Electrochemical deoxidization method for refining titanium and titanium alloy solution

A titanium alloy, electrochemical technology, applied in the field of electrochemical deoxidation, can solve problems affecting the performance of the alloy

Active Publication Date: 2013-02-27
SHANGHAI UNIV +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] The purpose of remelting in the metallurgical process is to produce dense, defect-free, uniform ingots with the required chemical composition, size and grain structure, but this process al

Method used

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  • Electrochemical deoxidization method for refining titanium and titanium alloy solution
  • Electrochemical deoxidization method for refining titanium and titanium alloy solution
  • Electrochemical deoxidization method for refining titanium and titanium alloy solution

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specific Embodiment

[0013] Now the specific embodiment of the present invention is described as follows

Embodiment

[0015] will be like figure 1 The electrochemical deoxidation device shown is placed in a conventional general-purpose vacuum high-temperature furnace, and the temperature is raised slowly while the vacuum is continuously pumped. When the temperature rises to 1000°C, the vacuum pumping is stopped, and the furnace is backfilled with high-purity argon to 10 -2 Pa, and then continue to heat up to 1400 ° C. Then, an adjustable DC power supply was used to load a constant DC voltage of 2.8V between the cathode and the anode, electrolyze at a voltage of 2.8V, and record the loop current. As the electrolysis proceeds, the electrolysis current gradually decreases. When the electrolysis reaches 3.5 hours, the current suddenly decreases to almost 0, and the titanium alloy sample is completed. The oxygen content in the electrochemical deoxidation process of the titanium alloy is very low, and there is no longer O 2- Migration generates electric current. After electrolysis, cool to room t...

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Abstract

The invention discloses an electrochemical deoxidization method for refining a titanium and titanium alloy solution, belonging to the technical field of metallurgical refining processes. The electrochemical deoxidization method is characterized in that an yttrium oxide crucible is used as a reaction vessel, a graphite rod is used as a cathode, and a carbon saturated copper solution in an yttrium oxide stabilized zirconium oxide pipe is used an anode, wherein the self-made yttrium oxide stabilized zirconium oxide pipe is used as a solid oxygen permeable membrane. The self-made yttrium oxide crucible is arranged in a graphite crucible with a cover, insulating corundum sleeves are added between the cover of the graphite crucible and the cathode and between the cover of the graphite crucible and the anode, and high-purity industrial argon gas is used as protective gas. A constant current is applied between the cathode and the anode through an external power supply, and O<2-> ions migrate with the electrolysis in the solution at high temperature, thus achieving the purpose of deoxidizing and purifying the metal solution.

Description

technical field [0001] The invention relates to an electrochemical deoxidation method for refining titanium and titanium alloy melts, and belongs to the technical field of metallurgical refining technology. technical background [0002] Titanium alloy has been widely used in special industries such as aerospace and military industry because of its excellent characteristics such as high specific strength and good corrosion resistance. However, the process control in the smelting process of titanium alloy has a great influence on its segregation law. How to reduce composition segregation and obtain the ideal structure of titanium ingot has become a difficult problem in the development of titanium alloy. At high temperature, titanium has a strong affinity with interstitial elements such as N, H, and O. As the oxygen content increases, the impact toughness, reduction of area and elongation of titanium alloys decrease sharply, causing serious pollution to titanium alloys; and oxy...

Claims

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Application Information

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IPC IPC(8): C22B9/00C22B34/12C22C1/00C22C14/00
Inventor 姜敏李重河鲁雄刚张钊周菲菲万怡猛吴广新张东何文英何建平
Owner SHANGHAI UNIV
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