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Platinum-tantalum-platinum three-layer composite screen and method for producing the same

A layer-composite and composite-layer technology is applied in the field of electrochemical anode materials and their preparation, which can solve the problems of weak bonding force between the coating and the base material, uneven coating, and porosity.

Inactive Publication Date: 2009-05-13
NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the same type of products at home and abroad are obtained by electroplating, surface deposition, coating and other technical methods, which are prone to problems such as uneven coating, porous, and weak bonding between the coating and the base material.

Method used

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  • Platinum-tantalum-platinum three-layer composite screen and method for producing the same
  • Platinum-tantalum-platinum three-layer composite screen and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Taking the platinum layer thickness of the finished net as 3 μm as an example, the size of the finished net requires the thickness of the platinum layer to be 3 μm, the thickness of the tantalum layer to be 0.2 mm, and the width of the net to be 30 mm.

[0017] Such as figure 1 and figure 2 As shown, the processing process is:

[0018] (1) Prepare the platinum plates 1 and 2, roll the platinum plates 1 and 2 into sheets with a thickness of 0.3 mm, and cut them into two sheets of 0.3×150×200 mm.

[0019] (2) A tantalum plate 3 with a size of 20×150×200mm.

[0020] (3) Explosive compounding, using the method of parallel end detonation to first compound a platinum plate 1 and a tantalum plate 3, after the surface is polished and smoothed, another platinum plate 2 and the primary compound plate 4 are compounded twice to form a secondary compound plate 5.

[0021] (4) The secondary clad plate 5 is rolled with a D550 type rolling mill, the processing rate of each pass is...

Embodiment 2

[0025] Taking the finished net platinum layer thickness of 10 μm as an example, the finished net size requires a platinum layer thickness of 10 μm, a tantalum layer thickness of 0.3 mm, and a net width of 50 mm.

[0026] Such as figure 1 and figure 2 As shown, the processing process is:

[0027] (1) Prepare the platinum plates 1 and 2, roll the platinum plates 1 and 2 into sheets with a thickness of 1.0 mm, and cut them into two sheets of 0.3×150×200 mm.

[0028] (2) A tantalum plate 3 with a size of 30×200×400mm.

[0029] (3) Explosive compounding, using the method of parallel end detonation to first compound a platinum plate 1 and a tantalum plate 3, after the surface is polished and smoothed, another platinum plate 2 and the primary compound plate 4 are compounded twice to form a secondary compound plate 5.

[0030] (4) The secondary clad plate 5 is rolled with a D550 type rolling mill, the processing rate of each pass is 10%-20%, the processing rate between two anneal...

Embodiment 3

[0034] Such as figure 1 and figure 2 As shown, taking the finished net platinum layer thickness of 0.1 mm as an example, the finished net size requires a platinum layer thickness of 0.1 mm, a tantalum layer thickness of 1 mm, and a net width of 50 mm.

[0035] The processing process is:

[0036] (1) Prepare the platinum plates 1 and 2, roll the platinum plates 1 and 2 into sheets with a thickness of 1.0 mm, and cut them into two sheets of 1.0×200×400 mm.

[0037] (2) A tantalum plate 3 with a size of 10×200×400 mm.

[0038] (3) Explosive compounding, using the method of parallel end detonation to first compound a platinum plate 1 and a tantalum plate 3, after the surface is polished and smoothed, another platinum plate 2 and the primary compound plate 4 are compounded twice to form a secondary compound plate 5.

[0039] (4) The secondary clad plate 5 is rolled with a D550 type rolling mill, the processing rate of each pass is 10%-20%, the processing rate between two annea...

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Abstract

The invention discloses a platinum-tantalum-platinum three-layer composite network which consists of three metal layers of platinum, tantalum and platinum. The tantalum layer serves as a substrate; the composite layers on the upper and lower surfaces of the substrate are platinum layers; the thickness of the tantalum layer is higher than that of each platinum layer; and the thickness of each platinum layer is 3mu m to 3mm. The invention also provides a method for preparing the composite network. The method adopts a two-time explosion cladding method to prepare composite blank, and then adopts the procedures of rolling, intermediate annealing, rolling, net rushing, cutting, and the like to process the platinum-tantalum-platinum three-layer composite network. The composite layer metal and the substrate metal are metallurgically integrated. The method processes the platinum-tantalum-platinum three-layer composite network through metallurgical processing; the composite layer and the substrate consist of compact metals without pores and holes and with tighter bonding. The composite layer metal elements and the substrate metal elements are interdiffused to achieve metallurgical integration. The platinum-tantalum-platinum three-layer composite network which has the electrochemical properties close to those of platinum is suitable for the long-time use in a corrosion environment. The service life of the platinum-tantalum-platinum three-layer composite network can be counted according to the dosage of platinum; and the platinum-tantalum-platinum three-layer composite network can serve as an ideal anode material.

Description

technical field [0001] The invention relates to an electrochemical anode material and a preparation method thereof, in particular to a platinum-tantalum-platinum three-layer composite network and a preparation method thereof. Background technique [0002] Platinum is the most chemically stable metal and the best anode material, while tantalum is the "valve" metal with the highest breakdown voltage. When it is anodically polarized in an aqueous environment, a The insulating oxide film plays the role of self-protection. When tantalum is covered with platinum, the exposed part will form a protective oxide film, and the anode electrochemical reaction only occurs on platinum. Due to the extremely stable chemical properties of platinum, the consumption is extremely low. In the corrosive environment containing chloride and sulfate, the cathodic protection of impressed current with platinum anode has the characteristics of high efficiency, high reliability and long life, and it is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23F13/16
Inventor 王轶柏文超马光李银娥贾志华郑晶
Owner NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH
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