Method for simulating corrosion of weathering resistant steel in high-moist-heat marine atmosphere

A marine atmosphere and weather-resistant steel technology, applied in the fields of weather resistance/light resistance/corrosion resistance, measuring devices, instruments, etc., can solve the problems of unreported test methods and achieve good reproducibility
CN105699280AInactive Publication Date: 2016-06-22CENT IRON & STEEL RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CENT IRON & STEEL RES INST
Publication Date
2016-06-22
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention relates to a method for simulating corrosion of weathering resistant steel in high-moist-heat marine atmosphere. The method comprises the following test parameters that a weathering resistant steel test specimen is subjected to the circulation processes of steeping, moistening and drying in an alternate immersion corrosion testing machine; the circulation period is 60min+ / -5min; the steeping time is 2min+ / -1min; the moistening time is 10min+ / -2min; a dipping solution is a NaCl solution; the NaCl solution concentration is 2.00 percent+ / -0.05 percent; the steeping solution temperature is 35 DEG C+ / -2 DEG C; the humidity in the alternate immersion corrosion testing machine is 80 percent RH+ / -5 percent RH; the total corrosion time of the weathering resistant steel test specimen in the alternate immersion corrosion testing machine is greater than or equal to 72h; a baking lamp in the alternate immersion corrosion testing machine is kept open. The method has better simulation performance, acceleration performance and reproducibility, and provides bases for studying the corrosion rule and the corrosion resistance of the weathering resistant steel in high-moist-heat marine environment.
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Description

technical field

[0001] The invention relates to the technical field of simulating the corrosion process of weathering steel in the atmosphere, in particular to a method for simulating the corrosion of weathering steel in the high-humidity ocean atmosphere. Background technique

[0002] Weathering steel has good atmospheric corrosion resistance due to the formation of a dense and continuous corrosion product layer on the surface during use, which can prevent further corrosion of the substrate by external oxygen, water and other corrosive media. Performance, at the same time, it has high corrosion resistance and excellent mechanical and welding performance.

[0003] The field exposure test of materials is a common test method for studying atmospheric corrosion. This method can truly reflect the corrosion situation in the location and provide reliable test data basis for reasonable material selection in engineering construction. For this reason, my country has also established...

Claims

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