Preparation method of zero expanding material with multiferroic and high mechanical properties

A technology with mechanical properties and zero expansion, applied in the field of inorganic non-metallic materials, can solve problems such as application limitations, and achieve the effects of simple preparation process, high mechanical properties, good thermal stability and mechanical stability

Inactive Publication Date: 2010-08-11
UNIV OF SCI & TECH BEIJING
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the known multiferroic materials are often difficult to have good thermal stability and mechanical properties, which limits their applications.

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
  • Preparation method of zero expanding material with multiferroic and high mechanical properties
  • Preparation method of zero expanding material with multiferroic and high mechanical properties
  • Preparation method of zero expanding material with multiferroic and high mechanical properties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Utilize the present invention to synthesize 0.9PbTiO 3 -0.1Bi(Ni 1 / 2 Ti 1 / 2 )O 3 . Weigh 7.0308 grams of PbO, 0.8154 grams of Bi 2 o 3 , 0.1307 grams of NiO and 2.6553 grams of TiO 2 The powder raw material is ball milled in ethanol solution for 24 hours to make it evenly mixed, and the dried powder is kept at 800°C for 3 hours, cooled and pressed into tablets, kept at 1100°C for 3 hours, cooled and ground to obtain 0.9PbTiO 3 -0.1Bi(Ni 1 / 2 Ti 1 / 2 )O 3 .

Embodiment 2

[0014] Utilize the present invention to synthesize 0.8PbTiO 3 -0.2Bi(Ni 1 / 2 Ti 1 / 2 )O 3 . Weigh 6.2496 grams of PbO, 1.6308 grams of Bi 2 o 3 , 0.2614 grams of NiO and 2.5155 grams of TiO 2 The powder raw material is ball-milled in ethanol solution for 24 hours to make it evenly mixed, and the dried powder is kept at 850°C for 4 hours. After cooling down, it is pressed into strips, placed in a porcelain boat and kept at 1150°C for 8 hours. After cooling, it is obtained The product is a strip-shaped zero-expansion material 0.8PbTiO 3 -0.2Bi(Ni 1 / 2 Ti 1 / 2 )O 3 .

Embodiment 3

[0016] Utilize the present invention to synthesize 0.4PbTiO 3 -0.6Bi(Ni 1 / 2 Ti 1 / 2 )O 3 . Weigh 3.1248 grams of PbO, 4.8926 grams of Bi 2 o 3 , 0.7843 grams of NiO and 1.9565 grams of TiO 2 The powder raw material is ball milled in ethanol solution for 24 hours to make it evenly mixed, and the dried powder is kept at 900°C for 5 hours, cooled and pressed into tablets, kept at 1200°C for 12 hours, cooled and ground to obtain 0.4PbTiO 3 -0.6Bi(Ni 1 / 2 Ti 1 / 2 )O 3 Powder.

[0017] (1-x)PbTiO prepared by the present invention 3 -xBi(Ni 1 / 2 Ti 1 / 2 )O 3 (x=0.1, 0.2, 0.3) The electric hysteresis loop diagram of the ceramic sheet obtained by the powder after secondary sintering is as follows figure 1 As shown, the hysteresis loops measured from the corresponding powder samples are shown in figure 2 shown. figure 1 Indicating that the compound has good ferroelectric properties, figure 2 It shows that the compound is ferromagnetic.

[0018] Such as image 3 As shown,...

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 takes analytically pure PbO, Bi2O3, NiO and TiO2 as raw materials, solid phase method is adopted to synthesize (1-x)PbTiO3-xBi(Ni1/2Ti1/2)O3, x is more than or equal to 0.0 and less than or equal to 0.6, PbO, Bi2O3, NiO and TiO2 are calculated and weighed by target x value, the weighed samples are subject to ball milling for 24 hours in ethanol solution, thus the samples are mixed fully, the dried powder is subject to heat preservation at 800-900 DEG C for 3-5 hours, is pressed into pieces after being subject to temperature reduction and cooling and then is subject to heat preservation at 1100-1200 DEG C for 3-12 hours, and cooling is carried out, thus obtaining zero expanding material (1-x)PbTiO3-xBi(Ni1/2Ti1/2)O3 with multiferric high mechanical properties. The material has zero expanding characteristic at the temperature range of 25-525 DEG C, ferroelectric property, ferromagnetism and high mechanical properties; and preparation technology is simple, and equipment requirement is lower.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, in particular to a preparation method of a zero-expansion material with multiferroicity and high mechanical properties. Background technique [0002] Multiferroic materials refer to materials that have multiple orderly coexistences such as ferroelectricity and ferromagnetism at the same time. , has some new physical effects, which greatly broadens the application range of ferroic materials [1-3]. [0003] Zero-expansion materials have high research and practical application value, and the volume of such materials does not change or changes very slightly as the temperature changes. Because the volume of zero-expansion materials is less affected by temperature and has significant thermal shock resistance, this type of materials has broad application prospects from daily necessities to aerospace [4-6]. [0004] At present, multiferroic materials have become a research hotspot in var...

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 Applications(China)
IPC IPC(8): C04B35/622C04B35/453
Inventor 邢献然胡澎浩陈骏康华峻邓金侠
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap