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Ni2O3-SnO2-Zn2SnO4 pressure-sensitive composite ceramic material and preparation method thereof

A composite ceramic and powder technology, applied in the field of inorganic non-metals, can solve problems such as circuit misoperation or increased damage

Inactive Publication Date: 2016-01-13
HENAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, with the improvement of integration in the field of electronic circuits, electronic equipment has developed towards miniaturization and multi-function, which has gradually reduced the driving voltage and withstand voltage value of various electronic components in the circuit, which will lead to overvoltage caused by operation, human body static electricity, etc. The probability of misoperation or damage to the entire circuit caused by discharge, electromagnetic pulse interference, etc. is greatly increased

Method used

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  • Ni2O3-SnO2-Zn2SnO4 pressure-sensitive composite ceramic material and preparation method thereof
  • Ni2O3-SnO2-Zn2SnO4 pressure-sensitive composite ceramic material and preparation method thereof

Examples

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preparation example Construction

[0019] a Ni 2 O 3 -SnO 2 -Zn 2 SnO 4 A preparation method of a pressure-sensitive composite ceramic material, comprising the following steps:

[0020] Step 1. The SnO 2 Mixed with ZnO in a molar ratio of 1:2, and loaded into a nylon ball mill tank, then added alcohol and ball-milled for 12 hours at a rotational speed of 120 rev / min to obtain slurry, for subsequent use;

[0021] Step 2: After drying the ball-milled slurry in step 1 at 21 ℃ ~ 150 ℃, send it into the powder tablet machine, and press it into a diameter of (15 ~ 30 MPa under the condition of (80 ~ 160) MPa. ) mm discs, calcined at 1000 °C for 2 hours, then cooled to room temperature naturally, and pulverized to obtain Zn 2 SnO 4 powder, spare;

[0022] Step 3. Weigh (0.0015~0.0016) molNi respectively 2 O 3 , 0.80molSnO 2 and 0.20mol of Zn prepared in step 1 2 SnO 4The powder is dry-mixed, then loaded into a nylon ball mill tank, and then ball-milled for 12 hours at a rotational speed of 120 rpm by addi...

Embodiment 1

[0027] a Ni 2 O 3 -SnO 2 -Zn 2 SnO 4 A preparation method of a pressure-sensitive composite ceramic material, comprising the following steps:

[0028] Step 1. The SnO 2 Mixed with ZnO in a molar ratio of 1:2, and loaded into a nylon ball mill tank, then added alcohol and ball-milled for 12 hours at a rotational speed of 120 rev / min to obtain slurry, for subsequent use;

[0029] Step 2: After drying the slurry after ball milling in step 1 at 21 ℃ ~ 150 ℃, send it into a powder tablet press, and press it into a disc with a diameter of 30 mm under the condition of 80 MPa. calcined at 1000 °C for 2 hours, then cooled to room temperature naturally, and pulverized to obtain Zn 2 SnO 4 powder, spare;

[0030] Step 3. Weigh 0.0015mol Ni respectively 2 O 3 , 0.80molSnO 2 and 0.20mol of Zn prepared in step 1 2 SnO 4 The powder is dry-mixed, then loaded into a nylon ball mill tank, and then ball-milled for 12 hours at a rotational speed of 120 rpm by adding alcohol to obtain...

Embodiment 2

[0035] a Ni 2 O 3 -SnO 2 -Zn 2 SnO 4 A preparation method of a pressure-sensitive composite ceramic material, comprising the following steps:

[0036] Step 1. The SnO 2 Mixed with ZnO in a molar ratio of 1:2, and loaded into a nylon ball mill tank, then added alcohol and ball-milled for 12 hours at a rotational speed of 120 rev / min to obtain slurry, for subsequent use;

[0037] Step 2: After drying the slurry after ball milling in step 1 at 21 ℃ ~ 150 ℃, send it into a powder tablet press, and press it into a disc with a diameter of 30 mm under the condition of 80 MPa. calcined at 1000 °C for 2 hours, then cooled to room temperature naturally, and pulverized to obtain Zn 2 SnO 4 powder, spare;

[0038] Step 3. Weigh 0.003mol Ni respectively 2 O 3 , 0.80molSnO 2 and 0.20mol of Zn prepared in step 1 2 SnO 4 The powder is dry-mixed, then loaded into a nylon ball mill tank, and then ball-milled for 12 hours at a rotational speed of 120 rpm by adding alcohol to obtain ...

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Abstract

The invention discloses a Ni2O3-SnO2-Zn2SnO4 pressure-sensitive composite ceramic material, which is prepared by mixing, pressing, and sintering SnO2 powder, Zn2SnO4 powder, and Ni2O3 powder, wherein the mole ratio of SnO2 powder to Zn2SnO4 powder to Ni2O3 powder is 80:20:x, and x is in a range of 0.15 to 0.6. By doping Ni2O3, the pressure-sensitive voltage gradient of SnO2-Zn2SnO4 composite ceramic can be effectively adjusted, and thus the provided Ni2O3-SnO2-Zn2SnO4 pressure-sensitive composite ceramic material can be used in most voltage protection fields in a lower voltage range without changing the size of devices.

Description

technical field [0001] The invention relates to the field of inorganic non-metals, in particular to a kind of Ni 2 O 3 -SnO 2 -Zn 2 SnO 4 Pressure-sensitive composite ceramic material and preparation method thereof. Background technique [0002] Varistor is a material whose resistance value is sensitive to applied voltage. Its resistance value drops sharply with the increase of voltage at a certain temperature and within a certain voltage range, and has nonlinear volt-ampere characteristics. In recent years, with the improvement of the level of integration in the field of electronic circuits, the development of miniaturization and multi-function of electronic equipment has gradually reduced the driving voltage and withstand voltage value of various electronic components in the circuit, which will lead to excessive operating voltage and static electricity of the human body. The probability of misoperation or damage to the entire circuit caused by discharge, electromagnet...

Claims

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Application Information

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IPC IPC(8): C04B35/457
Inventor 臧国忠李立本王晓飞周锋子王丹丹
Owner HENAN UNIV OF SCI & TECH
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