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Method for measuring titanium content in nickel-titanium-niobium shape memory alloy

A technology of memory alloy and determination method, which can be used in color/spectral characteristic measurement, material analysis by observing the influence of chemical indicators, and analysis by making materials undergo chemical reactions, etc. It can solve the problem of inability to accurately measure the shape of NiTi Memory alloy has high titanium content, cannot meet the needs of R & D and production, and the cost of titanium content detection is high, so as to achieve the effect of optimizing reagent and dosage parameters, shortening time impact, and saving testing time

Inactive Publication Date: 2019-08-30
INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the detection cost of the titanium content in the existing nickel-titanium-niobium shape memory alloy is high, and the test period is long, which cannot meet the needs of research and development and production, while the existing spectrophotometer measurement of the titanium content in the alloy Both methods are suitable for the determination of low titanium content, but cannot accurately measure high titanium content in nickel-titanium-niobium shape memory alloys

Method used

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  • Method for measuring titanium content in nickel-titanium-niobium shape memory alloy

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Embodiment 1

[0046] The determination method of titanium content in nickel-titanium-niobium shape memory alloy, the implementation method is as follows:

[0047] Step 1: Weigh 0.1000g of the sample into a 250mL beaker, add 25mL of sulfuric acid (1+1) and heat until the sample is completely dissolved to form salts, continue heating until sulfuric acid fumes are emitted, remove and cool to room temperature.

[0048] Step 2: Add water to the beaker in step 1, heat to dissolve the salts, and transfer to a 250mL volumetric flask to obtain a test solution.

[0049] Step 3: Take 10.0mL of the test solution in step 2 into a 200mL volumetric flask, add 10mL of hydrochloric acid solution, 5mL of ascorbic acid solution, leave for 5min, add 25mL of diantipyridine methane hydrochloride solution, dilute with water, place for 15min, at the wavelength Use a 1cm cuvette to measure the absorbance at 460nm and use a 1cm cuvette for zero adjustment, and check the quality of titanium from the working curve acc...

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Abstract

The invention discloses a method for measuring a titanium content in a nickel-titanium-niobium shape memory alloy. The problems that the detection cost of the titanium content in the existing nickel-titanium-niobium shape memory alloy is high, the test period is long, the research and development and production needs cannot be met, the existing spectrophotometer measurement methods of the titaniumcontent in the alloy are all suitable for the measurement of low titanium content, but are unable to accurately measure high titanium content in the nickel-titanium-niobium shape memory alloy are solved. The method disclosed by the invention comprises the following steps: preparing a standard solution, drawing a working curve, generating a salt by using a sulfuric acid solution specimen, dissolving the salt in water to obtain a test solution, taking the test solution, measuring the absorbance, searching for the titanium content on the working curve, and calculating the titanium content in thespecimen through a formula. The method disclosed by the invention has the advantages of high detection speed and high detection precision of the titanium content in the nickel-titanium-iridium shapememory alloy, etc.

Description

technical field [0001] The invention relates to the technical field of quantitative detection of alloy elements, in particular to a method for measuring titanium content in nickel-titanium-niobium shape memory alloys. Background technique [0002] Nickel-titanium-niobium shape memory alloy is an important raw material for the production of special alloys used in aviation, aerospace, military, and biomedical industries. The titanium content is 35-40%. The composition and content of the main elements and impurity elements in the nickel-titanium-niobium shape memory alloy It has a direct impact on the performance of the material, and the accurate determination of the titanium content is of great significance to the development and production of nickel-titanium-niobium shape memory alloy materials. [0003] In order to accurately measure the titanium content in the existing nickel-titanium-niobium shape memory alloys, one is to use spectrometer ICP-AES and other high-end instrum...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/31G01N21/78
CPCG01N21/31G01N21/78
Inventor 代以春田伦富黄姝珂王利利邹德霜
Owner INST OF MACHINERY MFG TECH CHINA ACAD OF ENG PHYSICS
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