Study on atmospheric corrosion resistance of low alloy steel .
低合金钢大气腐蚀性能的研究。
The research results show that the only addition of RE in mild steel could remarkably improve atmospheric corrosion resistance of mild steels, too.
结果表明：在低碳钢中，仅添加稀土也能明显的提高其耐大气腐蚀性能。
Metal corrosion under natural environment is called atmospheric corrosion, the steel with the characteristic of atmospheric corrosion resistance is named weather resisting steel.
金属在自然环境条件下的腐蚀称为大气腐蚀，因而对能在大气自然环境条件下耐腐蚀的钢称为耐大气腐蚀钢。
The total quantity of corrosion surface defect is decreased due to the decrease of grain boundary energy with the increase of grain size and the atmospheric corrosion resistance is increased.
但是晶粒尺寸增大后晶界处因局部腐蚀电流密度增大将会在局部造成更深的腐蚀坑槽并降低耐候性；
Using the state of the organization for the fine grain ferrite pearlite, strength than ordinary carbon structural steel Q235 about 20% ~ 30%, high atmospheric corrosion resistance of 20% ~ 38%.
使用状态的组织为细晶粒的铁素体—珠光体，强度比普通碳素结构钢Q235高约20%～30%，耐大气腐蚀性能高20%～38%。
The test bridge made of a new type of weather resistant steel of NH35Q steel has a strong resistance to atmospheric corrosion.
使用NH35Q耐候钢新钢种制作的试验桥，耐大气腐蚀能力强。
Phosphorous concentration in the surface layer of plate effectively increases its resistance to atmospheric corrosion.
由于磷在钢板表面的富集有效地提高了钢板的耐大气腐蚀性能。
Such atmospheric corrosion resistant elements as Cu, cr, and Ni are added to structural steel to increase both weather and corrosion resistance.
铜、铬、镍等大气耐腐蚀元素被添加到增加天气、耐蚀钢结构。
Such atmospheric corrosion resistant elements as Cu, cr, and Ni are added to structural steel to increase both weather and corrosion resistance.
铜、铬、镍等大气耐腐蚀元素被添加到增加天气、耐蚀钢结构。
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