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Spark plasma sintering (SPS) titanium-base composite and preparing method thereof

A composite material and powder technology, which is applied in the field of SPS sintered titanium-based composite materials and its preparation, can solve the problems of high cost and inability to improve oxidation resistance

Active Publication Date: 2020-07-07
JIANGSU UNIV
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve a series of problems such as the high cost of the existing titanium alloy modified raw materials and the inability to improve the oxidation resistance, and to invent a Ti-6Al-4Sn-9Zr- 1.21Nb-1.6Mo-0.3Si-xGNP composite material, and provide its preparation method at the same time, the preparation method provided is simple to operate and low in cost, and the obtained titanium-based composite material has excellent oxidation resistance

Method used

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  • Spark plasma sintering (SPS) titanium-base composite and preparing method thereof
  • Spark plasma sintering (SPS) titanium-base composite and preparing method thereof
  • Spark plasma sintering (SPS) titanium-base composite and preparing method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] Such as figure 1 shown.

[0030] A Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si-1GNP composite material based on high-energy ball milling-spark plasma sintering is prepared by the following method:

[0031] First, based on 30gTi-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si, prepare titanium alloy powder with a mass fraction of 1wt.% (0.3g) nano-GNP powder, mix 0.3g GNP and 200ml absolute ethanol Put it into a ball mill pot, put it into a full-range ball mill for wet milling, the ball mill parameters are set as 300:1 ball-to-material ratio, 150r / min speed, 30 min stop for 5 min, 6 h ball milling time, so that the nanometer GNP powder fully dispersed;

[0032]Next, pour the Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder into a ball mill jar, and continue wet milling with the dispersed graphene-ethanol solution, adjust the speed to 300r / min, and ball mill for 30 Min shut down for 5 minutes, and the time is 6h, so that the Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder and nano-GNP powder are fully mixed; ...

Embodiment 2

[0039] A Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si-2GNP composite material, prepared by the following method:

[0040] First, based on 30gTi-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si, prepare titanium alloy powder with a mass fraction of 2wt.% (0.6g) nano-GNP powder, mix 0.6g GNP and 300ml absolute ethanol Put it into a ball mill pot, put it into an all-round ball mill for wet milling, the ball mill parameters are set as 400:1 ball to material ratio, 200r / min speed, 30 min stop for 5min, 6.5h ball milling time, so that the nanometer GNP powder fully dispersed;

[0041] Next, pour the Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder into the ball mill tank, and continue to carry out wet grinding with the dispersed graphene-ethanol solution, adjust the rotating speed to 350r / min, and the time is 6h, making Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder and nano GNP powder fully mixed;

[0042] Then, put the mixed powder obtained after wet grinding into a vacuum drying oven, heat the drying oven to 60-80°C and...

Embodiment 3

[0048] A kind of Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si-3GNP is prepared by the following method:

[0049] First, on the basis of 30gTi-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si, a titanium alloy powder mass fraction of 3wt.% (0.9g) nano-GNP powder was prepared, and 0.9g GNP and 400ml absolute ethanol Put it into a ball mill pot, put it into an omnidirectional ball mill for wet milling, the ball milling parameters are set as 500:1 ball to material ratio, 250r / min rotating speed, 30 min stop for 5 min, 7 h ball milling time, so that the nanometer GNP powder fully dispersed;

[0050] Next, pour the Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder into the ball mill jar, and continue wet grinding with the dispersed graphene-ethanol solution, adjust the rotating speed to 400r / min, and the time is 6h, making Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder and nano GNP powder fully mixed;

[0051] Then, the mixed powder obtained after wet grinding was put into a vacuum drying oven, and the drying oven was heate...

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Abstract

The invention discloses a spark plasma sintering (SPS) titanium-base composite and a preparing method thereof. The SPS titanium-base composite is characterized by being prepared from Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder and GNP nanopowder through compounding and sintering; firstly, absolute ethyl alcohol is added for sufficiently dispersing the GNP nanopowder, so that the GNP powder is free ofagglomeration phenomenon in subsequent operation, then, Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder is added to be wet-ground and then dried to be dry-ground, powder with uniform granularity is obtainedafter being sieved to be dried again, and then the mixed powder is poured into a graphite mold for plasma sintering, so that Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si powder and the GNP nanopowder are further alloyed. The composite obtained through the method has excellent performance, and the component uniformity and inoxidizability of the material are greatly improved.

Description

technical field [0001] The invention relates to a composite material technology, especially a Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si-xGNP composite material with improved oxidation resistance and a preparation method thereof, specifically a method using The technology of Ti-6Al-4Sn-9Zr-1.21Nb-1.6Mo-0.3Si-xGNP composite material prepared by ball milling-spark plasma sintering technology. Background technique [0002] Titanium alloys and their composite materials have the characteristics of high strength, good corrosion resistance, and high heat resistance. They are mainly used in the production of aircraft engine compressor components, rockets, missiles, and structural parts of high-speed aircraft. Since the development of titanium matrix composites, reinforcement materials can be divided into two categories, continuous fiber reinforced titanium matrix composites and discontinuous fiber reinforced composites. Compared with discontinuously reinforced titanium-based composites, con...

Claims

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Application Information

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IPC IPC(8): C22C14/00B22F3/105C22C1/05C22C1/10B22F1/00
CPCB22F1/0003B22F3/105C22C1/05C22C14/00
Inventor 汝金明高国庆周玉华李建伟许晓静
Owner JIANGSU UNIV
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