阅读说明：本技术 一种新型高稳定性压电材料及其制备方法 (A kind of novel high-stability piezoelectric material and preparation method thereof ) 是由 蒋杏兵 张晖 吴道福 陈青霖 于 2019-09-30 设计创作，主要内容包括：本发明公开一种新型高稳定性压电材料及其制备方法,属于陶瓷材料技术领域。所述新型高稳定性压电材料配方为：Pb<Sub>x</Sub>Sr<Sub>1-x</Sub>(Zr<Sub>y</Sub>Ti<Sub>1-y</Sub>)O<Sub>3</Sub>+aPbCrO<Sub>4</Sub>+bMnO<Sub>2</Sub>；其中x、y为摩尔比,a、b为重量比,0.93≤x≤0.97,0.51≤y≤0.53,2.0％≤a≤3.0％,0.10％≤b≤0.20％。本发明采用Cr、Mn掺杂锆钛酸铅,有效改善了频率稳定性,在应用中需要频率的稳定性在-10℃～+50℃之间变化率≤0.1％；具备高频率温度稳定性,可以满足各类压电驱动器、陶瓷滤波器等的应用需要,具有较高应用前景。(The present invention discloses a kind of novel high-stability piezoelectric material and preparation method thereof, belongs to technical field of ceramic material.The novel high-stability piezoelectric material formulation are as follows: Pb x Sr 1‑x (Zr y Ti 1‑y )O 3 +aPbCrO 4 +bMnO 2 ；Wherein x, y are molar ratio, and a, b are weight ratio, 0.93≤x≤0.97,0.51≤y≤0.53,2.0%≤a≤3.0%, 0.10%≤b≤0.20%.The present invention uses Cr, Mn doped PZT, effectively improves frequency stability, needs the stability of frequency change rate≤0.1% between -10 DEG C~+50 DEG C in the application；Has high-frequency temperature stability, can satisfy all kinds of piezoelectric actuators, ceramic filter etc. applies needs, has higher application prospect.)

1. a kind of novel high-stability piezoelectric material, which is characterized in that according to parts by weight, including following components:

Pb_xSr_1-x(Zr_yTi_1-y)O₃, 1 part；

PbCrO₄, 2.0%~3.0% part；

MnO₂, 0.10%~0.20% part；

Wherein, x, y are molar ratio, 0.93≤x≤0.97,0.51≤y≤0.53.

2. novel high-stability piezoelectric material as described in claim 1, which is characterized in that the molar ratio x=0.93, y= 0.528；PbCrO₄Parts by weight be 2.5%, MnO₂Parts by weight be b=0.15%.

3. novel high-stability piezoelectric material as described in claim 1, which is characterized in that the molar ratio x=0.95, y= 0.51；PbCrO₄Parts by weight be 3%, MnO₂Parts by weight be b=0.2%.

4. novel high-stability piezoelectric material as described in claim 1, which is characterized in that the molar ratio x=0.97, y= 0.52；PbCrO₄Parts by weight be 2.1%, MnO₂Parts by weight be b=0.1%.

5. a kind of preparation method of novel high-stability piezoelectric material characterized by comprising

Step 1: cleaning ball grinder and zirconia balls；Weighing material and it is mixed into powder in parts by weight, by itself and titanium dioxide Ball milling is at slurry in zirconium ball, deionized water addition ball grinder, and dries；

Step 2: by sieve after drying, the powder after sieving being put into pre-burning alms bowl, naturally cold with furnace after synthesizing at high temperature But；

Step 3: ball milling in ball grinder is added in powder after cooling together with zirconia balls, deionized water, is reached to granularity The material after the completion of ball milling is dried in D50≤0.60 μm, D90≤1.60 μm；

Step 4: being added PVA solution, and be pressed into blank in powder after the drying, then burnt to 1200 DEG C and kept the temperature； The weight that PVA solution is added is 4~5% of powder after drying；

Step 5: being milled to 1mm for the component thickness after firing, and print silver electrode, and burning infiltration silver, then exists at 700~800 DEG C 120~140 DEG C, high voltage polarization under 2~3kV；By the chip after polarization at 120 DEG C aging 4 hours, stand 30 at normal temperature It.

