Green inhibitors. Rare earth based systems

被引：18

作者：

Aballe, A

Bethencourt, M

Botana, FJ

Marcos, M

Perez, J

Rodriguez, MA

机构：

[1] Univ Cadiz, Fac Ciencias, Dipartimento Ciencia Mat & Ingn Met & Quim Inorga, E-11510 Puerto Real, Spain

[2] Univ Cadiz, Escuela Super Ingn, Dipartimento Ingn Mecan & Diseno Ind, E-11003 Cadiz, Spain

来源：

REVISTA DE METALURGIA | 1997年 / 33卷 / 06期

关键词：

rare earths; green inhibitors; uniform corrosion; fitting; seawater;

D O I：

10.3989/revmetalm.1997.v33.i6.770

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Lanthanum, Cerium and Samarium chlorides have been investigated as uniform and pitting corrosion inhibitors of AISI 434 and AISI 304 stainless steels and AA 5083 Al-Mg alloy in 3.5 % NaCl aerated aqueous solutions. Their inhibitor power was evaluated by using electrochemical techniques such as Linear and Cyclic Polarisation. In each case, the highest protection degree was found in the solution dopped with 500 ppm of CeCl3. Similar results were obtained for additions of 500 ppm of LaCl3. Scanning Electron Microscopy and Energy Dispersive Spectroscopy allowed us to confirm the cathodic nature of the inhibition process.

引用

页码：363 / 369

页数：7

共 27 条

[1] Studies of the formation of cerium-rich protective films using x-ray absorption near-edge spectroscopy and rotating disk electrode methods [J].