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

Method for improving density of foam titanium

A foamed titanium and dense technology, applied in the field of foamed titanium materials, can solve the problems of increasing the difficulty of melt foaming, reducing ductility, and high melting point of titanium, improving microstructure and mechanical properties, increasing adaptability, and improving density. Effect

Inactive Publication Date: 2014-05-14
CHONGQING UNIV
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of foamed titanium is generally less liquid-formed (such as foamed aluminum), because on the one hand, due to the high melting point of titanium (close to 1670 ° C); on the other hand, due to the extreme chemical affinity of titanium with gases in the atmosphere (such as oxygen and nitrogen), these gases dissolve very quickly in liquid or solid titanium at temperatures above 400°C, which greatly reduces the ductility of titanium; in addition, titanium liquid also has a high reaction with most mold materials activity, further increasing the difficulty of melt foaming

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
  • Method for improving density of foam titanium
  • Method for improving density of foam titanium
  • Method for improving density of foam titanium

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment

[0021] (1) A method for increasing the density of foamed titanium. In the process of preparing foamed titanium by traditional powder metallurgy mixed element method, adding rare earth Er 2 o 3 powder, rare earth Er 2 o 3 The amount of addition is 0.25 wt% to 0.75 wt%. Specific examples are as follows:

[0022] With HDH titanium powder (purity ≥ 99%, particle size ≤ 50μm) and rare earth Er 2 o 3 Powder (purity≥99.95%, particle size≤10μm) is used as raw material, urea particles (particle size between 700-1000μm) are used as pore-forming agent, and titanium foam is prepared by traditional powder metallurgy mixed element method. The experiment is designed according to the porosity of 70%, the sample size is φ12mm×10 mm, the rare earth Er 2 o 3 The amount of powder added is set to 6 levels: 0, 0.25, 0.50, 0.75, 1.0, 2.0wt%, as shown in Table 1.

[0023] Table 1 Er2O3 content corresponding to different samples

[0024]

[0025] Such as figure 1 As shown, the main proces...

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
pore sizeaaaaaaaaaa
thicknessaaaaaaaaaa
yield strengthaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for improving density of foam titanium. In a process that the foam titanium is prepared by a traditional powder metallurgy blended elemental method, not more than 0.75wt% of rare earth Er2O3 powder is added, and the high-density foam titanium is obtained by means of raw material mixing, compression molding and desorption and vacuum sintering of pore-forming agents. The rare earth Er2O3 of an appropriate quantity is added, and a liquid phase is generated during sintering to improve the density of the materials, so that the quantity of microcosmic pores is effectively decreased to improve the density of the foam titanium, microstructures and mechanical properties of the foam titanium are further improved, and the technical problem unsolved for a long time is solved. The method is simple in technology and high in operability.

Description

technical field [0001] The invention relates to the technical field of foamed titanium materials, in particular to a method for increasing the density of foamed titanium. Background technique [0002] Porous material is a brand-new material system developed in the 20th century, and has become a new type of structural and functional material in the current material field. Compared with dense materials, porous materials have some unique properties due to the existence of pore structure, such as low relative density, high specific strength, large specific surface area, light weight, sound insulation, heat insulation, good permeability, etc., widely Used in aerospace, chemical industry, building materials, metallurgy and other fields. Titanium is a metal with excellent performance. It has the characteristics of high specific strength, light specific gravity, high temperature resistance, corrosion resistance and good biocompatibility. It is widely used in national defense, chemi...

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): C22C1/08C22C14/00
Inventor 邱贵宝肖健徐健陈华陈杰扈玫珑张生富
Owner CHONGQING UNIV
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