Decisions identical to those declared. This pleases, on opinion

Applicant to conclude that the invention is in accordance with the invention

novelty ”(Ν).

Immediate technical result, which can sometimes be

10 Become aware of the implementation of significant business knowledge.

OPTIONS OF THE INVENTION The claimed invention is concluded in

That is, in the following technical solution, are achieved

high values of all basic technical characteristics,

distributing material for use in

15 products of many high-performance condensates, and

Also in large multi-volume and large-volume filters: low

sintering furnace, optimal dielectric

Affordability and high stability and accessibility to

high and high frequencies. 7 Immediate technical result, which can be faster

to be realized and to implement significant

The claimed invention is hereby incorporated into the following.

By the technical solution, all high values are reached.

5 BASIC TECHNICAL CHARACTERISTICS, DISTRIBUTING OPPORTUNITY

material for use in multiuse products

HIGH-QUALITY CONDENSES AND FILTERS: TEMPERATURE

secrecy, optimal dielectric capacity and high

stability.

0 The applicant has not identified any information about the impact

Distinctive features of the invention

technical result. Indicated OWNERS

make a conclusion on the basis of the declared technical solution

The term “inventive step” (18).

5 Quick Descriptions of Drawings

Β The further invention is explained in a convenient manner.

DESCRIPTION OF THE EXAMPLES OF ITS EXISTENCE WITHOUT REFERENCE TO DRAWINGS. 8 BEST MODE FOR CARRYING OUT THE INVENTION

Supported Communications πο

The first option is as follows. Historical

The components mix the vibrator. The resulting mixture

5 synthesize at a temperature of 850 ° C - 950 ° C, after which

grind with small ground to the required specific

a rate of 8 _beats = 2 m ² / g. Then we get the disk

Samples that are in short range between 1080 and 1120 ° C and measure

their electrical characteristics.

10 General Terms and Conditions of Use

The second option is as follows. Synthesize Oxide

composition (Ζη _χ Ν _У Τϊ _ζ ) 0 _2; quick mix with no zinc in

notified cases. The resulting mixture is crushed to

neobhodimoy specific specificity, then it prepares

15 disc samples that are short in the range of 1080 - 1100 ° С and

measure their electrical characteristics.

ACCESSORIES FOR HIGH-QUANTITY CERAMIC

Material for the first option is shown in Table 1. 9 EXAMPLES OF GOODS HIGH-QUALITY CERAMIC

The material for the second version is shown in Table 2.

BASIC TECHNICAL SPECIFICATIONS OBTAINED

Sample materials for the first variant are shown in Table 3.

BASIC TECHNICAL SPECIFICATIONS OBTAINED

Samples of materials for the second option are shown in Table 4.

Analysis of the results indicates that the declared composition

The ceramic material in both versions has

dielectric constant ε = 22.5 -60.1, which means

TAKE CONDENSES WITH A WIDE BAND OF LARGE CAPACITIES, AND ALSO

Allows you to receive a wide range ΤΚΕ (thermostable and

Thermal compensating groups), which ensures the possibility of

wide range of ceramic products, in that

amongst the most efficient reactive thermostable

ρПΟ groups. Low sintering temperature Τсπ = 1080 - 1120 ° С

It allows the use of electrodes with a content of Ρά 30% or less,

which also leads to a significant reduction in production costs, as well as

Ensures the manufacture of thermally stable ceramics

comparatively small capacitance and thermal stability 10 microfilters Low Dielectric Process 1§δ -

(0.3 - 2.5) χ10 ^"4 , including 10 GHz, no more than 2.5x10 ^{" 4} for group

ΜPΟ, ensures high accessibility to ceramics

capacities and microfilters, including many

Intended use

The operator may have been obtained by intentional means of

known materials using well-known technologies and

technical means, in connection with which it is possible to make a conclusion

SUMMARY OF THE INVENTION

Applicability ”(ΙΑ).

eleven

Table 1

HIGH-QUALITY CERAMIC COMPONENTS FOR FIRST OPTIONS

10

fifteen

12

Table 2

HIGH QUALITY COMPONENTS FOR HIGH QUARTER OPTIONS

10

fifteen

thirteen

Table 3

BASIC TECHNICAL SPECIFICATIONS OBTAINED

SAMPLES OF MATERIALS FOR THE FIRST OPTION

10

fifteen

1420

14

Table 4

BASIC TECHNICAL SPECIFICATIONS OF MATERIALS OBTAINED BY THEIR OPTIONS

10

fifteen

Claims

15Formula of the Invention 1. High-speed ceramic material, including titanium oxide Τϊ0 ₂ is a constituent compound, niobium oxide is ЬЬ ₂ θ ₅ and Zinc oxide ΖηΟ, which is different from the fact that it contains the indicated oxides for the following condition of components, weight.%: Excise tax -16.0 -23.9 Oxide Niobium - 47.4 - 75.9 Titanium oxide - 0.9 - 35.9. 0 2. High speed ceramic material, including titanium oxide is a constituent of a mercury that is different that in the quality of titanium oxide is used an oxide of the composition (Ζη _{χ У} Τϊ _ζ ) 0 ₂ , where X is equal to 0.17, Equal 0.332, е 0,5 е е им 0,5 0,5 0,5 0,5 0.5, π and this additionally introduced niobium zinc ΖηΝЬ ₂ 0 _6] πp and the next Comparison of components, wt.%: Oxide composition (Ζη _χ ΝЬ _У Τϊ _ζ ) 0 ₂ -2 - 80, Zinc works ΖηΝЬ ₂ 0 ₆ - 20 - 98.