A systematic erosion–corrosion study of two stainless steels in marine conditions via experimental design
A systematic erosion–corrosion study of two stainless steels in marine conditions via experimental design
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DOI：
10.1016/j.wear.2006.12.007
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发表时间：
2007-09
期刊：
影响因子：
5
通讯作者：
H. Meng;Xinming Hu;A. Neville
中科院分区：
文献类型：
--
作者：
H. Meng;Xinming Hu;A. Neville
在3.5% NaCl液固冲击条件下，对两种船用不锈钢（UNS S32760和UNS S31603）的侵蚀腐蚀性能进行了评估。测定了不同条件下材料的总损失率、机械腐蚀、电化学腐蚀组分及其协同作用。考虑的主要环境参数是固体载荷、流速和流体温度。对于这两种不锈钢，损伤的定量分析表明，在考虑的条件范围内，机械侵蚀是侵蚀腐蚀的主要过程。采用全双水平析因试验设计方法，研究了各参数的个体效应及其相互作用对整体材料降解的影响。分析表明，各环境因素之间的相互作用均加速了侵蚀-腐蚀过程中的质量损失，其中以速度和载砂量的相互作用作用最大。流体温度对三个参数的影响最小。本文讨论了一些指导方针，以协助材料的选择和预测在海洋应用中的侵蚀腐蚀的进展。
Erosion–corrosion performance of two stainless steels (UNS S32760 and UNS S31603) for marine applications has been assessed under liquid–solid impingement conditions in 3.5% NaCl. The total material loss rate and the components of mechanical erosion, electrochemical corrosion and their synergistic interactions have been determined under various conditions. The major environmental parameters considered are solid loading, flow velocity and fluid temperature. For the two stainless steels, a quantitative analysis of the damage showed mechanical erosion to be the dominant process under erosion–corrosion over the range of conditions considered. A full two-level factorial experimental design method was applied to study the individual effects of each parameter as well as their interactive contributions to the overall material degradation. The analysis shows that the interactions between environmental factors all accelerate mass loss during the erosion–corrosion process and the interactive effect between velocity and sand loading is the greatest. Fluid temperature has the smallest effect of the three parameters. Some guidelines to assist in material selection for erosion–corrosion and progress towards prediction of erosion–corrosion in marine applications are discussed in this paper.