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12SiMoVNbAl低合金鋼高溫腐蝕銹層的研究

  • 摘要: 本文主要研究了12SiMoVNbAl低合金鋼耐含硫原油長期高溫腐蝕的銹層之組織結構。用金相及巖相方法觀察了銹層的組織結構。銹層主要分里、外兩層。里層緻密,外層疏松。用電子探針及掃描電鏡觀察并測定了合金元素在基體金屬和銹層中的分布。在高溫腐蝕條件下,該鋼合金元素含量雖然較低,但仍具有較好的抗高溫腐蝕的性能。硅、鋁等合金元素在里銹層中的富集是提高其抗高溫腐蝕性能的主要原因。

     

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