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Method for simultaneously determining contents of oxygen, nitrogen, and hydrogen in titanium alloy

A titanium alloy and hydrogen content technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of simultaneous detection of oxygen, nitrogen and hydrogen, cumbersome method operation, low analysis efficiency, etc., and achieve great practical and popularization value , Accurate test results, accurate test results

Active Publication Date: 2019-02-15
CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned detection techniques for oxygen, nitrogen, and hydrogen in titanium hydride are mostly single element determination methods, which cannot realize the simultaneous detection of oxygen, nitrogen, and hydrogen, and there are also backward equipment, cumbersome methods, and low analysis efficiency. And other shortcomings, can not fully meet the requirements of industrial production of titanium hydride

Method used

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  • Method for simultaneously determining contents of oxygen, nitrogen, and hydrogen in titanium alloy
  • Method for simultaneously determining contents of oxygen, nitrogen, and hydrogen in titanium alloy
  • Method for simultaneously determining contents of oxygen, nitrogen, and hydrogen in titanium alloy

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Embodiment 1

[0063] Embodiment 1 adopts the inventive method to measure the content of oxygen, nitrogen, hydrogen in titanium hydride simultaneously

[0064] Quantitatively weigh the titanium hydride sample and place it in a metal nickel capsule, then add metal nickel particles, and cut the nickel particles into particles of 1 mm to 2 mm with a fine nickel wire with a diameter of 1 mm. The mass ratio of nickel flux (nickel capsule + nickel particles) to the sample was controlled at 14:1, and the mass ratio of metallic nickel particles to the sample was controlled at 8:1. Put the above-mentioned metal nickel capsule containing the sample into the oxygen, nitrogen and hydrogen analyzer for measurement. The method of the present invention adopts a two-stage heating method to simultaneously measure the oxygen, nitrogen, and hydrogen contents in the sample, the heating temperature of the first stage is 1400°C, and the heating temperature of the second stage is 2900°C. The metal nickel capsule ...

Embodiment 2

[0070] Embodiment 2 adopts the inventive method to measure the content of oxygen, nitrogen, hydrogen in titanium hydride simultaneously

[0071] In order to verify the accuracy of oxygen measurement by the method of the present invention, a standard addition recovery test of oxygen was specially carried out. Quantitatively weigh the titanium hydride 2# sample in the nickel capsule, quantitatively add the oxygen standard sample in titanium, operate and measure in the same way as in Example 1, and the results are shown in the following table:

[0072] Table 10

[0073]

[0074] It can be seen from Table 10 that the recovery rate of oxygen addition is in the range of 95% to 106%, indicating that the method of the present invention has good oxygen determination accuracy.

Embodiment 3

[0075] Embodiment 3 adopts the inventive method to measure the content of nitrogen in high-hydrogen titanium powder or high-hydrogen titanium alloy powder

[0076]Quantitatively weigh high-hydrogen titanium powder or high-hydrogen titanium alloy powder samples (the mass fraction of hydrogen is 0.17% to 1.21%) and place them in a metal nickel capsule, then add metal nickel particles, and cut the nickel particles into 1mm diameter with 1mm fine nickel wire Particles of ~2mm. The mass ratio of nickel flux (nickel capsule + nickel particles) to the sample was controlled at 18:1, and the mass ratio of metallic nickel particles to the sample was controlled at 8:1. Put the above-mentioned metal nickel capsule containing the sample into the oxygen, nitrogen and hydrogen analyzer for measurement. The method of the present invention adopts a two-stage heating method to simultaneously measure the oxygen, nitrogen, and hydrogen contents in the sample, the heating temperature of the first...

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Abstract

The invention relates to a method for simultaneously determining the contents of oxygen, nitrogen, and hydrogen in titanium alloy, and belongs to the technical field of non-metallic impurity detectionfor the titanium alloy. The technical problem to be solved by the invention is to provide a method for simultaneously determining the contents of oxygen, nitrogen, and hydrogen in the titanium alloy.The technical scheme of the invention is as follows: the titanium alloy is put into an oxygen-nitrogen-hydrogen analyzer based on an inert gas fusion-infrared absorption and / or thermal conductivity method; the metal nickel is used as a fluxing agent; and a two-stage heating mode is adopted for the determination, wherein the first-stage heating temperature is 1050 DEG C to 1550 DEG C, and the second-stage heating temperature is 2700 DEG C to 3000 DEG C; and the hydrogen content in the titanium alloy is 0.030% to 4.1% (w / w). According to the method for simultaneously determining the contents ofoxygen, nitrogen, and hydrogen in the titanium alloy, the oxygen, nitrogen, and hydrogen in the titanium alloy are released in a segmented mode by adopting the two-stage heating mode, thereby eliminating the interference of high hydrogen content in nitrogen determination, and realizing the simultaneous determination of the three elements; and the detection result is accurate, and the result is consistent with the result determined step by step by a chemical method.

Description

technical field [0001] The invention relates to a method for simultaneously measuring the contents of oxygen, nitrogen and hydrogen in titanium alloys, and belongs to the technical field of detection of non-metallic impurities in titanium alloys. Background technique [0002] Oxygen, nitrogen and hydrogen are the main non-metallic impurities in titanium alloys, which have a significant impact on the properties of titanium alloys. Accurate and rapid detection of oxygen, nitrogen and hydrogen in titanium alloys is of great significance for production quality control and product quality control. Taking titanium hydride as an example, metal titanium can absorb a large amount of hydrogen gas and convert it into titanium hydride under certain conditions. Titanium hydride is brittle and can be easily crushed by machinery to prepare titanium hydride powder. In the industry, titanium hydride powder is easy to dehydrogenate at a lower temperature to produce pure titanium powder with d...

Claims

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Application Information

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IPC IPC(8): G01N25/48
CPCG01N25/4846
Inventor 钟华
Owner CHENGDU ADVANCED METAL MATERIALS IND TECH RES INST CO LTD
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