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Tantalum surface carbonization modification method and product prepared through tantalum surface carbonization modification method

A surface carbonization and modification technology, which is applied in the field of anti-corrosion and anti-corrosion of tantalum surface, can solve the problems of complex process and difficult control of modified layer structure, and achieve the effect of simple preparation process, enhanced surface performance of tantalum, and low cost

Active Publication Date: 2017-05-31
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a method for carbonization modification of tantalum surface and its preparation in view of the problems that tantalum material has a high melting point, the existing tantalum carbonization surface modification technology is complex, and the structure of the modified layer is not easy to control. product

Method used

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  • Tantalum surface carbonization modification method and product prepared through tantalum surface carbonization modification method
  • Tantalum surface carbonization modification method and product prepared through tantalum surface carbonization modification method
  • Tantalum surface carbonization modification method and product prepared through tantalum surface carbonization modification method

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Embodiment 1

[0049] Example 1 The carbide modified layer prepared on the surface of pure tantalum flake metal using an external heating source auxiliary heating method

[0050] The preparation parameters of the carbide modified layer in this example are shown in Table 1 below.

[0051] Table 1 Preparation conditions of the carbide layer on the surface of tantalum

[0052]

[0053] In order to obtain a relatively thick carbide layer on the surface of metal tantalum, in this embodiment, a baking temperature of 200°C and a baking time of 1h are used; the ion beam current intensity is 3000mA, and external heating is used, and the corresponding working temperature is 1500°C , the working time is 1h; plus vacuuming and shutdown time, the total time length in this embodiment reaches 4h.

[0054] Obtain a carbide layer on the metal tantalum surface by the preparation parameters in table 1, and carry out X-ray photoelectron spectroscopy (XPS) component analysis to the carbide on the surface, th...

Embodiment 2

[0059] Example 2 Preparation of carbonized modified layer on the surface of cylindrical metal tantalum

[0060] The preparation parameters of the carbide modified layer in this example are shown in Table 2 below.

[0061] Table 2 Preparation conditions of the carbide layer on the surface of tantalum

[0062]

[0063] In order to investigate the ability of carbonization modification on the surface of the cylindrical metal tantalum to be used for modification of the crucible, in this embodiment, the total time length of the process environment is controlled. In order to achieve the above goals, in Example 2, the baking temperature was 200°C, and at the same time, in order to reduce the influence of impurity gases, the baking was extended to 2h; plus vacuuming and shutdown time, the total length of time in this example is 4h .

[0064] The carbide layer was obtained on the surface of the cylindrical metal tantalum workpiece by simply heating the hollow cathode through the pr...

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Abstract

The invention discloses a tantalum surface carbonization modification method and a product prepared through the tantalum surface carbonization modification method. The method aims to solve the problems that the melting point of a tantalum material is high, an existing tantalum carbonization surface modification technology is complex in technique, and modified layer structures cannot be controlled easily. According to the method, on the premise that the state of impurities in a vacuum chamber is controlled, methane gas is ionized, a carbon element is introduced to the surface of metal tantalum through bombardment of carbon ion beams, heat generated by bombardment of the ion beams is used for heating so as to help the carbon element diffuse into the metal tantalum, a carbide modified layer is formed on the surface of the metal tantalum, and thus, the melt corrosion resistance of the surface of the metal tantalum is improved. The preparation technique is simple, the production efficiency is high, cost is low, and requirements of industrial large-scale application can be met. Meanwhile, the product prepared through the method has good melt corrosion resistance and is worthy of large-scale application and popularization.

Description

technical field [0001] The invention relates to the field of anti-corrosion, in particular to the field of anti-corrosion of tantalum surface, and specifically relates to a method for carbonization modification of tantalum surface and a product prepared therefrom. Background technique [0002] Tantalum and its alloys, as high-temperature and corrosion-resistant structural materials, are widely used in high-tech fields such as aerospace, nuclear industry, chemical industry, medical treatment, and weapon manufacturing. Based on the good machinability and excellent high-temperature mechanical properties of tantalum, it can withstand the corrosion of various liquid metals, so it is often used as a high-temperature crucible material for the melting of various transition metals and rare earth alloys. [0003] However, when the temperature of tantalum is above 300°C, its surface will accelerate oxidation, which will reduce its corrosion resistance and cause the melt to infiltrate i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C8/36
CPCC23C8/36
Inventor 朱康伟胡殷周寰林罗文华龙重马策杨锁龙陈晓龙罗志鹏罗丽珠
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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