A kind of method for electrodepositing rhenium metal

A technology of electrodeposition and metal, applied in the direction of electrodes, electrolytic components, electrolytic process, etc., can solve the problems of cumbersome process, single method, low efficiency, etc., and achieve the effect of simple process, simplified process flow and improved production efficiency

Active Publication Date: 2021-02-26
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the current domestic methods for preparing rhenium metal, which are relatively simple, and are usually carried out by chemical reduction, and the preparation process requires artificial control of the reaction and the process is cumbersome and inefficient. The present invention provides a method for electrodepositing rhenium metal. The main purpose is to achieve high-efficiency preparation of rhenium metal, and to realize the integration of the two steps of preparation of rhenium metal and processing metal workpieces with it, and improve the efficiency of industrial production and processing

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  • A kind of method for electrodepositing rhenium metal

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Effect test

Embodiment 1

[0044] A method for electrodepositing metal rhenium, said method comprising the following steps:

[0045] 1) Choose a 1cm×1cm copper sheet as the metal workpiece, and use 400#, 600# and 800# sandpaper to polish the metal workpiece until the surface is smooth, then use alumina polishing agent to polish the metal workpiece, and wash it with water after polishing , placed in an ethanol solution for ultrasonic vibration for 5 minutes, then washed with water and dried at 40°C to obtain a bright metal workpiece;

[0046]2) Place the bright metal workpiece obtained by step 1) in the electrolyte, use the metal workpiece as the cathode, and use the platinum electrode as the anode to conduct electrodeposition. The electrodeposition is carried out at 60°C, and the current density is controlled at 15mA / cm 2 , the electrodeposition time is 5h, and a rhenium metal layer is obtained on the surface of the metal workpiece after the electrodeposition is completed;

[0047] Wherein, in the el...

Embodiment 2

[0049] A method for electrodepositing metal rhenium, said method comprising the following steps:

[0050] 1) Select a 6cm×8cm copper sheet as the metal workpiece, and use 400#, 600# and 800# sandpaper to polish the metal workpiece until the surface is smooth, then use alumina polishing agent to polish the metal workpiece, and wash it with water after polishing , placed in an ethanol solution for ultrasonic vibration for 15 minutes, then washed with water and then dried at 60°C to obtain a bright metal workpiece;

[0051] 2) Place the bright metal workpiece obtained through step 1) in the electrolyte, use the metal workpiece as the cathode, and use the ruthenium-titanium electrode as the anode to conduct electrodeposition. The electrodeposition is carried out at 70° C., and the current density is controlled to be 15mA / cm 2 , the electrodeposition time is 6h, and a rhenium metal layer is obtained on the surface of the metal workpiece after the electrodeposition is completed;

...

Embodiment 3

[0054] A method for electrodepositing metal rhenium, said method comprising the following steps:

[0055] 1) Select a 6cm×8cm nickel sheet as the metal workpiece, and use 400#, 600# and 800# sandpaper to polish the metal workpiece until the surface is smooth, then use alumina polishing agent to polish the metal workpiece, and wash it with water after polishing , placed in an ethanol solution for ultrasonic vibration for 10 minutes, then washed with water and dried at 60°C to obtain a bright metal workpiece;

[0056] 2) Place the bright metal workpiece obtained by step 1) in the electrolyte, use the metal workpiece as the cathode, and use the graphite electrode as the anode to conduct electrodeposition. The electrodeposition is carried out at 70°C, and the current density is controlled at 15mA / cm 2 , the electrodeposition time is 10h, and a rhenium metal layer is obtained on the surface of the metal workpiece after the electrodeposition is completed;

[0057] Wherein, in the...

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Abstract

The invention discloses a method for electrodepositing metal rhenium. The method is as follows: smoothing a metal workpiece with sandpaper, and then using Al 2 o 3 The polishing agent polishes the copper sheet, washes it with water, carries out ultrasonic treatment with ethanol solution, washes it with deionized water, and weighs it after drying with hot air. Electrodeposition is carried out in an aqueous solution at 20-80°C with a metal workpiece as the cathode and a platinum electrode or graphite electrode as the anode, with a current density of 10-40mA / cm 2 , the electrodeposition time is 2 to 12 hours, after the electrodeposited metal workpiece is cleaned with deionized water, dried and weighed; the electrodeposition technology of the present invention is designed for the preparation process of metal rhenium, and has the advantages of low cost, simple equipment, and low energy consumption. Small, non-toxic electrolyte, high product purity and other advantages, has a strong application prospect.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a method for electrodepositing metal rhenium. Background technique [0002] Rhenium and rhenium alloys have become indispensable materials in the aerospace industry due to their special properties such as high melting point, high strength, good plasticity and excellent mechanical stability. The rhenium content of single crystal superalloys is the "intergenerational mark" of aero-engine materials. For example, the rhenium content of the fourth-generation single crystal superalloy blades reaches 4.5-6%. The right medicine. [0003] However, as an extremely important strategic metal, rhenium is extremely rare in the earth's crust. In particular, the world's largest rhenium producer, Molybdenum Metals Corporation of the United States, monopolizes most of the rhenium in Chile, Mexico, and Kazakhstan in the form of long-term contracts. The United States retains production technology, a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C1/22C25C7/02C25C7/06
CPCC25C1/22C25C7/02C25C7/06
Inventor 曹华珍郑国渠张惠斌柴大淦
Owner ZHEJIANG UNIV OF TECH
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