以不同添加量的十六烷基三甲基溴化铵(CTMAB)、N-聚乙烯吡咯烷酮(PVP)以及两者的混合物为分散剂，以自来水、去离子水、膜处理水为分散介质，在不同超声分散时间下分别制备得到了不同的纳米TiN流体，研究了铜片在这些流体中的腐蚀行为。结果表明：当以 CTMAB 为分散剂时能促进铜片的腐蚀，铜片腐蚀速率随 CTMAB 含量的增加而增大，随着超声分散时间的延长先急剧下降，当超过8 min后变化较小，最佳超声分散时间为8 min；当以 PVP 为分散剂时能抑制铜片的腐蚀，铜片的腐蚀速率随着PVP含量的增加而减小，随着超声分散时间的延长先增后降，最佳超声分散时间为6~8 min；当以自来水为分散介质时铜片的腐蚀速率最大，其次为以去离子水为分散介质的，以膜处理水为分散介质的最小。
With different additions of hexadecyltrimethylammonium bromide(CTMAB),N-vinyl pyrrolidone (PVP ) and their mixture as dispersant, with water, deionized water and embrane-treated water as disperse medium, different TiN nanofluids were prepared under conditions of different ultrasonic dispersion time respectively.And then the copper corrosion behavior in the TiN nanofluid was studied.The results show that the copper corrosion was accelerated with CTMAB as dispersant.The copper corrosion rate increased with the increase of with CTMAB content,and first decreased rapidly with the elongation of ultrasonic dispersion time then changed little over 8 min.The optimum ultrasonic dispersion time was 8 min.the copper corrosion was inhibited with PVP dispersant.The copper corrosion rate decreased with the increase of PVP content,and first increased then decreased with the elongation of ultrasonic dispersion time.The optimum ultrasonic dispersion time was 6-8 min.With water as disperse medium,the copper corrosion rate was the largest,followed by the disperse medium of deionized water, and that with embrane-treated water as disperse medium was minimum.
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