Rapid determination method for current efficiency of Mg-Mn sacrificial anode material

A sacrificial anode and current efficiency technology, which is applied in the field of judging the current efficiency of Mg sacrificial anode materials, and can solve the problems of slow judgment methods and the like

Inactive Publication Date: 2021-07-30
山西银光华盛镁业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the current efficiency determination method of the existing Mg-Mn sacrif...

Method used

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  • Rapid determination method for current efficiency of Mg-Mn sacrificial anode material
  • Rapid determination method for current efficiency of Mg-Mn sacrificial anode material
  • Rapid determination method for current efficiency of Mg-Mn sacrificial anode material

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specific Embodiment approach 1

[0024] Specific Embodiment One: This embodiment is a method for quickly determining the current efficiency of a Mg-Mn sacrificial anode material, which is specifically carried out according to the following steps:

[0025] 1. Prepare the sample: Cut the Mg-Mn sacrificial anode material to be tested into a cuboid with a height of 10mm to 20mm, then peel two of the four sides, and turn and mill the peeled two surfaces with a lathe To light as the surface to be tested;

[0026] Second, configure the electrolyte: dissolve CaSO with distilled water 4 2H 2 O and Mg(OH) 2 , to obtain the electrolyte;

[0027] CaSO in the electrolyte 4 2H 2 O concentration is 5g / L~6g / L, Mg(OH) 2 The concentration is 0.1g / L~0.2g / L;

[0028] 3. Test: Completely immerse the sample to be tested prepared in step 1 into the electrolyte solution prepared in step 2, and the two surfaces to be tested are the sides, then seal the electrolyte solution, take out the sample after soaking for 23h~24h, and us...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the mass fraction of aluminum in the Mg-Mn sacrificial anode material to be tested described in step one is less than 0.01%, and the mass fraction of manganese is 0.5%~1.3% %, the mass fraction of silicon is less than 0.05%, the mass fraction of copper is less than 0.02%, the mass fraction of nickel is less than 0.001%, the mass fraction of iron is less than 0.03%, the mass fraction of impurities is less than 0.3%, and the balance is magnesium. Others are the same as the first embodiment.

specific Embodiment approach 3

[0032] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 1, the Mg—Mn sacrificial anode material to be tested is cut into a cuboid with a height of 20 mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a rapid determination method for current efficiency of a Mg-Mn sacrificial anode material, relates to a method for judging the current efficiency of a Mg sacrificial anode material, and aims to solve the technical problem that an existing method for judging the current efficiency of the Mg-Mn sacrificial anode material is slow. According to the method for rapidly detecting whether the current efficiency of the Mg-Mn sacrificial anode material is qualified or not, the current efficiency of the anode material is rapidly judged through a simple soaking test according to the macroscopic soaking corrosion morphology, the production efficiency is improved, and batch production of the high-potential Mg-Mn sacrificial anode material is promoted. According to the method, whether the current efficiency of the sacrificial anode material is qualified or not can be rapidly judged, and the error between the current efficiency result and the current efficiency result of a GB/T24488-2009 detection method is within +/-2%.

Description

technical field [0001] The invention relates to a method for judging the current efficiency of a Mg sacrificial anode material. Background technique [0002] Magnesium sacrificial anode materials are widely used in anti-corrosion protection fields of oil and gas pipelines, communications, ships, reservoir gates and other projects in underground and fresh water. The consumption of magnesium anode is relatively uniform, the service life is long, and the potential power generation capacity is large, so it can be applied to the cathodic protection construction of metal structures in soil and fresh water medium. [0003] Mg-Mn alloys are widely used as sacrificial anode materials due to their high potential. The current efficiency is an important parameter to ensure its high quality. However, the conventional current efficiency detection method is cumbersome and time-consuming. It usually takes 14 days to get the result, which is seriously limited. The development of industrial ...

Claims

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Application Information

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IPC IPC(8): C23F13/04C23F13/22
CPCC23F13/04C23F13/22
Inventor 王小刚张林庆薛惠莉刘涛李伟莉
Owner 山西银光华盛镁业股份有限公司
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