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Method for preparing potassium sodium niobate functional ceramic film on glass base surface by using laser

A glass matrix, potassium sodium niobate technology, applied in the field of functional ceramics preparation, electronic functional ceramics preparation, can solve the complex process, parameters such as film size and shape can not be controlled, difficult and high vacuum preparation conditions and other problems, to achieve repeatability The effect of high film thickness, shape and size controllability, and short preparation time

Inactive Publication Date: 2012-10-03
SHENZHEN LONGER3D SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, the traditional method requires more complex procedures and difficult to obtain high-vacuum preparation conditions, and the parameters such as the size and shape of the traditional method cannot be controlled when preparing thin films.

Method used

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  • Method for preparing potassium sodium niobate functional ceramic film on glass base surface by using laser
  • Method for preparing potassium sodium niobate functional ceramic film on glass base surface by using laser
  • Method for preparing potassium sodium niobate functional ceramic film on glass base surface by using laser

Examples

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Effect test

example 1

[0024] Press Na 0.5 K 0.5 NbO 3 The molar stoichiometric ratio of Na, K, and Nb in Na, K, and Nb is 0.5:0.5:1 to weigh Na 2 CO 3 、K 2 CO 3 , Nb 2 o 5 The raw materials are poured into a ball mill jar with anhydrous ethanol at a volume ratio of 1:1 and ball milled for 8 hours. The mixed powder obtained by drying the obtained slurry is sieved and pressed into a block. The obtained mixture is pre-fired at 800° C. for two hours, and the obtained potassium sodium niobate block raw material is ball milled again, dried, and sieved to obtain potassium sodium niobate powder. Add potassium sodium niobate powder to 6% mass ratio of PVA and mix it evenly on the surface of ordinary transparent glass substrate. Draw a 5mm*5mm rectangle in the laser control software. Select a 20W fiber pulse laser, scan the powder on the glass substrate directly at a speed of about 300mm / s, a scanning frequency of 80KHz, a pulse width of 10ns, and adjust the focus position. After cooling at room t...

example 2

[0026] Press Na 0.5 K 0.5 NbO 3 The molar stoichiometric ratio of Na, K, and Nb in Na, K, and Nb is 0.5:0.5:1 to weigh NaNO 3 、KNO 3 , Nb 2 o 5 The raw materials are poured into a ball mill jar with anhydrous ethanol at a volume ratio of 1:1 and ball milled for 8 hours. The mixed powder obtained by drying the obtained slurry is sieved and pressed into a block. The obtained mixture is pre-fired at 800° C. for two hours, and the obtained potassium sodium niobate block raw material is ball milled again, dried, and sieved to obtain potassium sodium niobate powder. Add potassium sodium niobate powder to 6% mass ratio of PVA and mix it evenly on the surface of K9 glass substrate. Draw a circular graph of φ5mm in the laser control software. Select a 20W fiber pulse laser to directly scan the powder on the glass substrate at a speed of about 300mm / s and adjust the focus position. After cooling at room temperature, the desired functional ceramic film is obtained.

example 3

[0028] Press Na 0.5 K 0.5 NbO 3 The molar stoichiometric ratio of Na, K, and Nb in Na, K, and Nb is 0.5:0.5:1 to weigh Na 2 CO 3 、K 2 CO 3 , Nb 2 o 5 The raw materials are poured into a ball mill jar with anhydrous ethanol at a volume ratio of 1:1 and ball milled for 8 hours. The mixed powder obtained by drying the obtained slurry is sieved and pressed into a block. The obtained mixture is pre-fired at 800° C. for two hours, and the obtained potassium sodium niobate block raw material is ball milled again, dried, and sieved to obtain potassium sodium niobate powder. The sodium potassium niobate powder is added to 6% by mass of PVA and mixed evenly on the surface of the quartz glass substrate. Draw a 10*2mm line graph in the laser control software. Select a 50W carbon dioxide laser, scan the powder on the glass substrate directly at a speed of about 120mm / s, a scanning frequency of 80KHz, a pulse width of 10ns, and adjust the focus position. After cooling at room tem...

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Abstract

The invention relates to a method for preparing a potassium sodium niobate functional ceramic film on a glass base surface by using a laser, belonging to the field of electronic functional ceramic preparation. The method comprises the following steps: selecting raw materials, weighing according to the stoichiometric proportion of Na0.5K0.5NbO3, mixing, carrying out ball milling, presintering at 800 DEG C for two hours by the traditional molten salt method to prepare the required functional ceramic powder; and evenly mixing and flatly laying ceramic powder and PVA (polyvinyl alcohol) on a glass base surface, drawing the functional ceramic film with required shape and dimension by using control software of the selected laser device, and selecting a pulse laser to directly sinter the powder on the glass base by using proper technological parameters, thereby obtaining the required ceramic film. The invention firstly provides and then directly prepares the potassium sodium niobate piezoelectric ceramic film on the glass base; and the invention is simple and quick to operate and has strong controllability.

Description

technical field [0001] The invention relates to a method for preparing functional ceramics, in particular to a method for preparing potassium sodium niobate lead-free piezoelectric ceramic films, and belongs to the field of preparing electronic functional ceramics. Background technique [0002] Piezoelectric ceramics have the characteristics of converting mechanical energy and electrical energy. In addition to piezoelectricity, they also have stable and excellent physical and chemical properties. They have been widely used in pickups, microphones, earphones, buzzers, ultrasonic depth sounders, Sonar, material ultrasonic flaw detector and other sound converters, piezoelectric detonators, piezoelectric lighters, nuclear goggles, ultrasonic motors and other daily life, industrial production and military fields. Piezoelectric ferroelectric ceramic materials and devices have always occupied an extremely important position in the international electronic materials and components i...

Claims

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Application Information

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IPC IPC(8): C04B35/495C04B35/622C03C17/22
Inventor 刘富荣周伟平何超赵建军陈继民
Owner SHENZHEN LONGER3D SCI & TECH
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