论文部分内容阅读
研究了不同成分和结构的NiWP合金镀层的硬度、耐蚀性及在液固双相流中的抗冲刷腐蚀性能,并对镀层表面膜进行了XPS分析,结果表明:镀层中钨含量的增加有利于提高镀层的硬度、耐蚀性和抗冲刷腐蚀性能。由Ni(OH)2,WO3,Ni3(PO4)2组成的表面膜具有较强的修复能力,这是使镀层具有优异抗冲刷腐蚀性能的主要因素之一。400℃以下较低温度的热处理提高了镀层的硬度,但削弱了镀层的耐蚀性,然而对抗冲刷腐蚀性能却略有提高。
The hardness and corrosion resistance of NiWP alloy coatings with different compositions and structures were studied. The corrosion resistance of the NiWP alloy coatings in liquid-solid two-phase flow was studied. XPS analysis of the coating surface films showed that the coating tungsten Increasing the content is conducive to improving the hardness of the coating, corrosion resistance and erosion erosion resistance. The surface film composed of Ni (OH) 2, WO3 and Ni3 (PO4) 2 has stronger repairing ability, which is one of the main factors that make the coating have excellent erosion resistance. The lower temperature below 400 ℃ heat treatment increased the hardness of the coating, but weakened the corrosion resistance of the coating, however, corrosion resistance erosion erosion is slightly improved.