通过1年的遮雨和未遮雨大气暴露实验,研究了在沈阳大气环境下纯铜的初期腐蚀行为.不同暴露环境下,纯铜的大气腐蚀速率、腐蚀产物组成及其保护性都存在差异.未遮雨暴露条件下,纯铜的大气腐蚀速率较高,尤其在降雨较多的暴露期间,雨水冲刷使纯铜经历了更长的润湿周期,从而显著加速了纯铜的大气腐蚀.不同暴露条件下,纯铜表面形成的大气腐蚀产物主要为Cu2O.遮雨条件下,腐蚀产物的组成还有Cu4SO4(OH)6·H2O和Cu4SO4(OH)6;而未遮雨条件下,雨水的冲刷、溶解作用延缓了Cu4SO4(OH)6·H2O的形成,因而在6个月时腐蚀产物仅为Cu2O;随着暴露周期的延长,12个月后逐渐有Cu4SO4(OH)6·H2O形成.未遮雨暴露的纯铜表面形成了致密的厚腐蚀产物膜,有效地抑制了大气腐蚀的阴极反应,具有更好的保护性.
参考文献
| [1] | Mendoza A R,Corvo F.Corros Sci,2000; 42:1123 |
| [2] | Graedel T E.Corros Sci,1987; 27:721 |
| [3] | Mattsson E.Mater Perform,1982; 21:9 |
| [4] | Leygraf C,Graedel T.Atmospheric Corrosion.New York:John Wiley & Sons,Inc,2000:140 |
| [5] | Rosales B,Vera R,Moriena G.Corros Sci,1999; 41:625 |
| [6] | Vilche J R,Varela F E,Codaro E N,Rosales B M,Moriena G,Fernandez A.Corros Sci,1997; 39:655 |
| [7] | Mendoza A R,Corvo F,G(o)mez A,Gómez J.Corros Sci,2004; 46:1189 |
| [8] | Odnevall I,Leygraf C.Corros Sci,1997; 36:2039 |
| [9] | Lobing R E,Frankenthal R P,Siconolfi D J,Sinclair J D,Stratmann M.J Electrochem Soc,1981; 128:275 |
| [10] | Eriksson P,Johansson L G,Strandberg H.J Electrochem Soc,1993; 140:53 |
| [11] | Veleva L,Quintana P,Ramanauskas R,Pomes R,Maldonado L.Electochim Acta,1996; 41:1641 |
| [12] | Nairn J,Fitzgerald K,Aterns A.In:Apsa A,ed.,Proc Australasian Corrosion Association Conf,Melbourne:Australasian Corrosion Association Inc,1994:168 |
| [13] | Zakipour S,Tidblad J,Leygraf C.J Electrochem Soc,1995; 142:757 |
| [14] | Tidblad J,Leygraf C.J Electrochem Soc,1995; 142:749 |
| [15] | Nairn J,Fitzgerald K P,Atrens A.In:MacLeod I D,St Pennec L,Robbiola L,eds.,Metal 95,London:James &James (Science Publisher) Ltd,1995:86 |
| [16] | Feliu S,Morcillo M,Feliu S Jr.Corros Sci,1993; 34:403 |
| [17] | Feliu S,Morcillo M,Feliu S Jr.Corros Sci,1993; 34:415 |
| [18] | Arroyave C,Lopez F A,Morcillo M.Corros Sci,1995; 37:1751 |
| [19] | Kucera V,Tidblad J,Leygraf C,Henriksen J,Kreislova K,Ashall G,Stckle B.In:Corrosion Prevention Centre of Australasia Inc,ed.,13th Int Corrosion Conf,Melbourne,Australasian Corrosion Association Inc,1996:193 |
| [20] | Nassau K,Gallagher P K,Miller A E,Graedel T.Corros Sci,1987; 27:669 |
| [21] | Odnevall I,Leygraf C.J Electrochem Soc,1995; 142:3682 |
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%