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Vanadium alloy

A vanadium alloy and alloy technology, applied in the field of vanadium alloys, can solve problems such as the inability to apply coatings, achieve excellent thermal shock resistance, increase service temperature, and low tritium permeability

Pending Publication Date: 2022-01-28
UNIV OF SCI & TECH BEIJING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there is a common shortcoming in the prior art: the surface layer of the coating all contains V elements
As one of the oxidation products of V, V 2 o 5 The melting point of vanadium is about 680°C, which is 700-750°C lower than the service temperature of vanadium alloys, that is to say, all coatings containing V cannot be applied in the temperature range above 680°C

Method used

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  • Vanadium alloy

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Embodiment 1

[0021] Vanadium alloy of the present invention adopts following method to prepare:

[0022] 1) The vanadium alloy-titanium composite material is prepared by diffusion welding the vanadium alloy and the titanium metal interlayer material by hot isostatic pressing, wherein the operating conditions of the hot isostatic pressing method are: high vacuum or inert gas atmosphere, temperature 900°C , pressure 2MPa, time 1h; 2) Apply 200-mesh enamel slurry on the surface of the metal titanium intermediate layer, dry and then fire, the firing conditions are: high vacuum or inert gas atmosphere, temperature 950°C , the time is 10 minutes, and the vanadium alloy coated with the composite structural coating of "vanadium alloy / metal titanium intermediate layer / enamel layer" is obtained.

[0023] The thickness of the metal titanium intermediate layer obtained above is 5000 μm, the thickness of the enamel surface layer is 100 μm, and the service temperature of the vanadium alloy is any temper...

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Abstract

The invention discloses a vanadium alloy, which is coated with a composite structure coating, wherein the composite structure coating comprises a middle layer and a surface layer which are sequentially attached to the surface of a vanadium alloy matrix. According to the invention, the surface of a vanadium alloy is coated with a composite structure coating, and the composite structure coating is applied to the surface of a vanadium alloy matrix, so that the service temperature of the vanadium alloy can be increased, and the vanadium alloy has the advantages of being low in tritium permeability, excellent in thermal shock resistance and the like, and is applicable to the field of composite materials.

Description

technical field [0001] The invention belongs to the field of composite materials, and in particular relates to a vanadium alloy. Background technique [0002] Vanadium alloy has many advantages such as high service temperature (700-750 ℃), excellent anti-radiation swelling performance, low neutron radiation activation, non-magnetic, good plastic processing performance, etc. It is the future demonstration (DEMO) fusion reactor and commercial fusion reactor. One of the most promising candidate cladding structural materials. However, due to the combination of vanadium alloys with H 2 , O 2 Both have a strong affinity, and the application of vanadium alloys in He cold solid cladding will face the problems of high tritium penetration and high temperature oxidation, resulting in a large loss of tritium and high temperature oxidation corrosion and brittle behavior of vanadium alloys. [0003] The application of tritium blocking coating and high temperature oxidation resistant co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/01B32B33/00C23D5/02B23K20/00
CPCB32B15/01B32B33/00C23D5/02B23K20/00B23K20/002
Inventor 张高伟万发荣韩文妥詹倩龙毅刘平平易晓鸥杨善武张磊李然然
Owner UNIV OF SCI & TECH BEIJING
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