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Method for measuring iron content in titanium alloy

A technology of quantitative measurement and titanium alloy, which is applied in the direction of color/spectral characteristic measurement, etc., can solve the problem of high measurement cost and achieve the effect of low cost

Pending Publication Date: 2021-01-01
无锡市金义博检测技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problem of high cost of iron content determination in existing titanium alloys, the present invention provides a method for determination of iron content in titanium alloys, which can conveniently detect iron content and has low cost

Method used

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  • Method for measuring iron content in titanium alloy
  • Method for measuring iron content in titanium alloy
  • Method for measuring iron content in titanium alloy

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Embodiment Construction

[0021] A method for determining the amount of iron in a titanium alloy, characterized in that it comprises the following steps:

[0022] (1) Weigh 0.1g of the sample, put it into a 100mL dual-purpose steel bottle, add 10mL of sulfuric acid, the sulfuric acid is made of concentrated sulfuric acid with a density of 1.84cm3 / ml, a concentration of 98%, and distilled water at a volume ratio of 1:1 Prepared, heat on low heat until the sample is completely dissolved, add 10mL of boric acid with a mass concentration of 50g / L after cooling, dilute to the mark with water, and shake well;

[0023] (2) Take six 100mL volumetric flasks, add 10mL of the sample solution, and then accurately add the iron calibration solution 0mL, 0.5mL, 1mL, 1.5mL, 2mL, 2.5mL in sequence, and then add 30mL of water at a mass concentration of 100g / 10 mL of hydroxylamine hydrochloride solution in 1 L, 5 mL of ammonium citrate solution with a mass concentration of 100 g / L, and 25 mL of ammonium acetate solution...

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Abstract

The invention relates to the technical field of metal iron detection, in particular to a method for determining the iron content in a titanium alloy. The method can conveniently detect the iron content, is low in cost, and comprises the following steps of (1) weighing 0.1 g of sample, putting into a 100mL steel dual-purpose bottle, adding 10mL of sulfuric acid, heating with soft fire until the sample is completely dissolved, cooling, adding 10mL of boric acid, diluting with water to a scale, and shaking up; (2) taking six 100mL volumetric flasks, respectively adding 10mL of the sample solution, then sequentially and accurately adding an iron calibration solution, respectively adding 30mL of water, 10mL of a hydroxylamine hydrochloride solution, 5mL of an ammonium citrate solution, 25mL ofan ammonium acetate solution and 1, 10-diazaphenanthrene, adding water to dilute to a scale, shaking up every time when one solution is added, and standing for 20-30 minutes for color development; (3)taking water as a reference, and measuring the absorbance at the wavelength of 500 nm by using a 1cm cuvette; and (4) drawing a straight line of a test value by taking the absorbance as a vertical coordinate and the added pure iron standard quantity as a horizontal coordinate, then extending the straight line to cross the horizontal coordinate at a point X, solving the length of the X and an original point O, and calculating according to a formula.

Description

technical field [0001] The invention relates to the technical field of metal iron detection, in particular to a method for measuring iron content in titanium alloys. Background technique [0002] Titanium, which looks like steel and has a silver-gray luster, is a transition metal that has been considered a rare metal for some time. Titanium is not a rare metal. Titanium accounts for about 0.42% of the total weight in the earth's crust, which is 16 times the total amount of copper, nickel, lead, and zinc. Ranked seventh in the metal world, there are more than 70 kinds of titanium-containing minerals. Titanium has high strength, low density, high hardness, high melting point, and strong corrosion resistance; high-purity titanium has good plasticity, but becomes brittle and hard when impurities exist. In actual use, it is necessary to measure the iron content in it. At present, the common practice is to purchase a large-scale special testing equipment, and the price is often ...

Claims

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Application Information

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IPC IPC(8): G01N21/31
CPCG01N21/31
Inventor 叶反修李兵韦秀兵
Owner 无锡市金义博检测技术有限公司
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