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ZHANG Min, ZHANG Enhua, ZHI Jinhua, MENG Qiang, ZHANG Haicun. Pitting corrosion resistance of PH stainless steel of FV520B and its welding joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (10): 37-40.
Citation: ZHANG Min, ZHANG Enhua, ZHI Jinhua, MENG Qiang, ZHANG Haicun. Pitting corrosion resistance of PH stainless steel of FV520B and its welding joint[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2012, (10): 37-40.
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Pitting corrosion resistance of PH stainless steel of FV520B and its welding joint

  • 1.

    School of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China

  • 2.

    School of Material Science and Engineering, Xi'an University of Technology, Xi'an 710048, China;Xi'an Shangu Power Co., Ltd, Xi'an 710075, China

  • 3.

    Xi'an Shangu Power Co., Ltd, Xi'an 710075, China

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  • Received Date: August 05, 2011
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  • The corrosion-resistance of the steel FV520B had been tested respectively in the HCl and H2SO4(10%) under the 35℃.The result showed that under the above condition the base metal and the welding welding joint suffered a much more serious pitting corrosion in the HCl(10%) than that in the H2SO4 of the same mass fraction, the chloridion has more serious destructive effect on the passivation film of the stainless steel, which causes the deeper corrosive pitting.while the corrosive effect of 10% mass fraction H2SO4 is relatively inferior, the corrosion products are different either, but under the different corrosive environment, all the corrosive level of the weld joint in the welding point is lower than the HAZ.
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