Simulation device for metal corrosion test in dynamic environment

A technology for dynamic corrosion and simulating experimental devices. It is used in measurement devices, weather resistance/light resistance/corrosion resistance, instruments, etc. It can solve problems such as fatigue damage to instruments, inaccuracy, and the influence of hull material corrosion to be studied, and achieve device parameter control. Precise and efficient results

Inactive Publication Date: 2016-07-13
PEKING UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The vibration of the hull will lead to problems such as fatigue damage and instrument misalignment, and the impact on the corrosion of hull materials also needs to be studied

Method used

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  • Simulation device for metal corrosion test in dynamic environment
  • Simulation device for metal corrosion test in dynamic environment
  • Simulation device for metal corrosion test in dynamic environment

Examples

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Comparison scheme
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Embodiment Construction

[0023] The implementation of the present invention will be described below through specific examples, but the present invention is not limited to the provided examples, and those skilled in the art can use and expand the present invention in different implementation modes according to corresponding needs.

[0024] Take the study of the synergistic effect of temperature and seawater erosion rate on the corrosion behavior of materials as an example.

[0025] 1. Obtain the microscopic topography of the processed sample under the scanning electron microscope.

[0026] 2. Electrochemical measurement was carried out on the material after grinding in static seawater, and the relationship diagram of the open circuit voltage changing with time was obtained.

[0027] 3. Set the water speed at 4m / s, the vibration frequency at 20Hz, and the erosion angle at 0°, that is, the water flow is kept parallel to the surface of the sample.

[0028] 4. Set the temperature at 0°, 10°, 20°, and 30° ...

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Abstract

The invention provides a device system for simulating a metal corrosion test in a dynamic seawater environment and belongs to simulation tests and detection technologies in the field of metal corrosion. The device is composed of a refrigeration region, a test region, a temperature control region and a water pump region, wherein the temperature of seawater in the refrigeration region is kept constant, and the temperature change can be regulated and controlled; while storing water, the water pump region is capable of supplying power to seawater so as to enable the seawater to scour samples at a certain speed; the samples are placed in the test region and an electrochemical test is performed; by virtue of design of a sample fixture, the relative angle of the samples and waterflow and the sample vibration frequency can be regulated and controlled. According to the device, corrosion behavior of ships in dynamic seawater is researched from four aspects of temperature, seawater speed, scouring angle and ship vibration frequency; in combination with an electrochemical test technology, real-time continuous monitoring is performed on a whole dynamic corrosion process, so that data of material corrosion research is relatively more stereoscopic and accurate, various materials and protective measures can be better evaluated, reference is provided for development, application and protection for novel ship materials.

Description

technical field [0001] The invention belongs to the field of metal corrosion research, in particular to the research of a metal corrosion simulation device and an experimental method in a dynamic environment. Background technique [0002] Metal materials are subject to various forms of corrosion in severe marine environments. It is estimated that the economic loss caused by metal corrosion in my country exceeds 200 billion yuan every year. These losses waste materials, cause pollution of the marine environment, and bring huge losses to the national economy. [0003] Metal materials are in a dynamic marine environment, and the flowing seawater causes erosion corrosion and cavitation corrosion to occur. This kind of corrosion has a long period of influence on materials and complex influencing factors, which bring certain challenges to the performance evaluation of marine materials. People generally adopt static immersion test when simulating this situation. The advantage of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N17/02
CPCG01N17/02
Inventor 白树林陈琳
Owner PEKING UNIV
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