Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing leadless piezoelectric potassium sodium niobate film

A potassium-sodium niobate, lead-free piezoelectric technology, applied in the fields of chemical instruments and methods, inorganic chemistry, niobium compounds, etc., can solve problems such as the unobtainable properties of potassium-sodium niobate thin film, instability of potassium-sodium niobate precursor solution, etc. , to achieve good preferred orientation, not easy to hydrolyze, dense and uniform crystal grains

Inactive Publication Date: 2011-06-01
XI AN JIAOTONG UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(Nakashima, Y., et al., Lead-free piezoelectric(K, Na)NbO 3 thin films derived from metal alkoxide precursors. Japanese Journal of Applied Physics Part2-Letters & Express Letters, 2007.46(12-16): 311-313; Nakashima, Y., et al, Chemical Processing and Characterization of Ferroelectric(K, Na)NbO 3 Thin Films. Japanese Journal of Applied Physics, 2007, 46, 10B, 6971-6975; Kiyotaka Tanaka, et al, Effect of(Na, K)-Excess Precursor Solutions on Alkoxy-Derived(Na, K)NbO 3 Powders and Thin Films.Japanese Journal of Applied Physics, 2007, 46, 10B, 6964-6970), because the precursor solution is all metal ethoxide combination, so the potassium sodium niobate precursor solution of preparation is very unstable, is easy to hydrolyze, thereby cannot Potassium sodium niobate thin film with excellent performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing leadless piezoelectric potassium sodium niobate film
  • Method for preparing leadless piezoelectric potassium sodium niobate film
  • Method for preparing leadless piezoelectric potassium sodium niobate film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Molar ratio NbCl 5 : Ethanol = 1: 10 Weigh anhydrous niobium pentachloride and absolute ethanol respectively, use anhydrous benzene as the reaction solvent, and then feed ammonia gas for 3 hours, and the obtained white precipitate NH 4 Cl suction filtration, the obtained filtrate was washed with benzene, and the benzene and excess absolute ethanol were removed by normal pressure distillation to obtain a yellow transparent niobium ethanol solution.

[0018] According to Na 0.5 K 0.5 NbO 3 Potassium, sodium and niobium molar ratio Na:K:Nb=0.5:0.5:1 ratio, first take anhydrous sodium acetate and anhydrous potassium acetate, and be dissolved in acetic acid solution, obtain potassium-sodium mixed solution; Next, take the niobium ethanol solution and dissolve it in the ethylene glycol methyl ether solution to obtain a niobium-containing solution. Mix the potassium-sodium-containing mixed solution obtained above with the niobium-containing solution, heat to 100° C., and st...

Embodiment 2

[0021] Molar ratio NbCl 5 : Ethanol = 1: 14 Weigh anhydrous niobium pentachloride and absolute ethanol respectively, use anhydrous benzene as the reaction solvent, and feed ammonia gas for 3 hours, and the obtained white precipitate NH 4 Cl suction filtration, the obtained filtrate was washed with benzene, and the benzene and excess absolute ethanol were removed by normal pressure distillation to obtain a yellow transparent niobium ethanol solution.

[0022] According to Na 0.5 K 0.5 The molar ratio of potassium, sodium and niobium in NbO3 is Na:K:Nb=0.5:0.5:1, first weigh anhydrous sodium acetate and anhydrous potassium acetate, dissolve them in acetic acid solution, and obtain a mixed solution containing potassium and sodium ; Next, take niobium ethanol solution and dissolve it in ethylene glycol methyl ether solution to obtain niobium-containing solution. Mix the potassium-sodium-containing mixed solution obtained above with the niobium-containing solution, heat to 100° ...

Embodiment 3

[0025] Molar ratio NbCl 5 : Ethanol = 1: 16 Weigh anhydrous niobium pentachloride and absolute ethanol respectively, use anhydrous benzene as the reaction solvent, and feed ammonia gas for 4 hours, and the obtained white precipitate NH 4 Cl suction filtration, the obtained filtrate was washed with benzene, and the benzene and excess absolute ethanol were removed by normal pressure distillation to obtain a yellow transparent niobium ethanol solution.

[0026] According to Na 0.5 K 0.5In NbO the molar ratio Na:K:Nb=0.5:0.5:1 ratio of sodium potassium and niobium in NbO, at first take by weighing anhydrous sodium acetate and anhydrous potassium acetate, be dissolved in the acetic acid solution, obtain the mixed solution containing potassium sodium; Next, take the niobium ethanol solution and dissolve it in the ethylene glycol methyl ether solution to obtain a niobium-containing solution. Mix the potassium-sodium-containing mixed solution obtained above with the niobium-contain...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention relates to the field of lead-free functional piezoelectric materials, in particular to a preparation method of a lead-free piezoelectric potassium-sodium niobate film. The method includes the following steps: absolute columbium pentachloride NbCl5 and absolute ethyl alcohol are weighed and anhydrous benzene is used as a reaction solvent. Ammonia gas is added, and then sucking filtration, washing and distillation are carried out to obtain a columbium ethoxide solution; anhydrous sodium acetate and anhydrous potassium acetate are weighted and dissolved in a hexanoic acid solution to obtain a mixed solution containing potassium and sodium; secondly, the columbium ethoxide solution is weighed and dissolved in an ethylene glycol monomethyl ether solution to obtain a solution containing columbium; the mixed solution containing potassium and sodium and the solution containing columbium, obtained previously, are mixed, heated and stirred to obtain the solution of potassium-sodium niobate collosol which is used as a precursor solution for preparing the film by the use of a rotary film making method.

Description

technical field [0001] The invention relates to the field of lead-free piezoelectric functional materials, in particular to a preparation method of a lead-free piezoelectric potassium sodium niobate film. Background technique [0002] At present, the production of piezoelectric materials is still concentrated on the traditional lead zirconate titanate Pb(Zr,Ti)O 3 (PZT)-based piezoelectric ceramics, but the content of lead oxide in the PZT-based ceramics exceeds 60% of the total mass of raw materials. Lead oxide is a volatile toxic substance, which brings serious harm to human beings and the ecological environment, which is contrary to the sustainable development of human society. [0003] The lead-free piezoelectric material potassium sodium niobate, due to its excellent piezoelectric properties, has attracted widespread attention and is considered as a possible substitute for PZT-based piezoelectric materials (Yasuyoshi Satio, Hisaaki Takao, et al, Lead-free piezoceramic ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C01G33/00
Inventor 任巍阎鑫吴小清王玲艳史鹏陈晓峰姚熹
Owner XI AN JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com