摘要
根据气象条件的不同,将大气腐蚀区分为不同时域(时期)的腐蚀,即区分为降雨、凝露时期和高、亚、中湿度时期的腐蚀。各自腐蚀量为该时域的瞬时腐蚀速率对其累计时间的积分。而该时域的腐蚀速率为各自环境因子的相关函数。进行了长期的大气腐蚀电化学监测,对总共20项气象因子、大气污染因子及各时域的累计时间与大气腐蚀量之间的相关函数关系进行了研究,分别进行了各时域腐蚀速率的逐步回归和多元回归分析,确定了影响大气腐蚀的显著因子,建立了各时域的和综合的数学模型,建立了各自的和综合的多元线性回归方程组,给出了碳钢、低合金钢和纯锌的大气腐蚀预测方程。
Atmospheric corrosion can be divided into five different periods in terms of various weather conditions, i. e. during rainfall,dewfall and with high, medium and low relative humidity. The corrosion rate is a function of individual environment factors. The corrosion lossin each period is the product of the corrosion rate in the period and corresponding cumulative time. By electro chemical monitoring of atmospheric corrosion, the relationship between corrosion loss and more than 20 factors involving weather, atmospheric pollution, time, etc. has been investigated. Polybasic and gradual regression analyses have been made of the data obtained. The significant facors affecting atmospheric corrosion were determined. The general mathematical models based on the models of various significant factors and corrosion time in individual periods and the individual and general regressive equations were established. Finally, prediction equations for atmospheric corrosion of carbon steel, low alloy steel and zinc have been given.
出处
《中国腐蚀与防护学报》
CAS
CSCD
1993年第1期10-18,共9页
Journal of Chinese Society For Corrosion and Protection
基金
国家自然科学基金重大项目课题