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

Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material and preparation method thereof

A solid solution, titanium-zirconium-aluminum technology, which is applied in the field of ceramic solid solution materials and preparation, can solve the problems of rigidity, strength and other mechanical properties decline and limit wide application, and achieve the effects of shortening chemical reaction time, simple process and cost saving

Inactive Publication Date: 2010-09-08
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But as a structural material, Ti 3 SiC 2 and Ti 3 AlC 2 The hardness and ductile-brittle transition temperature are low. Above 1000°C, the mechanical properties such as rigidity and strength decline rapidly, which limits its wide application.

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
  • Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material and preparation method thereof
  • Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material and preparation method thereof
  • Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The particle size range of 200-400 mesh titanium powder 30.59 grams, hafnium powder 5.94 grams, silicon powder 7.01 grams, aluminum powder 0.30 grams and graphite 5.50 grams (stoichiometric ratio of (Ti 0.95 Hf 0.05 ) 3 (Si 0.95 Al 0.05 )C 2 ) Ball milled in alcohol medium for 10 hours, then placed in a graphite mold for cold pressing, the applied pressure is 5MPa, and the cold pressing time is 15 minutes; put it into a hot pressing furnace for hot pressing and sintering at a heating rate of 10°C / min, heating Keep the temperature at 1580°C for 1 hour while gradually increasing the pressure to 25MPa. Then the temperature was lowered to 1400°C, and the temperature was kept at 1400°C for 0.5 hours. The pressure during the whole heat preservation process was maintained at 25MPa. The entire sintering process is carried out under the protection of argon, and the obtained reaction product is analyzed by X-ray diffraction as (Ti 0.95 Hf 0.05 ) 3 (Si 0.95 Al 0.05 )C 2 ( figure 1 (...

Embodiment 2

[0029] The particle size range of 200-400 mesh titanium powder 50.98 grams, hafnium powder 10.10 grams, aluminum powder 10.50 grams and 8.50 grams of graphite (stoichiometric ratio is (Ti 0.95 Hf 0.05 ) 3 AlC 2 ) Ball milled in alcohol medium for 15 hours, then placed in a graphite mold for cold pressing, the applied pressure is 5 MPa, and the cold pressing time is 20 minutes; put it in a hot pressing furnace for hot pressing and sintering at a heating rate of 15°C / min, heating Keep the temperature at 1530°C for 1 hour while gradually increasing the pressure to 30MPa. Then the temperature was reduced to 1400°C, and the temperature was kept at 1400°C for 0.5 hours. The pressure during the whole heat preservation process was maintained at 30MPa. The entire sintering process is carried out under the protection of argon, and the obtained reaction product is analyzed by X-ray diffraction as (Ti 0.95 Hf 0.05 ) 3 AlC 2 ( figure 2 (a)). (Ti 0.95 Hf 0.05 ) 3 AlC 2 The Vickers hardness ...

Embodiment 3

[0031] The particle size range is 200-400 mesh titanium powder 89.79g, zirconium powder 9.10g, aluminum powder 18.63g and graphite 15.12g (stoichiometric ratio is (Ti 0.95 Zr 0.05 ) 3 AlC 2 ) Ball milled in an alcohol medium for 20 hours, then put into a graphite mold for cold pressing, the applied pressure is 15 MPa, and the cold pressing time is 5 minutes; put it into a hot pressing furnace for hot pressing and sintering at a heating rate of 10°C / min, heating Keep the temperature at 1550°C for 1 hour while gradually increasing the pressure to 35MPa. Then the temperature was lowered to 1400°C, and the temperature was kept at 1400°C for 0.5 hours. The pressure during the whole heat preservation process was maintained at 35MPa. The whole sintering process is carried out under the protection of argon, and the reaction product obtained is composed of lath grains (Ti 0.95 Zr 0.05 ) 3 AlC 2 ( image 3 ). (Ti 0.95 Zr 0.05 ) 3 AlC 2 The Vickers hardness of the solid solution 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
Vickers hardnessaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
Vickers hardnessaaaaaaaaaa
Login to View More

Abstract

The invention relates to a ceramic solid solution material and a preparation method thereof, in particular to a Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material and a preparation method thereof. The method adopts elemental powder to synthesize Ti-Hf-Si-Al-C (Ti1-xHfx)3(Si1-yAly)C2, Ti-Hf-Al-C (Ti1-xHfx)3AlC2 and Ti-Zr-Al-C solid solution (Ti1-xZrx)3AlC2 in situ, where the numeric area of x is more than 0 and less than or equal to 0.07, and the numeric area of y is more than 0 and less than or equal to 0.10. The method comprises the following steps: firstly, mixing titanium powder, hafnium powder, zirconium powder, silicon powder, aluminum powder and graphite powder which serve as raw materials by a physical mechanical method; filling the mixture in a graphite mold for cold press molding; sintering the mixture in a hot-pressing furnace in which protective atmosphere is introduced to obtain the Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material. In the invention, the Ti-Hf-Si-Al-C, Ti-Hf-Al-C and Ti-Zr-Al-C solid solution material with high purity, high compactness, high toughness, high hardness, good mechanical performance and other excellent comprehensive performances can be prepared at lower temperature and shorter time.

Description

Technical field [0001] The invention relates to a ceramic solid solution material and a preparation method, in particular to titanium hafnium silicon aluminum carbon (Ti 1-x Hf x ) 3 (Si 1-y Al y )C 2 , Titanium hafnium aluminum carbon (Ti 1-x Hf x ) 3 AlC 2 Or titanium zirconium aluminum carbon (Ti 1-x Zr x ) 3 AlC 2 Solid solution material and its preparation method. Background technique [0002] Ti 3 SiC 2 And Ti 3 AlC 2 They are two new types of ternary layered ceramic materials. The Journal of Progress in Solid State Chemistry (Prog.Solid State Chem.28(2000)201) points out that they combine the many advantages of ceramics and metals, with low density, high modulus, high strength, high electrical and thermal conductivity, and easy Processing and other characteristics, so it has broad application prospects. But as a structural material, Ti 3 SiC 2 And Ti 3 AlC 2 The hardness and toughness-to-brittle transition temperature of the product are relatively low. Above 1000℃, the me...

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
IPC IPC(8): C22C14/00C22C1/04
Inventor 周延春何灵峰包亦望
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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