6. the preparation method of novel high-stability piezoelectric material as claimed in claim 5, which is characterized in that claim in parts by weight Amount material is simultaneously mixed into before powder, prepares material Pb_xSr_1-x(Zr_yTi_1-y)O₃、PbCrO₄And MnO₂, keep the temperature and dry at 120 DEG C Natural cooling after 2 hours dry.

7. the preparation method of novel high-stability piezoelectric material as claimed in claim 5, which is characterized in that the step 1 In, powder, zirconia balls and the deionized water being added in ball grinder are 1:2:0.65 according to weight ratio；Slurry is put into baking oven In dried, drying temperature be 100~110 DEG C；

In the step 3, powder, zirconia balls and the deionized water being added in ball grinder are 1:2:0.65 according to weight ratio； Material after the completion of ball milling is put into baking oven and is dried, drying temperature is 115~125 DEG C.

8. the preparation method of novel high-stability piezoelectric material as claimed in claim 5, which is characterized in that in the step 2 Sieve is 60 mesh stainless steel mesh, and the synthesis temperature of the pre-burning alms bowl is 870 DEG C, and generated time is 2 hours.

9. the preparation method of novel high-stability piezoelectric material as claimed in claim 5, which is characterized in that it is pressed into blank, Then being burnt to 1200 DEG C and being kept the temperature includes: to be pressed into blank under the pressure of 4MPa, then by blank with 1-2 DEG C/min Rate burnt in high temperature furnace to 1200 DEG C, keep the temperature 2 hours.

Technical field

The present invention relates to ceramic material technical field, in particular to a kind of novel high-stability piezoelectric material and its system Preparation Method.

Background technique

Piezoelectric material is a kind of extensive functional material of application, it is to realize mechanical energy and electricity by positive inverse piezoelectric effect Conversion between energy.With the development of modern industry, to all kinds of ceramic filters, more stringent requirements are proposed in terms of stability.

Piezoelectric ceramics performance parameter can change with the variation of temperature, the change rate between different materials formula be it is each not It is identical.Under certain operating conditions, need piezo ceramic element with the variation of temperature, frequency variation is small as far as possible, It is asked to have higher frequency stability.

Summary of the invention

The purpose of the present invention is to provide a kind of novel high-stability piezoelectric material and preparation method thereof, with solve at present with Temperature change when, the problem of piezoelectric ceramics is not sufficiently stable.

In order to solve the above technical problems, the present invention provides a kind of novel high-stability piezoelectric material, and according to parts by weight, packet Include following components:

Pb_xSr_1-x(Zr_yTi_1-y)O₃, 1 part；

PbCrO₄, 2.0%~3.0% part；

MnO₂, 0.10%~0.20% part；

Wherein, x, y are molar ratio, 0.93≤x≤0.97,0.51≤y≤0.53.

Optionally, the molar ratio x=0.93, y=0.528；PbCrO₄Parts by weight be 2.5%, MnO₂Parts by weight Number is b=0.15%.

Optionally, the molar ratio x=0.95, y=0.51；PbCrO₄Parts by weight be 3%, MnO₂Parts by weight For b=0.2%.

Optionally, the molar ratio x=0.97, y=0.52；PbCrO₄Parts by weight be 2.1%, MnO₂Parts by weight Number is b=0.1%.

