The preparation method of textured potassium niobate sodium-based leadless piezoelectric ceramic

The preparation method of textured potassium niobate sodium-based leadless piezoelectric ceramic

  • CN 101,863,661 B
  • Filed: 06/04/2010
  • Issued: 01/06/2016
  • Est. Priority Date: 06/04/2010
  • Status: Active Grant
First Claim
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1. the preparation method of textured potassium niobate sodium-based leadless piezoelectric ceramic, is characterized in that, comprises the steps:

  • (1) slurry preparation;

    be dissolved in the Terpineol 350 of 149.39g by 6.74g ethyl cellulose, heated and stirred, until ethyl cellulose dissolves formation clear solution completely, takes 9.558gNa 2cO 3, 13.834gK 2cO 3, 50.758gNb 2o 5with 0.3gCuO mixing after 800 DEG C of pre-burnings, add in above-mentioned solution, ball milling mixes for 2 hours, then by 2.746gNaNbO 3sheet template grains adds in slurry, continues ball milling 30 minutes, (2) silk screen printing;

    by the slurry silk screen printing that configures on mylar, put into the oven for drying of 100 DEG C, repeats silk screen printing and dries 40-50 time, finally forming the ceramic membrane of 0.2mm,(3) shaping;

    the square piece ceramic membrane obtained being cut into 11mm ×

    11mm, take off diaphragm from substrate, overlap about 50 layers, compression moulding,(4) plastic removal sintering;

    above-mentioned biscuit of ceramics is put into heat treatment furnace and get rid of organism in 650 DEG C, the sample after plastic removal through isostatic cool pressing process, then puts into High Temperature Furnaces Heating Apparatus again, is warming up to 1120 DEG C with the speed of 5 DEG C/min, is incubated 2 hours.

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