X80钢在酸性红壤模拟液及室外红壤中的腐蚀动力学规律及相关性分析

王帅星,杜楠,刘道新,肖金华,邓丹萍

Corrosion Kinetics and the Relevance Analysis for X80 Steel in a Simulated Acidic Soil Solution and Outdoor Red Soil

Shuaixing WANG,Nan DU,Daoxin LIU,Jinhua XIAO,Danping DENG

表3 GM(1,1)灰色预测模型计算结果与室外红壤实验值对比

Table 3 Comparisons of analysis results of GM(1,1) grey model and outdoor actual corrosion data

Indoor corrosion data		Fitting data $\overset{\land}{X^{(0)}}$	Verfication results	Outdoor corrosion data		Relative error
Time / d	Raw data $X^{(0)}$	Fitting data $\overset{\land}{X^{(0)}}$	Verfication results	Time / month	Actual data	Relative error
4	0.0053	0.0053	S₁=0.05048 S₂=0.0079 C=0.1565 P=1.0	3	0.0054	1.85%
8	0.0274	0.0358		6	0.0305	17.37%
12	0.0540	0.0491		9	0.0513	4.29%
16	0.0703	0.0664		12	0.0673	4.31%
32	0.1076	0.0902		24	0.1024	11.91%
48	0.1308	0.1223		36	0.1282	4.60%
64	0.1613	0.1658		48	0.1587	4.47%