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Hydrogen permeation alloy material and preparation thereof

An alloy material and hydrogen permeable technology, which is applied in the field of hydrogen permeable alloy materials and its preparation, can solve the problems of impossibility and achieve the effect of excellent hydrogen permeability

Inactive Publication Date: 2011-06-15
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Vanadium group metals (tantalum, niobium, vanadium) have very high hydrogen permeability, but are severely embrittled and cannot be used for hydrogen separation

Method used

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  • Hydrogen permeation alloy material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: prepare Ti 26.9 co 25.0 Ta 47.8 Alloy (26.9mol% Ti, 25.0mol% Co, 47.8mol% Ta) material

[0022] The preparation method is as follows:

[0023] 1) Weigh 0.054mol of titanium (Ti) with a purity of 99%, 0.050mol of cobalt (Co) with a purity of 99.5% and 0.096mol of tantalum (Ta) with a purity of 99.5%, and the total mass of the metal raw materials is about 22.902 grams.

[0024] 2) Put the tantalum, titanium, and cobalt raw materials weighed above into a non-consumable vacuum electric arc furnace, and evacuate to 3×10 -3 Below Pa, fill with high-purity argon to 4×10 4 Pa, smelted into Ti 27 co 25 Ta 48 Alloy materials.

[0025] The alloy material includes 26.9mol% of titanium, 25.0mol% of cobalt and 47.8mol% of tantalum in molar percentage, the sum of the content of titanium, cobalt and tantalum is 99.7mol%, and the impurities include niobium (Nb), nickel (Ni) , Silver (Ag). The alloy consists of BCC-(Ta, Ti) solid solution and B2-TiCo metal compoun...

Embodiment 2

[0026] Embodiment 2: prepare Ti 28.5 co 26.9 Ta 43.6 Alloy (28.5mol% Ti, 26.9mol% Co, 43.6mol% Ta) material

[0027] The preparation method is as follows:

[0028] 1) Weigh 0.058mol of titanium (Ti) with a purity of 99%, 0.054mol of cobalt (Co) with a purity of 99.5% and 0.088mol of tantalum (Ta) with a purity of 99%, and the total mass of the metal raw materials is about 21.882 grams.

[0029] 2) Put the tantalum, titanium, and cobalt raw materials weighed above into a non-consumable vacuum electric arc furnace, and evacuate to 3×10 -3 Below Pa, fill with high-purity argon to 4×10 4 Pa, smelted into Ti 29 co 27 Ta 44 Alloy materials.

[0030] The alloy material includes 28.5mol% of titanium, 26.9mol% of cobalt and 43.6mol% of tantalum in molar percentage, the sum of the content of titanium, cobalt and tantalum is 99.0mol%, impurities include pickaxe (Zr), hafnium (Tf) , chromium (Cr), manganese (Mn). The alloy consists of BCC-(Ta, Ti) solid solution and B2-TiCo meta...

Embodiment 3

[0031] Embodiment 3: prepare Ti 28.9 co 30.1 Ta 39.0 Alloy (mole percent composition is 28.9mol% Ti, 30.1mol% Co, 39.0mol% Ta) material

[0032] The preparation method is as follows:

[0033] 1) Weigh 0.075mol of titanium (Ti) with a purity of 99%, 0.075mol of cobalt (Co) with a purity of 99.5% and 0.100mol of tantalum (Ta) with a purity of 99%, and the total mass of the metal raw materials is about 26.105 grams.

[0034] 2) Put the tantalum, titanium, and cobalt raw materials weighed above into a non-consumable vacuum electric arc furnace, and evacuate to 3×10 -3 Below Pa, fill with high-purity argon to 4×10 4 Pa, smelted into Ti 30 co 30 Ta 40 Alloy materials.

[0035] The alloy material includes 28.9mol% of titanium, 30.1mol% of cobalt and 39.0mol% of tantalum in molar percentage, the sum of the content of titanium, cobalt and tantalum is 98.0mol%, and the impurities include niobium (Nb), nickel (Ni) , copper (Cu), zinc (Zn), silver (Ag), silicon (Si). The alloy c...

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Abstract

The invention discloses a hydrogen permeating alloy material and a method for preparing the same, and the alloy comprises the following components by molar percentage: titanium of 23mol%-54mol%, cobalt of 21mol%-39mol% and tantalum, titanium, cobalt and tantalum of which the total content is of 98-100mol%.The manufacturing of the alloy material comprises steps of putting titanium, cobalt and tantalum with a purity of more than 99% into a non-consumable vacuum arc furnace, vacuumizing to a pressure below 3*10 3 Pa, filling in argon of high purity to a pressure of 4*10 Pa, and then smelting. The alloy material of the invention has the hydrogen permeability and excellent hydrogen brittleness resistance ability higher than pure palladium under 573-673K, while the cost of the alloy material isonly about 1 / 100 of that of the pure palladium, thus, the alloy material can be used for hydrogen gas isolation and purification, and can also be used for a catalytic-reformed compact membrane reactor and the like.

Description

technical field [0001] The invention relates to a hydrogen permeable alloy material and a preparation method thereof. Specifically, the invention relates to a titanium-cobalt-tantalum hydrogen-permeable alloy material obtained by compounding a tantalum-titanium solid solution and a titanium-cobalt metal compound and a preparation method thereof. technical background [0002] With the depletion of oil resources and the deterioration of the global climate, hydrogen energy and fuel cell technology are increasingly valued by countries all over the world. Elemental hydrogen does not exist in nature and needs to be produced by chemical methods such as electrolysis of water or catalytic reforming. On the one hand, the cost of producing hydrogen by electrolysis of water is too high. On the other hand, the above-mentioned process is to convert high-quality energy (electrical energy) into low-quality energy (chemical energy), which does not conform to the principle of energy utilizati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22C1/02
Inventor 罗伟民闫常峰胡蓉蓉
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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