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A method for sintering calcium zirconate microwave dielectric ceramics at low temperature

A microwave dielectric ceramic and low-temperature sintering technology is applied in the field of low-temperature sintering calcium zirconate microwave dielectric ceramics, which can solve the problem that electrodes cannot be co-fired, and achieve the effects of improving the sintering environment, reducing the sintering temperature, and having good fluidity.

Inactive Publication Date: 2017-06-20
HENAN UNIV OF SCI & TECH
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Problems solved by technology

However, CaZrO 3 The sintering temperature is usually above 1550 °C, which is much higher than the melting point of Ag (960 °C) or Cu (1084 °C), and the co-firing of electrodes cannot be achieved, so the reduction of CaZrO 3 The sintering temperature of the material is very important

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  • A method for sintering calcium zirconate microwave dielectric ceramics at low temperature
  • A method for sintering calcium zirconate microwave dielectric ceramics at low temperature

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Embodiment Construction

[0022] The invention is illustrated in detail in the following examples, in which all parts and percentages are by weight unless otherwise indicated.

[0023] Such as figure 1 The preparation technological process of described embodiment comprises the following processes:

[0024] Step 1. Analytical pure BaCO 3 、H 3 BO 3 、 Bi 2 o 3 Powder by mass ratio m (BaCO 3 ) : m (H 3 BO 3 ) : m (Bi 2 o 3) = 1:4:2 ratio to make a mixture, put it into a nylon ball mill tank, and press BaBi respectively 8 B 2 o 16 180~200% and 150~160% of the weight of the mixture are added with zirconia balls and absolute ethanol as ball milling aids, and ball milled in a planetary ball mill for 8~12 hours at a speed of 200~220r / min; The slurry is dried in a drying oven at 120°C for 8 hours; the dried mixture is ground in an agate jar, and the ground mixture is passed through a 120-mesh standard sieve; the sieved mixture is put into a corundum crucible , and then placed in a muffle furnac...

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Abstract

A method for sintering calcium zirconate microwave dielectric ceramics at low temperature. Firstly, the raw materials are formulated into a mixture according to the mass ratio, and then the mixture is ball milled, dried, mixed, screened, and sintered to prepare a sintering aid for use; secondly , weigh the calcium zirconate base material, and add spare sintering aids to the calcium zirconate base material, after ball milling, drying, grinding and sieving, the powder is ready for use; finally, add the binder to the powder for manufacturing Granules, and then the product is obtained after billet making and sintering. The invention can effectively reduce the sintering temperature on the basis of maintaining excellent microwave dielectric properties.

Description

technical field [0001] The invention relates to the field of electronic ceramics and its manufacture, in particular to a method for sintering calcium zirconate microwave dielectric ceramics at low temperature. Background technique [0002] In recent years, with the rapid development of radar and communication technology, mobile communication and portable terminals are developing in the direction of lightweight, miniaturization, integration, high reliability and low cost. Devices also put forward higher requirements. There are two main ways to realize the miniaturization of microwave devices: exploring high dielectric constant microwave dielectric materials and multilayer structure design of microwave devices. Based on the multi-layer structure circuit design, the low temperature co-fired ceramics (LowTemperature Cofired Ceramics, LTCC) technology is used to prepare multi-layer chip components (including chip microwave dielectric resonators, filters, microwave dielectric ant...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/48C04B35/622C04B35/63
Inventor 李谦孙换黄金亮李丽华顾永军
Owner HENAN UNIV OF SCI & TECH
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