Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of titanium diboride composite material

A composite material, titanium diboride technology, applied in the field of materials, can solve the problems of weakening the application range of materials, coarse crystal grains of multiphase ceramics, low physical and mechanical performance indicators, etc., and achieves good application prospects, simple preparation methods, and material properties. superior effect

Inactive Publication Date: 2018-03-09
迟述义
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] TiB 2 It has the characteristics of high melting point, low density, high hardness, high fracture toughness, stable chemical properties, relatively inert, good oxidation resistance, but poor sinterability, brittleness in performance, and limited application
[0003] To increase TiB 2 The sintering properties of materials, researchers have chosen different sintering aids, recently in TiB 2 Various ceramic powders are introduced into the matrix to prepare various TiB 2 Composite ceramics; its series are mainly TiB 2 -SiC, TiC-TiB 2 , TiB 2 -NbC-SiC, etc.; using hot pressing or hot isostatic pressing after high temperature (2000°C) sintering, the grains of the composite ceramics are coarse (about 40 μm), which is easy to cause microscopic cracks, which greatly reduces the material properties , the physical and mechanical properties are not high, and the shape of the product is greatly restricted by hot pressing and hot isostatic pressing, which weakens the TiB 2 Application range of materials

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] SiC powder, TiO 2 Powder, B 4 C powder, carbon powder and epoxy resin are mixed, the mixing ratio is SiC powder accounting for 25% by weight, and the rest is TiO 2 Powder, B 4 C powder, carbon powder and epoxy resin, by weight C element in carbon powder and epoxy resin: B 4 C powder: TiO 2 Powder=1:1.2:3;

[0019] Put the mixed material into a ball mill, add acetone as the ball milling medium for ball milling for at least 5 hours, dry the ball milled material, and prepare particles with a particle size of 24 to 80 mesh;

[0020] The particles are pressed into billets under the condition of 100 MPa, and the obtained billets are heated to 1350±20°C at a speed of 15~20°C / min under vacuum conditions, and kept for 1h; The temperature was raised to 1850±10°C at a certain speed, and the heat preservation and sintering was carried out for 2 hours to obtain a titanium diboride composite material.

Embodiment 2

[0022] SiC powder, TiO 2 Powder, B 4 C powder, carbon powder, TiB 2 Powder and epoxy resin are mixed, and the mixing ratio is 31% for SiC powder and 31% for TiB 2 Powder accounts for 8%, and the rest is TiO 2 Powder, B 4 C powder, carbon powder and epoxy resin, by weight C element in carbon powder and epoxy resin: B 4 C powder: TiO 2 Powder=1:1.3:4;

[0023] Put the mixed material into a ball mill, add acetone as the ball milling medium for ball milling for at least 5 hours, dry the ball milled material, and prepare particles with a particle size of 24 to 80 mesh;

[0024] The particles were pressed into billets under the condition of 150 MPa, and the obtained billets were heated to 1350±20°C at a speed of 15~20°C / min under vacuum conditions, and kept for 2 hours; The temperature was raised to 1850±10°C at a certain speed, and the heat preservation and sintering was carried out for 2.5 hours to obtain a titanium diboride composite material.

Embodiment 3

[0026] SiC powder, TiO 2 Powder, B 4 C powder, carbon powder, TiB 2 Powder and epoxy resin are mixed, and the mixing ratio is 37% for SiC powder and 37% for TiB 2 Powder accounts for 15%, and the rest is TiO 2 Powder, B 4 C powder, carbon powder and epoxy resin, by weight C element in carbon powder and epoxy resin: B 4 C powder: TiO 2 Powder=1:1.4:5;

[0027] Put the mixed material into a ball mill, add acetone as the ball milling medium for ball milling for at least 5 hours, dry the ball milled material, and prepare particles with a particle size of 24 to 80 mesh;

[0028] The particles were pressed into billets under the condition of 200 MPa, and the obtained billets were heated to 1350±20°C at a speed of 15~20°C / min under vacuum conditions, and kept for 3 hours; The temperature was raised to 1850±10°C at a certain speed, and the heat preservation and sintering was carried out for 3 hours to obtain a titanium diboride composite material.

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

A preparation method of a titanium diboride composite material comprises: (1) mixing SiC powder, TiO2 powder, B4C powder, carbon powder, and TiB2 power with a resin binder; (2) putting the obtained mixture in a ball mill, and adding an organic solvent as a ball milling medium for ball milling; and (3) compacting the obtained product to obtain a blank material, raising the temperature to 1350+ / -20DEG C in a vacuum condition, performing thermal insulation, raising the temperature to 1850+ / -10 DEG C in an inert atmosphere, and performing thermal insulation sintering. TiB2 is introduced in the raw materials of the titanium diboride compact composite material, so that the problem TiB2 is generated due to probable halfway reaction of raw materials is overcome. The preparation method is simple,performance of the obtained composite material is excellent, and the composite material has bright prospects.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a preparation method of a titanium diboride composite material. Background technique [0002] TiB 2 It has the characteristics of high melting point, low density, high hardness, high fracture toughness, stable chemical properties, relatively inert, good oxidation resistance, but poor sinterability, brittleness in performance, and limited application. [0003] To increase TiB 2 The sintering properties of materials, researchers have chosen different sintering aids, recently in TiB 2 Various ceramic powders are introduced into the matrix to prepare various TiB 2 Composite ceramics; its series are mainly TiB 2 -SiC, TiC-TiB 2 , TiB 2 -NbC-SiC, etc.; using hot pressing or hot isostatic pressing after high temperature (2000°C) sintering, the grains of the composite ceramics are coarse (about 40 μm), which is easy to cause microscopic cracks, which greatly reduces t...

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): C04B35/58C04B35/64
CPCC04B35/58071C04B35/64C04B2235/6562C04B2235/6567C04B2235/661
Inventor 迟述义
Owner 迟述义
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com