Method for compounding and preparing high-elastic-modulus Ti-based material based on nano ceramic particles

A nano-ceramic particle, high-elasticity technology, applied in the field of TNZS alloys, to achieve the effect of simple operation, easy implementation and high elastic modulus

Active Publication Date: 2016-01-27
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

As far as the applicant knows, there is no powder metallurgy method to prepare 5wt.%TiO 2 / TNZS and 5wt.%HA / TNZS Titanium-Based Materials Report

Method used

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  • Method for compounding and preparing high-elastic-modulus Ti-based material based on nano ceramic particles
  • Method for compounding and preparing high-elastic-modulus Ti-based material based on nano ceramic particles
  • Method for compounding and preparing high-elastic-modulus Ti-based material based on nano ceramic particles

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Experimental program
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Effect test

Embodiment 1

[0035] A kind of preparation method of high elastic modulus 5wt.%TiO2 / TNZS titanium base material, comprises the following steps:

[0036] 1. Two times of high-energy ball milling mixed powder preparation: first prepare Ti-24Nb-4Zr-7.9Sn (TNZS) mixed powder, the mass percentage of each component is Ti powder: 64.1%, Nb powder: 24%, Zr powder: 4 %, Sn powder: 7.9%, after the first high-energy ball mill (planetary ball mill, ball-to-material ratio 10:1, 300r / min ball mill for 48h, ball mill 1h stop for 15min), then add TiO 2 Nano-powder (particle size 40nm), prepared with a mass fraction of 5% TiO 2 / TNZS mixed powder, continue high-energy ball milling (300r / min ball milling for 1h), dry in a vacuum oven, and sieve.

[0037] 2. Conventional die-pressing method: Press the mixed powder prepared in step 1 on the YB32-100 hydraulic press manufactured by Nantong Forging Equipment Factory (compression pressure is 18Mpa, hold pressure for 5min), and the required compact (diameter is 3...

Embodiment 2

[0041] A preparation method of high elastic modulus 5wt.%HA / TNZS titanium-based material:

[0042] The present embodiment is similar to embodiment 1, and the difference is that the mass fraction is 5% TiO 2 The powder was replaced with 5wt.% HA nanopowder.

[0043] The mechanical alloying phenomenon of the 5wt.%HA / TNZS mixed powder prepared by the above steps is obvious, and SrilankiteTiO is detected in the XRD spectrum of the powder 2 The existence of, as well as RutileTiO2 and AnataseTiO 2 ( figure 1 , 3 shown); the particles appear to be agglomerated and cold welded, which makes the difficulty of powder refinement intensified and finally tends to a stable ellipsoidal structure; the particles are refined by crushing, extrusion and mechanical grinding, and the size is obvious reduced, the maximum particle size does not exceed 35 μm (eg Figure 4 shown in c); in addition to α-Ti, β-Ti and HA, Ti was also detected in the 5wt.%HA / TNZS titanium-based material prepared by the...

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Abstract

The invention relates to a TNZS alloy and particularly relates to a method for compounding and preparing high-elastic-modulus Ti-based material based on nano ceramic particles. The method comprises the following steps: firstly taking Ti, Nb, Zr, Sn, TiO2 and HA powder as raw material, carrying out high-energy ball milling twice to prepare mixed powder; then carrying out normal die pressing treatment on the mixed powder; and finally vacuum sintering pressed blocks obtained by die pressing without pressure to obtain uniform-surface-component and high-elastic-modulus Ti-based material containing 5wt% of TiO2/TNZS and 5wt% of HA/TNZS. As a preparation method of the Ti-based material, the problem with insufficient elastic modulus of the TNZS alloy can be effectively solved; the preparation process is simple; the application range of the titanium material in the fields of aerospace, traffic transportation and weapon equipment is expanded.

Description

technical field [0001] The present invention relates to TNZS alloy, especially the method for preparing Ti-based materials with high elastic modulus based on the composite preparation of nano-ceramic particles, [0002] Specifically, a high elastic modulus 5wt.%TiO 2 / TNZS and 5wt.%HA / TNZS preparation method of titanium-based materials. Background technique [0003] Ti-24Nb-4Zr-7.9Sn (TNZS) alloy has excellent comprehensive properties, but its elastic modulus is low, which cannot meet the requirements of aerospace and weaponry fields, and the addition of Nb and Zr elements makes the preparation technology of the alloy put forward Higher requirements limit its wide application in aerospace, transportation and weaponry; therefore, more in-depth research is required on TNZS alloy, a new generation of β-type titanium alloy, and TiO 2 And HA titanium-based materials can greatly enhance the elastic modulus of the titanium surface; high-energy ball milling, also known as mechanic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C1/05C22C14/00C22C32/00
Inventor 许晓静吴刘军朱利华陈婷卓
Owner JIANGSU UNIV
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