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Method for measuring content of oxygen, nitrogen and hydrogen in titanium alloy

A hydrogen content and titanium alloy technology, applied in the direction of measuring devices, test metals, test samples, etc., can solve the problems of low-content gas element sample test influence, cumbersome steps, etc., to eliminate blank interference, simple method, saving Analyze cost effects

Inactive Publication Date: 2017-09-22
INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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AI Technical Summary

Problems solved by technology

With this test method, the blank value of nickel flux must be deducted, the steps are cumbersome, and it will have a great impact on the test of low-content gas element samples

Method used

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  • Method for measuring content of oxygen, nitrogen and hydrogen in titanium alloy
  • Method for measuring content of oxygen, nitrogen and hydrogen in titanium alloy

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with specific examples.

[0019] (1) Take a high-purity electrolytic nickel plate with an oxygen, nitrogen and hydrogen content less than 0.01% for surface grinding and rust removal, cut into strips with a width of about 0.5-2.5mm, and cut into regular lengths with a mass of 1.50±0.10g Square nickel particle flux;

[0020] (2) pickling in 75mL glacial acetic acid + 25mL nitric acid + 2mL hydrochloric acid pickling solution for 40-50s, to remove the trace oxides on the surface of the nickel grains that have not been completely polished or the sand grains embedded in the surface when the grinding wheel is polished, Use an ultrasonic cleaner and acetone organic reagent to quickly clean and decontaminate, and store in a sealed plastic bottle after drying.

[0021] (3) After the electrode is lowered, manually put the nickel particle flux into the high-purity graphite crucible of the oxygen, nitro...

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Abstract

The invention discloses a method for measuring content of oxygen, nitrogen and hydrogen in a titanium alloy. The method comprises the following steps: (1) performing treatment such as cutting and polishing on a high-purity electrolysis nickel board, thereby preparing a nickel particle fluxing agent; (2) putting the nickel particle fluxing agent into an inner high-purity graphite crucible of a lower electrode of an oxygen, nitrogen and hydrogen analyzer, and performing degassing treatment under high power; (3) selecting a measuring condition, and measuring oxygen, nitrogen and hydrogen gas in the titanium alloy through the oxygen, nitrogen and hydrogen analyzer; and (4) calculating mass percentage of oxygen, nitrogen and hydrogen in a test sample. According to the method disclosed by the invention, a self-made nickel particle fluxing agent with a relatively high blank value can be used to replace commercially available fluxing agents such as a nickel basket and nickel scraps, content of oxygen, nitrogen and hydrogen in the titanium alloy is measured through a pulse melting method, interference of the blank value can be remarkably reduced or eliminated by changing normal test steps and analysis conditions, and the same effects of the commercially available fluxing agents are achieved, so that detection cost is greatly reduced; and the method has the advantages of being simple, high in accuracy and the like, and meets the quick detecting requirements.

Description

technical field [0001] The invention relates to the field of analysis of titanium alloy materials, in particular to a method for measuring the content of oxygen, nitrogen and hydrogen in titanium alloys. Background technique [0002] Titanium alloy has the advantages of light weight, high specific strength, wear resistance, combustion resistance, oxidation resistance, etc., and has excellent mechanical properties at room temperature and high temperature. It has become one of the most popular high-temperature structural materials in the world. It can be used as an aircraft engine and Body materials and automotive valve rockers and other materials, and have good application prospects in biomedicine, automobile industry and other fields. Because the three gas elements of oxygen, nitrogen and hydrogen have high solubility in titanium alloy, they have become mandatory inspection items. In the book "Titanium Smelting Process" edited by Li Dacheng and others, the properties of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/34G01N1/44G01N33/20
CPCG01N1/286G01N1/34G01N1/44G01N33/20G01N2001/2873
Inventor 朱春要周强董礼男张珂
Owner INST OF RES OF IRON & STEEL JIANGSU PROVINCE
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