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中性盐雾试验标准研究进展

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盐雾试验是评价材料在海洋大气相关环境中耐久性的有效方法.现行不同盐雾试验标准对于试验条件的约束存在一定差异,因此梳理了国内外多个中性盐雾试验相关标准.不考虑盐雾试验箱设置条件,分析了温度、水和NaCl纯度、pH值调整方法、盐雾沉降率、试样摆放角度等标准要求内容对试验结果的影响,探讨了试样尺寸等标准未要求内容对试验结果的影响.最后,提出了盐雾沉降率长期测量监测技术和试样覆盖层切割区保护规范操作的提升建议.
A Review of Neutral Salt Spray Test Standards
Salt spray is an effective method to evaluate the durability of materials in marine atmospheric related environment.At present,there are some differences in the constraints on test conditions in salt spray test standards.This paper reviewed multiple domestic and international standards related to neutral salt spray testing,and summarized the effect of environmental conditions on the salt spray testing results.Without consideration of the salt spray test chamber,the effects of parameters,such as temperature,water and NaCl purity,adjustment method of pH value,salt spray settling rate,sample placement angle etc.required by the standards to the test results were analyzed.In addition,the effects of other parameters,such as sample size,which were not required by standards,to the test results were supplemented.Finally,the improvement direction of long-term measurement and monitoring technique for salt spray sedimentation rate and standardized operation of sample cover layer cutting area protection was proposed.

neutral salt spraysalt spray test standardsalt spray corrosioninfluence factors

闫松涛、王玉荣、宋术伟、金莹

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北京科技大学国家材料服役安全科学中心,北京 102206

中性盐雾试验 盐雾试验标准 盐雾腐蚀 影响因素

中央高校基本科研业务费专项

FRF-DF-20-33

2024

实验室研究与探索
上海交通大学

实验室研究与探索

CSTPCD北大核心
影响因子:1.69
ISSN:1006-7167
年,卷(期):2024.43(1)
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