Device and method for preparing electrochemical corrosive sample

A technology for corrosion samples and preparation devices, which is applied in the field of corrosion performance research of metal materials, can solve problems such as complicated structures, and achieve the effects of simple procedures and saving sample preparation time and cost.

Inactive Publication Date: 2012-08-01
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One end of the rod-shaped conductor is electrically connected to the wire in the insulating tube, and the other end is electrically connected to one side of the research electrode, which is used for electrochemical experiments, and the structure is relatively cumbersome.

Method used

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  • Device and method for preparing electrochemical corrosive sample
  • Device and method for preparing electrochemical corrosive sample
  • Device and method for preparing electrochemical corrosive sample

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] specific implementation plan

[0020] The specific implementation scheme of electrochemical corrosion sample preparation for the stainless steel material of the pump body of the LNG filling station is as follows.

[0021] Cut the stainless steel material of the pump body of the LNG filling station into a cuboid sample 8, grind the working surface 14 of the stainless steel sample 8 to 1200# with sandpaper and polish it; In the polyethylene cover 10 inside the main body 2, the sample 8 is tightly fixed by four elastic pieces 9 on the outer periphery, so that the working surface 14 is attached to the 1mm×1mm hollow window 11 on the lower surface 13 of the polyethylene main body. Align the four pillars 3 on the polyethylene cover 1 with the four holes 7 on the polyethylene body 2 and cover them tightly, and rotate the screw 5 on the polyethylene cover 1 to drive the copper wire 4 to move towards the lower surface 13 of the polyethylene body , until the flat copper wire end...

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PUM

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Abstract

The invention discloses a device and a method for preparing an electrochemical corrosive sample. The device consists of a polyethylene cover and a polyethylene body. The method comprises the following steps of: arranging the working surface of a sample downwardly, putting into the polyethylene cover in the polyethylene body, and tightly fixing the sample with four peripheral elastic sheets to joint the working surface with a hollowed window of (1 millimeter)*(1 millimeter) on the lower surface of the polyethylene body; aligning four support posts on the polyethylene cover with four holes on the polyethylene body, covering tightly, rotating a screw on the polyethylene cover to drive a copper wire to move towards the lower surface of the polyethylene body till a flat copper wire tip is tightly combined with the surface of the sample, and coating conducting glue on the copper wire tip; and putting the working surface of the prepared sample into a corrosive liquid of an electrochemical working station to perform electrochemical corrosion experiments.

Description

technical field [0001] The invention relates to an electrochemical corrosion device and method, which can be applied to the field of research on the corrosion performance of metal materials. Background technique [0002] With the global energy consumption and rising oil prices, the cost pressure on urban public transportation is increasing, and the logistics cost of the society is also increased. Finding alternative energy sources for refined oil has become an urgent problem that people need to solve. Many scholars have begun to explore energy-saving and environmentally friendly liquefied natural gas (LNG) as an energy substitute. LNG is formed below -160°C. During the operation of the LNG filling station, due to the difference in temperature and pressure gradient between the inlet and outlet of the impeller of the centrifugal pump, cavitation occurs on the surface of the metal material of the pump body. "Study on the structure and performance of anti-cavitation coa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/32
Inventor 张磊鲁金忠张永康罗开玉戴峰泽钟金杉陈珑彦齐晗
Owner JIANGSU UNIV
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