Method for preparing submicron NaNbO3 ceramic powder at low temperature

A ceramic powder and sub-micron technology, which is applied in the field of low-temperature preparation of sub-micron NaNbO3 ceramic powder, can solve the problems of complex process and high manufacturing cost, and achieve the effect of simple process, low equipment requirements and low synthesis temperature

Inactive Publication Date: 2014-11-26
陕西光电子先导院科技有限公司
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Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a low-temperature preparation of submicron NaNbO 3 The method of ceramic powder aims to solve the problem of preparing submicron NaNbO 3 Existing problems of high manufacturing cost and complex process

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  • Method for preparing submicron NaNbO3 ceramic powder at low temperature
  • Method for preparing submicron NaNbO3 ceramic powder at low temperature
  • Method for preparing submicron NaNbO3 ceramic powder at low temperature

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Embodiment Construction

[0018] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0019] figure 1 Shows the low-temperature preparation of submicron NaNbO provided by the present invention 3 Process flow of the ceramic powder method. For ease of illustration, only the parts relevant to the present invention are shown.

[0020] Low temperature preparation of submicron NaNbO of the present invention 3 Ceramic powder method for low-temperature preparation of submicron NaNbO 3 The method of ceramic powder comprises the following steps:

[0021] Preparation of a stable niobium oxalate solution;

[0022] Dissolve anhydrous sodium carbonate into deionized water;

[0023] Preparation of NaNbO 3 The precu...

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Abstract

The invention discloses a method for preparing submicron NaNbO3 ceramic powder at low temperature. The method comprises the following steps of: preparing a stable niobium oxalate solution; dissolving anhydrous sodium carbonate in deionized water; preparing a NaNbO3 precursor solution; and obtaining the NaNbO3 pure phase. The method disclosed by the invention is simple in process, low in requirements for equipment, low in synthesis temperature, short in thermal insulation time, low in energy consumption, and cheap in required material, the prepared powder has the characteristics of good crystalline grain development degree, fine granularity, and very light aggregation, and phase formation temperature is especially low.

Description

technical field [0001] The invention belongs to the technical field of chemical material manufacturing, in particular to a low-temperature preparation of submicron NaNbO 3 method of ceramic powder. Background technique [0002] NaNbO 3 It is a very important lead-free piezoelectric material, NaNbO prepared by traditional solid-state method 3 Due to the large grain size, the material has antiferroelectricity at room temperature. It was found that when NaNbO 3 Material grain size between 400-200nm (submicron), NaNbO 3 Powder structure corresponds to Pmc2 1 space group, at this time, NaNbO 3 The material exhibits ferroelectric properties, so the preparation of submicron NaNbO 3 Powder materials are of great significance. At present, submicron NaNbO is prepared at home and abroad 3 The methods of powder materials include solid phase method, co-fired method, hydrothermal method, polymerization without precursor method, molten salt method, and solid phase method to synthesi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/495C04B35/626
Inventor 刘维红苗瑞霞李永锋张博商世广赵萍
Owner 陕西光电子先导院科技有限公司
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