Unlock instant, AI-driven research and patent intelligence for your innovation.

k0.5bi0.5tio3–bini0.5zr0.5o3 electrostrictive ceramic materials and their preparation

A ceramic material and stretching technology, applied in the field of perovskite structure electrostrictive ceramics, can solve problems such as ecological and environmental hazards, and achieve the effect of improving electrostrictive performance

Inactive Publication Date: 2019-03-22
BEIJING UNIV OF TECH
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the performance of lead-based materials is excellent, the main component of lead-containing materials, PbO (or Pb 3 o 4 ) content accounts for more than 70% of the total raw materials, such a high content of lead will cause serious harm to the ecological environment and human beings during the preparation, use, disposal or recycling of piezoelectric ceramics

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
  • k0.5bi0.5tio3–bini0.5zr0.5o3 electrostrictive ceramic materials and their preparation
  • k0.5bi0.5tio3–bini0.5zr0.5o3 electrostrictive ceramic materials and their preparation
  • k0.5bi0.5tio3–bini0.5zr0.5o3 electrostrictive ceramic materials and their preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] formula:

[0022] 0.99K 0.5 Bi 0.5 TiO 3 -0.01BiNi 0.5 Zr 0.5 o 3

[0023]Process: the calcination temperature of the raw material powder is 830°C, the forming pressure is 190MPa, and the sintering temperature after forming is 1050°C; other process conditions are the same as those of the comparative example.

Embodiment 2

[0025] formula:

[0026] 0.98K 0.5 Bi 0.5 TiO 3 -0.03BiNi 0.5 Zr 0.5 o 3

[0027] Process: The calcination temperature of the raw material powder is 855° C., the forming pressure is 230 MPa, and the sintering temperature after forming is 1060° C.; other process conditions are the same as those of the comparative example.

Embodiment 3

[0029] formula:

[0030] 0.94K 0.5 Bi 0.5 TiO 3 -0.06BiNi 0.5 Zr 0.5 o 3

[0031] Process: The raw material powder calcining temperature is 870°C, the forming pressure is 270MPa, and the sintering temperature after forming is 1070°C; other process conditions are the same as those of the comparative example.

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

No PUM Login to View More

Abstract

The invention relates to a K0.5Bi0.5TiO3-BiNi0.5Zr0.5O3 electrostrictive ceramic material and preparation thereof and belongs to the field of ferroelectric ceramics of a perovskite structure. The K0.5Bi0.5TiO3-BiNi0.5Zr0.5O3 electrostrictive ceramic material is represented as general formula (1-x)K0.5Bi0.5TiO3-BiNi0.5Zr0.5O3 (0<x<=0.08). The calcination temperature of a binary system ranges from 800 DEG C to 900 DEG C, molding pressure thereof ranges from 150 MPa to 300 Mpa, the sintering temperature thereof ranges from 1040 DEG C to 1080 DEG C, the maximum strain capacity thereof varies between 0.015 and 0.077 along with change of components of the binary system, a dynamic piezoelectric coefficient d33* varies from 46 pC / N to 113 pC / N, and when x is equal to 0.06, the binary system has the maximum d33*-113 pC / N and the maximum strain Smax-0.077%.

Description

technical field [0001] The invention belongs to the field of perovskite structure electrostrictive ceramics, and relates to a new type of binary K with relatively large piezoelectric performance. 0.5 Bi 0.5 TiO 3 based lead-free piezoelectric ceramic materials, specifically (1-x)K 0.5 Bi 0.5 TiO 3 -xBiNi 0.5 Zr 0.5 o 3 (0<x≤0.08) is a lead-free large electrostrictive ceramic material composition and a preparation method thereof. technical background [0002] In 1977, L.E. Cross of the United States began to study the electrostrictive effect, and received strong support from the US Navy. In 1979, the new electrostrictive material lead magnesium niobate (PMN) ceramics developed by L.E.Cross et al. won the top ten scientific and technological achievements in the United States. Electrostrictive ceramics are also a functional ceramic material that can convert electrical energy and mechanical energy. .Before the discovery of electrostrictive materials, piezoelectric ma...

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): C04B35/49C04B35/622
CPCC04B35/475C04B35/49C04B35/622C04B2235/3201C04B2235/3279C04B2235/768C04B2235/96
Inventor 朱满康郭金键李玲郑木鹏侯育冬刘晶冰王如志汪浩严辉
Owner BEIJING UNIV OF TECH