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Material corrosion acceleration test method for simulating South China Sea island reef environment

An accelerated test and cycle acceleration technology, applied in the fields of analyzing materials, weather resistance/light resistance/corrosion resistance, measuring devices, etc., can solve problems such as weak correlation

Active Publication Date: 2022-01-14
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
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Problems solved by technology

However, in the actual application of the above research, the correlation between the acceleration spectrum and the test results of the actual environment of the South China Sea islands and reefs is still weak.

Method used

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  • Material corrosion acceleration test method for simulating South China Sea island reef environment
  • Material corrosion acceleration test method for simulating South China Sea island reef environment
  • Material corrosion acceleration test method for simulating South China Sea island reef environment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Sample: The base material is 2524 aluminum alloy, and the surface treatment method of the base material is chemical conductive oxidation treatment.

[0058] Test steps and conditions:

[0059] (1) Spray coral salt solution: take real coral salt and grind it into powder, use a 1000-mesh sieve to dry out the coral powder, mix it with ASTM-D1141 artificial seawater simulation liquid, and configure a coral salt solution with a mass fraction of 10%. Put it into a magnetic stirring device and rotate it evenly, and spray it on the sample until the surface is uniformly formed into a film.

[0060] (2) Salt spray test:

[0061] Temperature: 50°C, the salt spray solution is a neutral modified ASTM-D1141 artificial seawater simulated liquid (use ASTM-D1141 artificial seawater as the bottom liquid, add NaCl for neutral modification, make Cl - The mass fraction reaches 3.034%), and the salt mist sedimentation rate is 1.0~2.0ml / h.80cm 2 .

[0062] (3) Solar radiation test:

[00...

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Abstract

The invention relates to a material corrosion acceleration test method for simulating a South China Sea island reef environment, which comprises the following steps: carrying out a cyclic acceleration test on a to-be-tested material, and sequentially coating coral salt, carrying out a salt spray test and carrying out a solar radiation test in one period of the cyclic acceleration test; wherein the conditions of the salt spray test are as follows: the temperature is 45-55 DEG C, and the salt spray sedimentation rate is 1-2mL / h.80cm < 2 >, the conditions of the solar radiation test comprise that: the irradiance adopts an instantaneous extreme value of 1110-1130 W / m < 2 > or a cumulative intensity conversion value of 5700-5710 W / m < 2 >. The acceleration test method can better conform to the characteristics of atmospheric corrosion of islands and reefs in the South China Sea of typical equipment materials, the correlation between a test result and an actual environment is relatively strong, and the result effectiveness is relatively high.

Description

technical field [0001] The invention relates to the technical field of material environment testing, in particular to a material corrosion acceleration test method for simulating the South China Sea island reef environment. Background technique [0002] The islands and reefs in the South China Sea are located at low latitudes near the equator and belong to the tropical marine climate. The main climate characteristics of the islands and reefs in the South China Sea are: long hours of sunshine, strong radiation, high temperature all year round, abundant rainfall, high humidity, strong wind, and little fog. Part of the equipment structure continues to suffer from "high temperature, high humidity, high salt, strong solar radiation" in the South China Sea and the dry / wet cycle erosion of splashed sea water. The corrosion problem is serious, which greatly affects the life of the equipment structure and the safe use of the equipment. [0003] Because the traditional natural enviro...

Claims

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Application Information

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IPC IPC(8): G01N17/00
CPCG01N17/00G01N17/004
Inventor 王荣祥张博邓俊豪龚雨荷王春辉
Owner CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
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