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1)  pitting attack
点蚀;点状腐蚀;点腐蚀
2)  pit ?pitting corrosion
点状腐蚀
3)  pitting [英]['pitiŋ]  [美]['pɪtɪŋ]
点蚀[腐蚀]
4)  pitting corrosion
点腐蚀
1.
And the formation mechanism and influencing factors of pitting corrosion were introduced,and the causes of pitting corrosion of 304stainless steel pipeline were analysed.
在对点腐蚀形成的机理和影响因素的详细介绍和304不锈钢点腐蚀原因分析的基础上,提出了对不锈钢管道点腐蚀的预防措施。
2.
The microstructure after heat treatment was observed,the content of ferrite was measured(<40%),and the hardness measurement,pitting corrosion and intercrystalline corrosion test were also conducted.
对热处理后的组织进行了金相观察,测定铁素体体积百分含量低于40%,并进行硬度测量、点腐蚀以及晶间腐蚀试验。
3.
The pitting corrosion behavior of BFe30-1-1 alloy in NaCl solutions was investigated.
对铜镍合金BFe30-1-1在NaCl溶液中出现的点腐蚀行为进行了研究。
5)  Pitting [英]['pitiŋ]  [美]['pɪtɪŋ]
点腐蚀
1.
Pitting is a type of localized corrosion resulting in penatration of steam generator tubes.
点腐蚀是一种在蒸汽发生器传热管上产生的微小直径穿孔性管壁腐蚀点,其原因是在该处形成了局部腐蚀电池。
2.
Corrosion process is pitting at first,then intergranular corrosion,while exfoliation at last.
浸泡腐蚀实验发现,Ti2AlC在酸中的腐蚀类型由点腐蚀发展到晶间腐蚀最后为剥蚀,腐蚀速率随着浸泡时间的延长而不断增大。
6)  dew-point corrosion
露点腐蚀
1.
Here described are the sulfuric acid dew-point corrosion in the heaters and air preheaters in oil refineries and electric power plant,the characteristics of new thermal-conductive enamel technology and its application in refinery and electric power plant services.
文章主要介绍了导热搪瓷这种新技术的特点,炼油厂及电厂的加热炉和空气预热器的硫酸露点腐蚀状况,以及导热搪瓷在电厂和炼油厂使用情况。
2.
It is concluded that the spalling was mainly caused by dew-point corrosion of anchor pins.
文章主要介绍了中国石化齐鲁股份有限公司胜利炼油厂第三套常减压装置常压炉衬里脱落情况及处理措施,并从腐蚀形貌、操作环境及腐蚀产物几方面分析了衬里脱落的原因,确定衬里脱落主要是由于保温钉受烟气露点腐蚀造成。
3.
The dew-point corrosion of the air preheater in the coker furnace was discussed in consideration of operation, maintenance and improvements.
空气预热器运行的好坏直接影响到加热炉的热效率 ,文章结合焦化装置加热炉空气预热器的使用、维修、改进等 ,论述了预热器存在的露点腐蚀问题。
补充资料:点蚀
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性质:又称坑蚀,斑点腐蚀,小孔腐蚀或点蚀。金属表面大部分区域腐蚀相对较轻,而某些局部出现向纵深发展的腐蚀小孔的腐蚀形态。孔蚀的原因是活性阴离子导致表面钝化膜局部破坏。具有钝化能力的金属如不锈钢、铝合金及碳钢等,在含氯离子介质中经常发生孔蚀。蚀孔的发展速度有时很快,可以深入金属甚至短时间内蚀穿金属截面,且较难预测,因此孔蚀往往比均匀腐蚀具有更大的危害性。可以通过降低介质中的有害阴离子浓度,采用涂层保护、添加缓蚀剂和阴极保护等方法予以减轻或防止。

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