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Method for preparing large-cube non-crystal alloy using electrochemical reduction method

A technology of amorphous alloy and reduction method, which is applied in the direction of electroforming, optics, electrolysis process, etc., can solve problems such as the difficulty of amorphous alloy, and achieve the effect of reducing preparation cost, preparation conditions and simple process

Inactive Publication Date: 2007-11-14
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, generally only amorphous strips and amorphous films can be obtained by using the above method, and a large cooling rate needs to be provided in the preparation process. Due to the limitation of process conditions, there are certain difficulties in obtaining a large amorphous alloy with a certain thickness. difficulty

Method used

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  • Method for preparing large-cube non-crystal alloy using electrochemical reduction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Prepare the electroforming solution, the solution is composed of:

[0055] NiSO 4 ·6H2O 300g / L

[0056] NiCl 2 ·6H 2 O 45g / L

[0057] Phosphorous acid 20g / L

[0058] Boric acid 40g / L

[0059] h 2 SO 4 A small amount (to adjust the pH value)

[0060] Electroforming process conditions are:

[0061] pH 1.1

[0062] Current density 10A / dm 2

[0063] Temperature 85°C

[0064] Put the cathode and anode passivated for 3 hours in the electroforming solution for electroforming for 8 hours, take it out after completion, clean the cast layer with water, and peel it off from the cathode to obtain an amorphous material with a size of 3cm×5cm×1.8mm Ni-P alloy bulk material.

Embodiment 2

[0066] Prepare the electroforming solution, the solution is composed of:

[0067] NiSO 4 ·6H 2 O 340g / L

[0068] Phosphorous acid 25g / L

[0069] Boric acid 45g / L

[0070] h 2 SO 4 A small amount (to adjust the pH value)

[0071] Electroforming process conditions are:

[0072]pH 1.2

[0073] Current density 10A / dm 2

[0074] Temperature 75°C

[0075] Put the cathode and anode passivated for 5 hours in the electroforming solution for 8 hours, take it out after completion, clean the casting layer with water, and peel it off from the cathode to obtain a non-conductive material with a size of 3cm×5cm×1.1mm Crystalline nickel phosphorus alloy bulk material.

Embodiment 3

[0077] Prepare the electroforming solution, the solution is composed of:

[0078] NiSO 4 ·6H 2 O 310g / L

[0079] NiCl 2 ·6H 2 O 35g / L

[0080] Phosphorous acid 28g / L

[0081] Boric acid 38g / L

[0082] h 2 S0 4 A small amount (to adjust the pH value)

[0083] Electroforming process conditions are:

[0084] pH 1.1

[0085] Current density 15A / dm 2

[0086] Temperature 65°C

[0087] Put the cathode and anode passivated for 5 hours in the electroforming solution for 8 hours, take it out after completion, clean the cast layer with water, and peel it off from the cathode to obtain a non-conductive material with a size of 3cm×5cm×1.0mm Crystalline nickel phosphorus alloy bulk material.

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Abstract

The invention relates to a method for preparing bulk non crystalline alloy by the reduction method of electrochemistry, and it relates to the preparing of bulk (size) nickel-phosphorus non crystalline alloy. The method adopts the reduction method of electrochemistry in the condition of normal temperature which is electrocasting, to dispense the suitable electrolytic casting fluid. Through the optimized craft condition, nickel and phosphorus are deposited together at the negative pole forming non crystalline alloy. The ingredient of non crystalline alloy is nickel-phosphorus alloy which contents 9-12 (mass%) phosphorus, and its thickness can reach 1.8mm. It has high the degree of hardness and the elastic modulus. Its degree of hardness is similar with the tool steel, which has reached 7GPa, and its elastic modulus has reached 150GPa. Its compression breakdown strength is 980MPa. Compared with the existing technology, the invention has the characteristic of preparing condition and its craft simple, it can greatly reduce the preparation cost of material.

Description

technical field [0001] The invention relates to a preparation method of bulk (size) amorphous alloy, in particular to a preparation method of nickel-phosphorus amorphous alloy. Background technique [0002] Bulk amorphous alloy is a kind of metallic glass material with much higher strength than ordinary metals and better flexibility and elasticity synthesized by modern metallurgical technology in recent years. It is the alloy liquid that does not crystallize during the cooling process. And a material formed by direct curing is more like a very viscous liquid than a solid on the microscopic scale. Because of its unique disordered structure, it has the characteristics of solid and liquid, metal and glass, and extraordinary excellent mechanical properties, physical and chemical properties. Therefore, seeking the technology to prepare bulk amorphous alloys has always been the goal pursued by scientists. [0003] According to the report of "Weapon Materials Science and Engineer...

Claims

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Application Information

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IPC IPC(8): C25D1/00C25C1/24
CPCY02P10/20
Inventor 俞宏英孙冬柏孟惠民王旭东樊自拴
Owner UNIV OF SCI & TECH BEIJING
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