Unlock instant, AI-driven research and patent intelligence for your innovation.

Alloy method for obtaining amorphous layer or crystalline and amorphous composite layer on the surface of crystalline alloy by using pulsed arc

A pulsed arc, composite layer technology, applied in electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of high overpotential and Tafel slope, low oxygen evolution catalytic activity, etc.

Inactive Publication Date: 2017-09-29
BEIHANG UNIV
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the problems of overpotential and high Tafel slope in the working process of the crystalline alloy electrode, the catalytic activity of the anode for oxygen evolution is often low.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Alloy method for obtaining amorphous layer or crystalline and amorphous composite layer on the surface of crystalline alloy by using pulsed arc
  • Alloy method for obtaining amorphous layer or crystalline and amorphous composite layer on the surface of crystalline alloy by using pulsed arc
  • Alloy method for obtaining amorphous layer or crystalline and amorphous composite layer on the surface of crystalline alloy by using pulsed arc

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Example 1, a crystalline and amorphous composite layer is prepared on the surface of a crystalline alloy substrate.

[0052] Step 1: Ingredients;

[0053] According to the target composition [(Fe 0.5 co 0.5 ) 0.75 B 0.2 Si 0.05 ] 96 Nb 4 Weigh Fe, Co, Si and Nb metal elements and FeB pre-alloy, and mix them uniformly to obtain smelting raw materials;

[0054] In the present invention, the mass percentage purity of each element of Zr, Al, Ni and Cu is not lower than 99.0%. The mass fraction of B in the FeB prealloy is 20.8%.

[0055] Step 2: melting the crystalline alloy;

[0056] Smelting the smelting raw material in step 1 in an electric arc smelting equipment for 5 times, and taking out the alloy after cooling with the furnace, to prepare a crystalline alloy ingot;

[0057] Melting vacuum degree is 8×10 -3 Pa;

[0058] The protective atmosphere for smelting is high-purity argon with a purity of 99.999%;

[0059] Melting temperature 2000℃;

[0060] Step 3: ...

Embodiment 2

[0076] Embodiment 2, making an amorphous alloy layer on the surface of the crystalline alloy.

[0077] Step 1: Ingredients;

[0078] According to the target component Zr 55 Al 10 Ni 5 Cu 30 Crystalline alloys weigh Zr, Al, Ni and Cu metal elements, and mix them uniformly to obtain smelting raw materials;

[0079] In the present invention, the mass percentage purity of each element of Zr, Al, Ni and Cu is not lower than 99.0%.

[0080] Step 2: melting the crystalline alloy;

[0081] Melting the smelting raw material in step 1 in an electric arc smelting equipment for 4 times, and taking out the alloy after cooling with the furnace, to prepare a crystalline alloy ingot;

[0082] Melting vacuum is 1×10 -2 Pa;

[0083] The protective atmosphere for smelting is high-purity argon with a purity of 99.999%;

[0084] Melting temperature 1800℃;

[0085] Step 3: surface treatment of crystalline alloy by pulsed arc;

[0086] Cut the crystalline alloy ingot into 1×1×1 cm samples...

Embodiment 3

[0100] Embodiment 3, making a composite layer of crystalline and amorphous alloy on the surface of crystalline alloy.

[0101] Step 1: Ingredients;

[0102] According to the target composition Ti 45.5 Zr 6.5 Cu 39.9 Ni 5.1 sn 2 Si 1 Crystalline alloys weigh Ti, Zr, Cu, Ni, Sn and Si metal elements, and mix them uniformly to obtain smelting raw materials;

[0103] In the present invention, the mass percentage purity of each element of Ti, Zr, Cu, Ni, Sn and Si is not less than 99.0%.

[0104] Step 2: melting the crystalline alloy;

[0105] Melting the smelting raw material in step 1 in an electric arc smelting equipment for 4 times, and taking out the alloy after cooling with the furnace, to prepare a crystalline alloy ingot;

[0106] Melting vacuum is 1×10 -2 Pa;

[0107] The protective atmosphere for smelting is high-purity argon with a purity of 99.999%;

[0108] Melting temperature 2000℃;

[0109] Step 3: surface treatment of crystalline alloy by pulsed arc;

[0...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to View More

Abstract

The invention discloses an alloying method for obtaining an amorphous-layer or a crystalline-state and amorphous composite layer on a crystalline-state alloy surface by adopting pulsed arcs. A crystalline-state alloy matrix surface is instantaneously molten by applying pulsed arcs, and rapid solidification is realized under cooling of a cooling medium and a crystalline-state alloy matrix, so that the amorphous-layer or the crystalline-state and amorphous composite layer is obtained on the crystalline-state alloy surface. Compared with a conventional crystalline-state alloy, a crystalline-state alloy with the amorphous-layer or the crystalline-state and amorphous composite layer is prepared into an anode oxygen evolution electrode for electrolyzed water, so that oxygen evolution catalytic activity is better.

Description

technical field [0001] The invention belongs to the technical field of metal processing, and specifically discloses an alloy method for obtaining an amorphous layer or a composite layer of a crystal state and an amorphous state on the surface of a crystalline state alloy substrate by pulse electric arc treatment. Background technique [0002] Arc is a gas discharge phenomenon, the instantaneous spark generated by the current passing through some insulating medium (such as air). The arc is a self-sustaining gas that conducts electricity, and most of its carriers are electrons generated by an electron emission. According to the type of current, the arc can be divided into three types: DC arc, AC arc and pulse arc. Among them, the pulsed arc is an arc that supplies current in a pulsed manner. [0003] Crystalline alloy is a general term for a class of metal alloys whose atomic arrangement has three-dimensional periodic structure characteristics. Generally, the alloy material...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/00C22F1/18C25B11/04C25B1/04
CPCC22F1/00C22F1/08C22F1/10C22F1/186C25B1/04C25B11/051Y02E60/36
Inventor 张涛左磊
Owner BEIHANG UNIV