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利用质量损失法,研究了单相、两相流中65Mn和316L不锈钢的化学腐蚀行为。结果表明:65Mn和316L不锈钢在单相、两相流中的冲刷腐蚀速率随温度升高而变大,随理论速率减小而增大。相同条件下,65Mn的质量损失速率比316L不锈钢大。两相流中的腐蚀机制与静态和单相流中的不同,为均匀腐蚀、轻微选择腐蚀、切削,以及轻微塑性腐蚀共同作用的结果,Ni-P镀层能减缓冲刷腐蚀对试样表面的影响。
Using mass loss method, the chemical corrosion behavior of 65Mn and 316L stainless steel in single-phase and two-phase flow was studied. The results show that the erosion corrosion rates of 65Mn and 316L stainless steel increase with the increase of temperature in single phase and two phase flow, and increase with the decrease of theoretical velocity. Under the same conditions, the mass loss rate of 65Mn is larger than that of 316L stainless steel. The corrosion mechanism in two-phase flow is different from that in static and single-phase flow as a result of uniform corrosion, slight choice of corrosion, cutting, and slight plasticity corrosion. Ni-P coating can reduce the effect of erosion on the surface of the specimen .