1) pit corrosion
小孔腐蚀
1.
Aiming at AL-Zn-In-Mg sacrificial anodes, an inves ti gation of the electrochemical performance, deposition behavior of active element s, corrosion characteristic and pit corrosion performance were made at 20°C and 65?℃.
分析认为 :在常温下 ,铝阳极的活化过程主要是活性元素的“溶解 再沉积”过程 ;高温下以小孔腐蚀和晶间腐蚀为主要的溶解方
2.
The corrosion features of metal coatings were analyzed based on the mechanism of pit corrosion.
结合金属小孔腐蚀机理,分析了金属镀层腐蚀的特点,给出了提高镀层耐蚀性能的途径,如多层镍工艺,光亮Ni/Cr镀层工艺,打底镀层,镀后处理等。
2) Pitting corrosion
小孔腐蚀
1.
Potential decay after interruption of the current in galvanostatic polarization was measured for passivated metallic electrode during pitting corrosion period by using a transient measurement system established by the authors previously.
用这项技术连续监测了20~#碳钢和1Cr18Ni9Ti不锈钢的小孔腐蚀破坏过程。
3) pitting
[英]['pitiŋ] [美]['pɪtɪŋ]
点蚀，局部腐蚀;小孔，凹痕;麻点腐蚀;点[腐]蚀，锈斑
4) Corrosion perforation
腐蚀穿孔
1.
We introduce the scaling of the inner wall of the A effect heater's row tube,and corrosion perforation and leakage of the couplings in three effect evaporation system,and give a brief account and summary of the technology of pickling and the partially replacement of the tube's couplings.
介绍了在三效蒸发系统中 ,A效加热器列管内壁结垢和管头腐蚀穿孔、泄漏情况 ,并对酸洗及局部更换列管管头技术作了简述及小
2.
Aiming at corrosion perforation problem of steel power plant pipe within short period,this paper investigates the causes and mechanisms of the corrosion and brings forward feasible and effective protective measures.
针对电厂供水管线钢管短期内产生腐蚀穿孔泄漏现象,研究了发生腐蚀的原因与机理,提出了切实、有效、可行的防护措施,为电厂建设期管线防腐提供了依据。
5) corrosion failure
腐蚀穿孔
1.
The frequent occurrences of corrosion failure of the pipelines of oil gathering and distribution systems in Wennan Oil Field has greatly affected the normal oil field operation.
近年来文南油田油气集输系统管线腐蚀穿孔频繁,严重影响了油田正常生产。
2.
After 10 years operation, the copper tubes experienced fouling and corrosion failure.
运行10年后发生结垢和铜管腐蚀穿孔。
6) pore corrosion
微孔腐蚀
1.
With the effects of humidity, corrosive gas and dust particles in the air, pore corrosion contaminant appears on the pore site on plating surface and the connector reliability is lowered.
通过对长期室内自然暴露的薄镀金样片表面的形貌、腐蚀状况以及成分分析,同时对腐蚀表面不同位置处的直流接触电阻、高频接触阻抗进行测试,从而全面分析表面微孔腐蚀对电接触性能的影响。
补充资料：小孔腐蚀
分子式：
CAS号：
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。
CAS号：
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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