Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

A method for preparing ti2sc ceramics by pressureless sintering

A technology of ceramics and ceramic materials, which is applied in the field of preparation of ternary layered compound ceramics, can solve the problem of high synthesis temperature, and achieve the effects of short preparation time, convenient operation and shortened reaction time

Inactive Publication Date: 2018-04-27
HENAN UNIVERSITY OF TECHNOLOGY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the current synthesis of Ti 2 The method of SC bulk material is mainly the method of hot pressing sintering, the synthesis temperature of this method is high (high temperature of nearly 1600°C), and the synthesis time is very long and takes several hours
Moreover, there are certain limitations in size and shape

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

[0014] Ti 2 SC ceramic powder and polyvinyl alcohol PVA are mixed evenly at a mass ratio of 100:0.5, and then put into a mold to preform at 1MPa, and hold the pressure for 2 minutes. Preformed Ti 2 SC ceramics are loaded into rubber molds and subjected to cold isostatic pressing with a pressure of 100MPa. Ti after cold isostatic pressing 2 Ti 2 SC ceramic block.

[0015] Using the above process, Ti with a density of 75% is finally obtained 2 SC ceramic block.

Embodiment 2

[0017] Ti 2 SC ceramic powder and polyvinyl alcohol PVA are mixed evenly at a mass ratio of 100:2, and then put into a mold to preform at 5MPa, and hold the pressure for 5 minutes. Preformed Ti 2 SC ceramics are loaded into rubber molds and subjected to cold isostatic pressing at a pressure of 150MPa. Ti after cold isostatic pressing 2 Ti 2 SC ceramic block.

[0018] Ti with a density of 88% is finally obtained by using the above process 2 SC ceramic block.

Embodiment 3

[0020] Ti 2 SC ceramic powder and polyvinyl alcohol PVA are mixed evenly at a mass ratio of 100:5, and then put into a mold to preform at 6MPa, and hold the pressure for 5 minutes. Preformed Ti 2 SC ceramics are loaded into rubber molds and subjected to cold isostatic pressing at a pressure of 280MPa. Ti after cold isostatic pressing 2 SC ceramics were microwave heated to 1100°C under the protection of inert gas for 60 minutes to obtain Ti 2 SC ceramic block.

[0021] Using the above process, Ti with a density of 98% is finally obtained 2 SC ceramic block.

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
Vickers hardnessaaaaaaaaaa
Login to View More

Abstract

A pressureless sintering preparation method of Ti2SC ceramic is characterized by comprising the following steps: (1) evenly mixing Ti2SC ceramic powder with polyvinyl alcohol PVA, and then filling into a die for preforming; (2) performing cold isostatic pressing treatment on the preformed Ti2SC ceramic; (3) putting the cold isostatic pressing treated Ti2SC ceramic into a microwave sintering furnace filled with inert gas protective atmosphere for sintering for 20-60 minutes at 800-1100 DEG C to obtain the Ti2SC bulk ceramic; the preparation method not only improves the density of the ceramic material, realizes the controllable density of the Ti2SC ceramic material, can prepare Ti2SC ceramic materials with complex shapes, and has the advantages of low sintering temperature, short time, saving energy and the like.

Description

technical field [0001] The invention provides a method for preparing ternary layered compound ceramics, in particular to a pressureless sintering process for preparing Ti 2 SC ceramic block material. Background technique [0002] Ti 2 SC is M n+1 AX n (n=1,2,3) A member of the "211" phase family in ternary layered compounds, it belongs to the hexagonal crystal system, it has excellent high thermal conductivity and high electrical conductivity similar to metals, and has better corrosion resistance performance. At the same time Ti 2 SC also has the high strength of ceramics and good high temperature oxidation resistance. Therefore, Ti 2 As a high-temperature anti-oxidation and corrosion-resistant ceramic component and protective coating, SC has broad application prospects in aerospace, nuclear industry, transportation, petrochemical and metallurgy and other fields. In the whole MAX phase family Ti 2 SC has the characteristic of the smallest lattice constant c, which m...

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): C04B35/547C04B35/622
Inventor 关春龙王顺卢新坡田野李金玲秦越孙纳纳李文凤赵志伟
Owner HENAN UNIVERSITY OF TECHNOLOGY
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
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