The present invention also provides a kind of preparation methods of novel high-stability piezoelectric material, comprising:

Step 1: cleaning ball grinder and zirconia balls；Weighing material and it is mixed into powder in parts by weight, by itself and two Ball milling is at slurry in zirconia ball, deionized water addition ball grinder, and dries；

Step 2: by sieve after drying, the powder after sieving being put into pre-burning alms bowl, after synthesizing at high temperature certainly with furnace It is so cooling；

Step 3: ball milling in ball grinder is added in powder after cooling together with zirconia balls, deionized water, to granularity Reach D50≤0.60 μm, the material after the completion of ball milling is dried in D90≤1.60 μm；

Step 4: being added PVA solution, and be pressed into blank in powder after the drying, is then burnt to 1200 DEG C simultaneously Heat preservation；The weight that PVA solution is added is 4~5% of powder after drying；

Step 5: being milled to 1mm for the component thickness after firing, and print silver electrode, the burning infiltration silver at 700~800 DEG C, so The high voltage polarization at 120~140 DEG C, 2~3kV afterwards；By the chip after polarization at 120 DEG C aging 4 hours, stand at normal temperature 30 days.

Optionally, it weighing material and is mixed into before powder in parts by weight, prepares material Pb_xSr_1-x(Zr_yTi_1-y)O₃、 PbCrO₄And MnO₂, the natural cooling after heat preservation drying 2 hours at 120 DEG C.

Optionally, in the step 1, powder, zirconia balls and the deionized water in ball grinder is added according to weight ratio For 1:2:0.65；Slurry is put into baking oven and is dried, drying temperature is 100~110 DEG C；

In the step 3, powder, zirconia balls and the deionized water being added in ball grinder are 1:2 according to weight ratio: 0.65；Material after the completion of ball milling is put into baking oven and is dried, drying temperature is 115~125 DEG C.

Optionally, sieve is 60 mesh stainless steel mesh in the step 2, and the synthesis temperature of the pre-burning alms bowl is 870 DEG C, Generated time is 2 hours.

Optionally, it is pressed into blank, then being burnt to 1200 DEG C and being kept the temperature includes: to be pressed into hair under the pressure of 4MPa Then base is burnt blank in high temperature furnace to 1200 DEG C with 1-2 DEG C/min of rate, keep the temperature 2 hours.

A kind of novel high-stability piezoelectric material and preparation method thereof, the novel high-stability are provided in the present invention Piezoelectric material formulation are as follows: Pb_xSr_1-x(Zr_yTi_1-y)O₃+a PbCrO₄+bMnO₂；Wherein x, y are molar ratio, and a, b are weight ratio, 0.93≤x≤0.97,0.51≤y≤0.53,2.0%≤a≤3.0%, 0.10%≤b≤0.20%.Ball grinder is cleaned first And zirconia balls；Weighing material and it is mixed into powder in parts by weight, ball milling is added in itself and zirconia balls, deionized water Ball milling is at slurry in tank, and dries；By sieve after drying, the powder after sieving is put into pre-burning alms bowl, is synthesized at high temperature Afterwards with furnace natural cooling；Ball milling in ball grinder is added in powder after cooling together with zirconia balls, deionized water, to granularity Reach D50≤0.60 μm, the material after the completion of ball milling is dried in D90≤1.60 μm；PVA solution is added in powder after the drying, And it is pressed into blank, then burnt to 1200 DEG C and is kept the temperature；Component thickness after firing is milled to 1mm, and prints silver electrode, Burning infiltration is silver-colored at 700~800 DEG C, then the high voltage polarization at 120~140 DEG C, 2~3kV；By the chip after polarization at 120 DEG C Lower aging 4 hours stands 30 days at normal temperature.

The present invention uses Cr, Mn doped PZT, effectively improves frequency stability, needs the steady of frequency in the application Qualitative change rate≤0.1% between -10 DEG C~+50 DEG C；Have high-frequency temperature stability, can satisfy all kinds of Piezoelectric Drivings The application of device, ceramic filter etc. needs, and has higher application prospect.

Detailed description of the invention

Fig. 1 is the flow diagram of the preparation method of novel high-stability piezoelectric material provided by the invention.

Specific embodiment

Below in conjunction with the drawings and specific embodiments to a kind of novel high-stability piezoelectric material proposed by the present invention and its system Preparation Method is described in further detail.According to following explanation and claims, advantages and features of the invention will be become apparent from.It needs Illustrate, attached drawing is all made of very simplified form and using non-accurate ratio, only to convenient, lucidly auxiliary is said The purpose of the bright embodiment of the present invention.