20SiMn在蒸馏水和3%NaCl溶液中的空蚀行为

中国腐蚀与防护学报

2003, Vol. 23

Issue (4): 206-210

研究报告

本期目录 | 过刊浏览

20SiMn在蒸馏水和3%NaCl溶液中的空蚀行为

骆素珍;敬和民;郑玉贵

中科院金属所

CAVITATION EROSION BEHAVIOR OF 20SiMnLOW ALLOY STEEL IN DISTILLED WATERAND 3% SODIUM CHLORIDE SOLUTION

Suzhen Luo;Hemin Jing;Yugui Zheng

中科院金属所

全文: PDF(195 KB)

摘要: 利用磁致伸缩空蚀实验机研究了20SiMn低合金钢在蒸馏水和 3%NaCl溶液中的空蚀行为。利用扫描电镜(SEM)跟踪观察了试样表面的空蚀形貌,测量了静态和空蚀条件下的极化曲线和腐蚀电位变化，分析了腐蚀因素的影响。结果表明：空蚀使20Si Mn的自腐蚀电位正移近200 mV，使电化学腐蚀速率增大54倍；3％NaCl溶液中最大失重率约为蒸馏水中的3倍。两种介质中的空蚀形貌相似，空蚀破坏首先在铁素体相以及相界和晶界发生，在空蚀初期，材料的失重主要来源于铁素体相区的小片剥落，随着空蚀的进行，由于裂纹的扩展和连接导致材料大块脱落。

关键词 ：空蚀, 腐蚀因素, 20SiMn低合金钢, 3％NaCl溶液

Abstract：The cavitation erosion behavior of 20SiMn low alloy steel in both distilled water and 3%NaCl solution was investigated by using a m agnetostrictive-induced cavitation facility.The micrographs of damaged surfaces were observed by scanning electron microscope (SEM).The role of corrosion was an alyzed by the measurements of polarization curve and free-corrosion potential wi th or without cavitation.The results showed that the cavitation shifted free cor rosion potential to the positive direction by 200 mV.The electrochemical corrosi on rate in the presence of cavitation was 53 times higher than that in absence o f cavitation.The maximum cavitation erosion rate in 3%NaCl solution was almost t hree times as fast as that in distilled water,while the morphologies of damaged surfaces in 3%NaCl solution were similar to that in distilled water.The ferrite area,grain boundaries and ferrite-pearlite phase boundaries were preferential si tes for cavitation attack,which attributed to the low hardness of ferrite phase. The mass loss came from the detachment of small pieces in the ferrite area in th e early stage and from the removal of massive chunks by the propagation and conn ection of cracks in both ferrite and pearlite area in the following test period. 

Key words： cavitation erosion corrosion effect 20SiMn low alloy s teel 3%NaCl solution electrochemistry

收稿日期: 2002-02-28

ZTFLH:

TG174.2

通讯作者: 骆素珍 E-mail: ygzheng@jcpm.syb.ac.cn

Corresponding author: Suzhen Luo E-mail: ygzheng@jcpm.syb.ac.cn

	服务

	把本文推荐给朋友
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	骆素珍
	敬和民
	郑玉贵
44.8K

引用本文:

骆素珍; 敬和民; 郑玉贵 . 20SiMn在蒸馏水和3%NaCl溶液中的空蚀行为[J]. 中国腐蚀与防护学报, 2003, 23(4): 206-210 .
Suzhen Luo, Hemin Jing, Yugui Zheng. CAVITATION EROSION BEHAVIOR OF 20SiMnLOW ALLOY STEEL IN DISTILLED WATERAND 3% SODIUM CHLORIDE SOLUTION. J Chin Soc Corr Pro, 2003, 23(4): 206-210 .

