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Method for preparing high-quality-factor neodymium niobate dielectric ceramic by means of manganese ion substitution

A technology of microwave dielectric ceramics and high quality factor, applied in the field of ceramic compositions, can solve the problems of not being able to adapt to the development trend of modern communication, increasing loss, unfavorable application and the like

Inactive Publication Date: 2014-12-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The low quality factor will lead to increased loss of materials during signal transmission, which is not conducive to the application of high frequency and microwave communication transmission, and cannot adapt to the development trend of modern communication
[0004] Therefore, the quality factor restricts the application of neodymium niobate ceramics, but there are few reports on its preparation method and modification research

Method used

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  • Method for preparing high-quality-factor neodymium niobate dielectric ceramic by means of manganese ion substitution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] According to manganese ion substitution neodymium niobate microwave dielectric ceramic component Nd (1-x) mn 1.5x NbO 4 (x=0.005), weigh Nd 2 o 3 -8.4546g, Nb 2 o 5 -6.5019g, MnCO 3 -0.0435g ingredients, a total of 15g; the mixed powder is added to the polyester tank, after adding 160ml of deionized water and 140g of zirconia balls, ball milled on a planetary ball mill for 6 hours, the speed is 950 rpm, and the discharge is placed Dry in a drying oven at 120°C and pass through a 40-mesh sieve, then calcinate the powder at 900°C for 4 hours, put the calcined ceramic powder into a polyester tank, and add 160ml of deionized water and 140g of zirconia balls Finally, ball mill for 6 hours on the planetary ball mill for the second time, and dry at 120°C after discharge, and add 6% of its weight paraffin as a binder to the powder for granulation, and pass through a 80-mesh sieve, and then use the powder The tablet press presses a green body with a diameter of 10 mm and ...

Embodiment 2

[0015] According to manganese ion substitution neodymium niobate microwave dielectric ceramic component Nd (1-x) mn 1.5x NbO 4 (x=0.01), weigh Nd 2 o 3 -8.4115g, Nb 2 o 5 -6.5014g, MnCO 3 -0.0871g ingredients, a total of 15g; the mixed powder is added to the polyester tank, after adding 160ml deionized water and 140g zirconia balls, ball milled on a planetary ball mill for 6 hours, the speed is 950 rpm, and the discharge is placed Dry in a drying oven at 120°C and pass through a 40-mesh sieve, then calcinate the powder at 900°C for 4 hours, put the calcined ceramic powder into a polyester tank, and add 160ml of deionized water and 140g of zirconia balls Finally, ball mill for 6 hours on the planetary ball mill for the second time, and dry at 120°C after discharge, and add 6% of its weight paraffin as a binder to the powder for granulation, and pass through a 80-mesh sieve, and then use the powder The tablet press presses a green body with a diameter of 10 mm and a thick...

Embodiment 3

[0017] According to manganese ion substitution neodymium niobate microwave dielectric ceramic component Nd (1-x) mn 1.5x NbO 4 (x=0.02), weigh Nd 2 o 3 -8.3254g, Nb 2 o 5 -6.5005g, MnCO 3 -0.1741g ingredients, a total of 15g; the mixed powder is added to the polyester tank, after adding 160ml deionized water and 140g zirconia balls, ball milled on a planetary ball mill for 6 hours, the speed is 950 rpm, and the discharge is placed Dry in a drying oven at 120°C and pass through a 40-mesh sieve, then calcinate the powder at 900°C for 4 hours, put the calcined ceramic powder into a polyester tank, and add 160ml of deionized water and 140g of zirconia balls Finally, ball mill for 6 hours on the planetary ball mill for the second time, and dry at 120°C after discharge, and add 6% of its weight paraffin as a binder to the powder for granulation, and pass through a 80-mesh sieve, and then use the powder The tablet press presses a green body with a diameter of 10 mm and a thick...

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Abstract

The invention discloses a method for preparing high-quality-factor neodymium niobate dielectric ceramic by means of manganese ion substitution. The preparation method comprises the following steps: raw materials, namely Nd2O3, MnCO3 and Nb2O5, are mixed; the mixed raw materials, deionized water and grinding balls are added into a polyester tank, placed on a ball grinder to be subjected to ball grinding, dried and screened; powder is subjected to ball grinding after being pre-sintered, dried, added with paraffin, granulated, screened and pressed by tablet press to form green ware; the green ware is sintered and heat preservation is performed to obtain the neodymium niobate dielectric ceramic by means of manganese ion substitution. The neodymium niobate dielectric ceramic prepared by means of manganese ion substitution adopts manganese ions to substitute Nd in A position in NdNbO4; experiments prove that the quality factor ranges from 33,700 GHz to 80,000 GHz; the high quality factor can meet requirements for materials when the frequency of communication is in high-frequency band and meanwhile can satisfy wide application of satellite broadcast, mobile telephone base stations and other microwave equipment to the field of personal communication.

Description

technical field [0001] The invention relates to a ceramic composition, in particular to a high quality factor neodymium niobate microwave dielectric ceramic. Background technique [0002] With the continuous development of electronic information technology in the direction of high frequency and digitalization, the requirements for miniaturization, integration and modularization of components are becoming more and more urgent. Niobate material is an important electronic material. It has excellent photoelectric properties and nonlinear optical properties, good optical effects and electrical properties, and unique properties such as variable crystal phase boundaries. It is a multifunctional material with great research and application value. , which are currently mainly used in the manufacture of capacitors and optoelectronic devices. With the progress of human society, the performance requirements for electronic materials used in various electronic equipment components tend t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/50C04B35/622
Inventor 张平宋振坤王月
Owner TIANJIN UNIV
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