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0311-83071805 镇田机械定制生产各类不锈钢储罐,不锈钢酒罐,不锈钢发酵罐
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不锈钢储罐主要材料316不锈钢的腐蚀类型

作者:镇田机械 时间:2019-03-27 15:02
不锈钢储罐主要材料316不锈钢的腐蚀类型 不锈钢耐腐蚀的基本机理主要是钝化膜理论。所谓钝化膜就是在不锈钢的表面产生一层致密的以Cr2〇3为主的薄膜,使不锈钢储罐在各种介质中的腐蚀受 信息摘要:

不锈钢储罐主要材料316不锈钢的腐蚀类型

不锈钢耐腐蚀的基本机理主要是钝化膜理论。所谓钝化膜就是在不锈钢的表面产生层致密的以Cr2〇3为主的薄膜,使不锈钢储罐在各种介质中的腐蚀受阻。然而,在复杂的外部环境和应力条件下,不锈钢仍会受到各种形式的腐蚀作用。影响不锈钢腐蚀的因素分为外部因素和内部因素,其中外部因素包括腐蚀介质的组成、pH值及外部温度和材料的受力情况等;内部因素包括材料的化学成分、显微组织、表面结构等[5]。不锈钢的主要腐蚀破坏形式有点蚀、晶间腐蚀、应力腐蚀等。

不锈钢储罐主要材料316不锈钢的腐蚀类型

1.1点蚀

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不锈钢储罐主要材料316不锈钢的腐蚀类型

1.2晶间腐蚀

JINGJIANFUSHISHIYANZHEJINGLIJIANDEJINGJIEKUOZHANDEZHONGFUSHIXINGSHI。YANGUIBIAOMING,AOSHITIBUXIUGANGCHANSHENGJINGJIANFUSHIDEJILIZHUYAOYOUYIXIAJIZHONG:

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2/CrCCHENDIANYINQIDEJINGJIANFUSHI

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不锈钢储罐主要材料316不锈钢的腐蚀类型

1.3应力腐蚀

YINGLIFUSHIKAILIE(Stress Corrosion Cracking,SCC)SHIGONGCHENGJIEGOU(DAXINGCHUGUAN)CHANGJIANDEFUSHIPOHUAI

XINGSHIZHI,YOUYUQIQIANFUQIJIAOZHANG,NANYITIQIANYUCE,YINERWEIHAIXINGHENDA。

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不锈钢储罐主要材料316不锈钢的腐蚀类型

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