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含有Nb、Ce的形狀記憶合金FeMnSiCrNi在3.5%NaCl溶液中的空蝕行為
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Cavitation Behavior of Shape Memory Alloy FeMnSiCrNi Containing Nb, Ce in 3.5% NaCl Solution
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    利用超聲波振動(dòng)儀研究形狀記憶合金Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce在 3.5%NaCl溶液中的空蝕行為，并探討合金在3.5%NaCl溶液中處于靜態(tài)和空蝕情形下的自腐蝕電位和極化曲線。結(jié)果表明，F(xiàn)e-14Mn-6Si-9Cr-5Ni-Nb-Ce合金在3.5%NaCl溶液中呈現(xiàn)優(yōu)異的抗空蝕性能，空蝕率為0.37 mg/h。空化能使Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce合金的自腐蝕電位變負(fù)，變化量為–65 mV。在靜態(tài)和空化兩種條件下，F(xiàn)e-14Mn-6Si-9Cr-5Ni-Nb-C

    Abstract:

    The cavitation erosion of shape memory alloy Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce in 3.5% NaCl solution was investigated by using an ultrasonic vibratory apparatus. Free corrosion potential and polarisation curves of the alloy in 3.5% NaCl solution under quiescent and cavitating condition were studied. The results show that Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce alloy has excellent cavitation erosion resistance in 3.5% NaCl solution, cavitation erosion rate is 0.37 mg/h. Cavitation can shift free corrosion potential of the alloy in the active direction for about –65 mV. Corrosion current of Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce alloy is very low in 3.5% NaCl solution under quiescent and cavitating condition, therefore, Fe-14Mn-6Si-9Cr-5Ni-Nb-Ce alloy shows high corrosion resistance. The relative contribution of electrochemical corrosion rate and pure mechanical erosion-induced corrosion rate to the overall cavitation eroson only amounts to 2.24%

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龍霓東,朱金華.含有Nb、Ce的形狀記憶合金FeMnSiCrNi在3.5%NaCl溶液中的空蝕行為[J].稀有金屬材料與工程,2009,38(7):1169~1173.[Long Nidong, Zhu Jinhua. Cavitation Behavior of Shape Memory Alloy FeMnSiCrNi Containing Nb, Ce in 3.5% NaCl Solution[J]. Rare Metal Materials and Engineering,2009,38(7):1169~1173.]
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  • 收稿日期:2008-08-15
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