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Preparation method of Nb-based amorphous alloy and stripe and hydrogen permeating metal film thereof

A technology of amorphous alloy and metal film, which is applied in the field of preparation of amorphous alloy and its strips and hydrogen permeable metal film, can solve the problems of high price of palladium, difficult large-scale industrial application, limited reserves, etc., and achieves improved hydrogen permeation. Effects on performance and thermal stability

Active Publication Date: 2013-01-02
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high price and limited reserves of palladium, it is difficult for large-scale industrial application

Method used

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  • Preparation method of Nb-based amorphous alloy and stripe and hydrogen permeating metal film thereof
  • Preparation method of Nb-based amorphous alloy and stripe and hydrogen permeating metal film thereof
  • Preparation method of Nb-based amorphous alloy and stripe and hydrogen permeating metal film thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Preparation of Nb 0.42 Ni 0.39 Co 0.15 Zr 0.04 Amorphous alloy

[0030] First, the raw materials with a purity of ≥99.9% are distributed according to the chemical composition ratio Nb 0.42 Ni a Co b Zr c M d Dosing is performed where a, b, c, d are atomic percent of each component, and a=0.39, b=0.15, c=0.04, d=0. Then it is repeatedly smelted in a vacuum arc furnace to obtain a master alloy with uniform composition. Better than 3×10 in vacuum -2 Under Pa vacuum conditions, the master alloy is placed in an induction furnace of a rapid solidification device to be melted to obtain a master alloy melt. The master alloy melt is sprayed onto the surface of the high-speed rotating copper roller, the surface linear velocity of the roller is about 20~40m / s, and the chemical composition of Nb is obtained by cooling. 0.42 Ni 0.39 Co 0.15 Zr 0.04 The Nb-based amorphous alloy strips were tested for their thermodynamic stability and hydrogen permeation prope...

Embodiment 2

[0034] Example 2: Preparation of Nb 42 Ni 40 Co 6 Zr 12 Amorphous alloy

[0035] First, the raw materials with a purity of ≥99.9% are distributed according to the chemical composition ratio Nb 0.42 Ni a Co b Zr c M d Dosing is performed where a, b, c, d are atomic percent of each component, and a=0.40, b=0.06, c=0.12, d=0. Then it is repeatedly smelted in a vacuum arc furnace to obtain a master alloy with uniform composition. Better than 3×10 in vacuum -2 Under Pa vacuum conditions, the master alloy is placed in an induction furnace of a rapid solidification device to be melted to obtain a master alloy melt. The master alloy melt is sprayed onto the surface of the high-speed rotating copper roller, the surface linear velocity of the roller is about 20~40m / s, and the chemical composition of Nb is obtained by cooling. 0.42 Ni 0.40 Co 0.06 Zr 0.12 The Nb-based amorphous alloy strips were tested for their thermodynamic stability and hydrogen permeation properties. T...

Embodiment 3

[0039] Example 3: Preparation of Nb 0.42 Ni 0.32 Co 0.06 Zr 0.12 Ta 0.08 Amorphous alloy

[0040] First, the raw materials with a purity of ≥99.9% are distributed according to the chemical composition ratio Nb 0.42 Ni a Co b Zr c M d Dosing is performed where M is Ta, a, b, c, d are atomic percent of each component, and a=0.32, b=0.06, c=0.12, d=0.08. Then it is repeatedly smelted in a vacuum arc furnace to obtain a master alloy with uniform composition. Better than 3×10 in vacuum -2 Under Pa vacuum conditions, the master alloy is placed in an induction furnace of a rapid solidification device to be melted to obtain a master alloy melt. The master alloy melt is sprayed onto the surface of the high-speed rotating copper roller, the surface linear velocity of the roller is about 20~40m / s, and the chemical composition of Nb is obtained by cooling. 0.42 Ni 0.32 Co 0.06 Zr 0.12 Ta 0.08 The Nb-based amorphous alloy strips were tested for their thermodynamic stability...

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Abstract

The invention provides a preparation method of an Nb-based amorphous alloy and a stripe and a hydrogen permeating metal film of the Nb-based amorphous alloy, According to the preparation method, the Nb-based amorphous alloy has the chemical formula as Nb0.42NiaCobZrcMd, wherein M=Ta, or Ti; a, b, c and d are respectively the atomic percentage of each component, wherein a is more than or equal to 0.30 and less than or equal to 0.40, b is more than or equal to 0.05 and less than or equal to 0.15, c is more than or equal to 0.04 and less than or equal to 0.02, d is more than or equal to 0 and less than or equal to 0.08, and the sum of a, b, c and d is equal to 0.58. With the adoption of the preparation method provided by the invention, the alloy components are further improved; the hydrogen permeating performance and thermal stability of the Nb-based amorphous alloy stripe and the hydrogen permeating metal film are improved; the Nb-based amorphous alloy capable of separating hydrogen and purifying is prepared, and the Nb-based amorphous alloy stripe and the hydrogen permeating metal film which have high performance of hydrogen permeating and are capable of separating and hydrogen and purifying can be obtained.

Description

technical field [0001] The present invention relates to a kind of amorphous alloy and its strip and preparation method of hydrogen permeable metal film, in particular to a kind of Nb-based amorphous alloy used for hydrogen separation and purification, its strip and hydrogen permeable metal film. Preparation. Background technique [0002] Due to the excessive dependence on fossil energy in today's society, it has led to well-known problems such as energy crisis and environmental pollution. The development of clean, efficient, non-polluting or less polluting new energy has become an issue faced by all countries. Hydrogen energy has attracted wide attention due to its abundant resources, excellent combustion performance, storability, cleanliness and pollution-free and many other advantages. It is an ideal clean energy in the future. In many application fields of hydrogen, such as semiconductor industry, fuel cells, etc., high purity of hydrogen is required, and a small amount ...

Claims

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Application Information

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IPC IPC(8): C22C45/10B22D11/06B32B15/01
Inventor 姚可夫丁红瑜
Owner TSINGHUA UNIV
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