链接本文:

https://www.jcscp.org/CN/ 或 https://www.jcscp.org/CN/Y2003/V23/I4/206

[1]WuPeihao,YaoQipeng.StudyonthedamageinhydraulicturbineofLiuLangDong[J].ChineseAbrasionandCavitationinHydraulicMachinery,2001:111
[2]LiuWei,ZhengYugui,JingHeming,YaoZhiming,KeWei.Cavita tionerosionofsingleliqiudandliquid-solidtwo-phasemedium[J].J.Chin.Soc.Corros.Prote.,2001,21(3):286
[3]KarimiA ,MartinJL .Cavitationerosionofmaterials[J].Interna tionalMetalsReviews,1986,31(1):1
[4]EngelbergG ,YahalommJ.Thecorrosionfactorinthecavitationofsteel[J].Corros.Sci.,1992,48(3):206
[5]KwokCT ,ChengFT ,ManHC .Synergisticeffectofcavitationerosionandcorrosionofvariousengineeringalloysin3.5%NaClsolution[J].Mater.Sci.Eng.A ,2000,290:145
[6]OginoK ,Ahida,KishimaS .Effectofamplitudeonerosion-corro sionofmetalsbyvibratorycavitationinrelationtopHofthecavita tionmedia[J].Corrosion,1988,44(2):97
[7]Al-HashemA ,CacerePG ,AbdullahA ,ShalabyHM .Cavitationcorrosionofduplexstainlesssteelinseawater[J].Corrosion,1997,53(2):103
[8]TomlinsonWJ,MouleRT ,BlountGN .Cavitationerosionofpureironindistilledwatercontainingchlorideandchromates[J].Tribol ogyInternational,1988,21(1):21
[9]KwokCT ,ManHC ,LeungLK .Effectoftemperature,pHandsulphideonthecavitationerosionbehaviorofsuperduplexstainlesssteel[J].Wear,1997,211:84
[10]ChangSC ,WengWH ,ChenHC ,LinSJ ,ChungPCK .ThecavitationerosionofFe-Mn-Alalloys[J].Wear,1995,181-183:511
[11]ZhaoKang,GuChenqing,ShenFusan,LuoBingzhe.Studyonmechanismofcombinedactionofabrasionandcavitationerosiononsomeengineeringsteels[J].Wear,1993,162-164:811
[12]LuoSuzhen,ZhengYugui,LiMoucheng,YaoZhiming,KeWei.Effectofcavitationoncorrosionbehaviorof20SiMnlowalloysteelin3%Naclsolution[J].Corrosion,2003,59(7):
[13]ZhangYi,WangZhechang,CuiYan.ThecavitationbehaviorofametastableCr-Mn-Nisteel[J].Wear,2000,240:231
[14]HoffmannMR ,HuaI ,HochemerR .Applicationofirradiationforthedegradationofchemicalcontaminantsinwater[J].UltrasonicsSonochemistry,1996,3(3),S163

[1]	娄延春; 赵芳欣; 于波; 王景成; 熊云龙 . Cr-Ni型水轮机材料电化学腐蚀和抗空蚀行为[J]. 中国腐蚀与防护学报, 2005, 25(5): 312-316 .
[2]	刘景军; 雍兴跃; 林玉珍; 李效玉 . 不锈钢在氯化物介质中的空泡腐蚀行为及机理[J]. 中国腐蚀与防护学报, 2005, 25(3): 157-162 .
[3]	骆素珍 . 1Cr18Mn14N不锈钢在HCl溶液中的空蚀行为[J]. 中国腐蚀与防护学报, 2004, 24(6): 350-355 .
[4]	骆素珍; 敬和民; 郑玉贵 . CrMnN双相不锈钢的空泡腐蚀行为研究[J]. 中国腐蚀与防护学报, 2003, 23(5): 276-281 .
[5]	王飚; 王宇林; 张自华 . 电镀稀土铬提高水轮机的抗空蚀磨损能力[J]. 中国腐蚀与防护学报, 2003, 23(1): 34-37 .
[6]	柳伟; 郑玉贵; 敬和民 . 20SiMn在单相液流和液固双相流中的空蚀行为[J]. 中国腐蚀与防护学报, 2001, 21(5): 286-290 .
[7]	柳伟; 郑玉贵; 姚治铭 . 金属材料的空蚀研究进展[J]. 中国腐蚀与防护学报, 2001, 21(4): 250-255 .
[8]	孙冬柏; 张秀丽; 俞宏英 . 空蚀过程中电化学电位变化规律研究[J]. 中国腐蚀与防护学报, 2000, 20(5): 308-311 .

Viewed

Full text

Abstract

Cited

Shared

Discussed