Zn(H_2PO_4)_2-N[CH_2CH_2OPO(OH)_2]_3对碳钢的协同效应与缓蚀机理研究  

SYNERGISTIC EFFECT AND INHIBITION MECHANISM OF Zn(H_2PO_4)_2- N[CH_2CH_2OPO(OH)_2]_3 FOR CARBON STEEL

作　　者：郭良生[1] 黄霓裳[1] 余兴增[1] 邱富荣[1] 石小燕[1] 

机构地区：[1]中国科学院福建物质结构研究所二部,厦门361012

出　　处：《腐蚀与防护》2000年第4期160-163,共4页Corrosion & Protection

摘　　要：采用失重法、表面观察法、极化曲线法、氩离子刻蚀法和 XPS分析法研究 Zn(H2 PO4 ) 2 - N[CH2 CH2 OPO(OH) 2 ]3在海水中对碳钢的协同效应与缓蚀机理。结果发现 :50 % Zn(H2 PO4 ) 2 +50 % N[(CH2 CH2 OPO(OH) 2 ]3(XM- 30 3)在海水中对碳钢具有明显的协同缓蚀效应。 50 % Zn(H2 PO4 ) 2 +50 % N[CH2 CH2 OPO(OH) 2 ]3(XM- 30 3)主要为阴极抑制型缓蚀剂。缓蚀膜主要为沉积膜 ,膜层的主要组分有 Zn3(PO4 ) 2 、Fe PO4 、Fe2 O3和 N[CH2 CH2 OPO(OH) 2 ]3等。The synergistic effect and inhibition mechanism of Zn(H 2PO 4) 2 N[CH 2CH 2OPO(OH) 2] 3 for carbon steel in sea water were studied by means of weight loss, surface observation, polarization curves, argon ion sputtering and XPS. The results revealed that 50% Zn(H 2PO 4) 2+ 50% N[CH 2CH 2OPO(OH) 2] 3 (XM 303) had obvious synergistic inhibition effect on corrosion of carbon steel in sea water. 50% Zn(H 2PO 4) 2+50% N[CH 2CH 2OPO(OH) 2] 3(XM 303) mainly was a cathodic inhibitor. The inhibitor film which was consisted of Zn(PO 4) 2 FePO 4、Fe 2O 3 and N[CH 2CH 2OPO(OH) 2] 3 mainly was a precipitation film.

关 键 词：缓蚀剂 Zn(H2PO4)2 协同效应 缓蚀机理 碳钢 

分 类 号：TG174.42[金属学及工艺—金属表面处理]