Amorphous matrix composite material and preparation method thereof

A composite material and amorphous technology, applied in the field of new composite materials and their preparation, can solve the problems of non-wetting, difficulty in obtaining nano-oxide particles, large difference in specific gravity, etc., and achieve the effect of simple preparation process.

Inactive Publication Date: 2021-08-31
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the oxide ceramic phases are not wetted with the metal melt and have a large difference in specific gravity. It is difficult to be introduced into the alloy melt as a second phase during smelting, so it is difficult to obtain dispersed nano-oxide particles on the amorphous matrix, and Amorphous matrix composite material with good interfacial bonding

Method used

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  • Amorphous matrix composite material and preparation method thereof
  • Amorphous matrix composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1ZrO 2 Dispersed Cu-Zr Amorphous Matrix Composite (ETM=Zr)

[0023] Step 1. Preparation of Zr-O master alloy

[0024] Take Cu 50 Zr 50 30% volume fraction of ZrO distributed on the amorphous matrix 2 The precipitate is the target amorphous matrix composite material, and the atomic percentage content of the O component in the ETM-O master alloy is determined to be 35%, which is converted into a weight percentage. Using sponge Zr (>99%) and ZrO 2 (>99%) as raw material, weigh and prepare Zr-O master alloy. Mix the raw materials and place them in a water-cooled copper crucible of a non-consumable arc melting furnace, then evacuate to 10Pa, fill in an industrial pure Ar atmosphere of 0.01MPa for melting, and the working current of the arc melting is 100A; then put the alloy ingot up and down Flip over and repeat the smelting process for 3 times to obtain an intermediate alloy ingot with uniform composition. The weight loss rate of the alloy before and after sm...

Embodiment 2Z

[0028] Example 2ZrO 2 Dispersed Zr-Cu-Al Amorphous Matrix Composite (ETM=Zr)

[0029] Step 1. Preparation of Zr-O master alloy

[0030] Take Cu 35 Al 15 Zr 50 15% volume fraction ZrO distributed on the amorphous matrix 2 The precipitate is the target amorphous matrix composite material, and the atomic percentage content of the O component in the ETM-O master alloy is determined to be 20%, which is converted into a weight percentage. Using sponge Zr (>99%) and ZrO 2(>99%) as raw material, weigh and prepare Zr-O master alloy. Mix the raw materials and place them in a water-cooled copper crucible of a non-consumable arc melting furnace, then evacuate to 10Pa, fill in an industrial pure Ar atmosphere of 0.01MPa for melting, and the working current of the arc melting is 100A; then put the alloy ingot up and down Flipping, repeated smelting in this way for 3 times, to obtain an intermediate alloy ingot with uniform composition, the weight loss of the alloy before and after sm...

Embodiment 3

[0034] Example 3HfO 2 Dispersed Hf-Cu Amorphous Matrix Composite (ETM=Hf)

[0035] Step 1. Preparation of Hf-O master alloy

[0036] Take CuHf 2 10% volume fraction of HfO distributed on the amorphous substrate 2 The precipitate is the target amorphous matrix composite material, and the atomic percentage content of the O component in the master alloy of the ETM-O combination is determined to be 25%, which is converted into a weight percentage. Using sponge Hf (>99%) and HfO 2 (>99%) as the raw material, weigh and prepare the Hf-O master alloy. Mix the raw materials and place them in a water-cooled copper crucible of a non-consumable arc melting furnace, then evacuate to 10Pa, fill in an industrial pure Ar atmosphere of 0.01MPa for melting, and the working current of the arc melting is 100A; then put the alloy ingot up and down Flipping, repeated smelting in this way for 3 times, to obtain an intermediate alloy ingot with uniform composition, the weight loss rate of the al...

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Abstract

The invention discloses an amorphous matrix composite material and a preparation method thereof, and belongs to the technical field of new materials. The matrix of the amorphous matrix composite material is a Cu-ETM amorphous alloy; the Cu-ETM amorphous alloy comprises Cu and ETM (early transition metal) elements; the atomic percent chemical composition of the Cu-ETM amorphous alloy is Cu<100>--AlETM, wherein the value of a is more than or equal to 0 and less than or equal to 25, the value of b is more than or equal to 25 and less than or equal to 75, ETM is Zr<1-x-y>Hf<x>Ti<y>, the value of x is more than or equal to 0 and less than or equal to 1, and the value of y is more than or equal to 0 and less than 0.5. The preparation method of the amorphous matrix composite material comprises the following steps: firstly, preparing an ETM-O intermediate alloy; secondly, determining the chemical composition of the whole composite material with the aim that a Cu<100>--AlETM amorphous matrix contains ETMO<2> oxide precipitates with different volume fractions, preparing alloy raw materials with the ETM-O intermediate alloy, industrial pure ETM, Cu and Al as raw materials, and obtaining alloy ingots with uniform components through a non-consumable electric arc melting method; and finally, regulating and controlling nucleation and growth kinetics of an oxide precipitated phase by changing a cooling speed range by utilizing a melt rapid quenching and copper mold suction casting technology, so as to finally obtain the amorphous matrix composite material. Nanometer oxide particles with different densities and sizes are dispersed and distributed on the obtained amorphous matrix composite material, and the precipitate / matrix interface bonding is good.

Description

technical field [0001] The invention belongs to the technical field of new materials, and relates to a novel composite material in which the matrix is ​​an amorphous alloy in which oxide particles are uniformly and dispersedly distributed and a preparation method thereof. Background technique [0002] Amorphous alloys are special alloys with long-range disorder and short-range order in structure. They usually have unique properties that crystalline alloys cannot match, such as high strength, high elasticity and high corrosion resistance. This kind of material has shown great application potential in civil and military industries, and has attracted the attention of various countries. The United States, Japan and other countries have carried out research on the practical application of amorphous alloys and their composite materials earlier, and have a large number of patents related to amorphous alloys. In comparison, there are few amorphous materials with independent intelle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00C22C1/03C22C1/10
CPCC22C45/001C22C1/1036C22C1/11
Inventor 王英敏羌建兵朱颉潘伟通张骏峰
Owner DALIAN UNIV OF TECH
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