采用质量损失法研究了化学镀Ni-P镀层及对比材料316L在单相流(20% H2SO4)和两相流(20% H2SO4+ 20 g/L黄砂)中冲刷腐蚀行为,以及电化学方法研究了介质温度对Ni-P镀层及316L电化学行为的影响.结果表明,介质温度升高(20 ~80℃),Ni-P镀层腐蚀速率、冲刷腐蚀速率和冲刷腐蚀交互作用增大,但与316L和300℃热处理的晶态镍磷镀层相比,介质温度对镀态和200 ℃热处理的非晶镍磷镀层影响较小.镀态镍磷和316L的腐蚀电流密度随介质温度升高而增大,容抗弧半径则随介质温度升高而减小.Ni-P镀层腐蚀和单相流冲刷腐蚀机制是均匀腐蚀,而两相流中则为均匀腐蚀+犁削机制.
参考文献
[1] | J. F. Flores;A. Neville;N. Kapur;A. Gnanavelu .An experimental study of the erosion-corrosion behavior of plasma transferred arc MMCs[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2009(Pt.1):213-222. |
[2] | V. A. D. Souza;A. Neville .Aspects of microstructure on the synergy and overall material loss of thermal spray coatings in erosion-corrosion environments[J].Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear,2007(1/6):339-346. |
[3] | 张安峰,王豫跃,邢建东,李长久.两种涂层和两种钢在液/固两相流中冲刷与腐蚀的交互作用[J].金属学报,2004(04):411-415. |
[4] | 何素珍,黄新民.热处理温度对化学沉积Ni-Cu-P涂层腐蚀冲蚀性能的影响[J].材料热处理学报,2010(06):133-137. |
[5] | Barik RC;Wharton JA;Wood RJK;Stokes KR;Jones RL .Corrosion, erosion and erosion-corrosion performance of plasma electrolytic oxidation (PEO) deposited Al2O3 coatings[J].Surface & Coatings Technology,2005(2/3):158-167. |
[6] | Purandare YP;Stack MM;Hovsepian PE .Velocity effects on erosion-corrosion of CrN/NbN "superlattice" PVD coatings[J].Surface & Coatings Technology,2006(1/2):361-370. |
[7] | de Damborenea J;Navas C;Garcia JA;Arenas MA;Conde A .Corrosion-erosion of TiN-PVD coatings in collagen and cellulose meat casing[J].Surface & Coatings Technology,2007(12):5751-5757. |
[8] | 宋锦福,郭凯铭,赵子辉.成分和结构对Ni-W-P镀层抗冲刷腐蚀性能的影响[J].中国有色金属学报,1998(03):379-384. |
[9] | 方信贤,白允强,王章忠.J4不锈钢及化学镀Ni-P和Ni-Cu-P镀层在液-固两相流中的冲刷腐蚀行为[J].金属学报,2010(02):239-244. |
[10] | 赵卫民,王勇.电化学阻抗谱法研究热处理对低碳钢镍基合金涂层腐蚀行为的影响[J].金属学报,2008(09):1125-1130. |
[11] | 曹楚南.电化学阻抗谱导论[M].北京:科学出版社,2002 |
[12] | 杨燕,李自力,文闯.交流电对X70钢表面形态及电化学行为的影响[J].金属学报,2013(01):43-50. |
[13] | 张可敏,杨大智,邹建新,董闯.316L不锈钢强流脉冲电子束表面改性研究Ⅱ.在模拟体液中的腐蚀行为[J].金属学报,2007(01):71-76. |
[14] | 刘宏,郭荣新,宗云,卞建胜,李莎.化学沉积Ni-P/Ni-W-P合金的热处理晶化及磨损行为[J].材料热处理学报,2011(02):139-145. |
[15] | 方信贤.化学镀Ni-P和Ni-Cu-P合金耐蚀性研究[J].腐蚀科学与防护技术,2010(02):109-112. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%