THE INFLUENCE OF 1-(2-PYRIDYLAZO)-2-NAPHTHOL (PAN) ON THE CORROSION OF TITANIUM IN 10 N SULFURIC-ACID-SOLUTION

Authors
JIANG ZY WANG YT HU Q HUANG SY
Citation
Zy. Jiang et al., THE INFLUENCE OF 1-(2-PYRIDYLAZO)-2-NAPHTHOL (PAN) ON THE CORROSION OF TITANIUM IN 10 N SULFURIC-ACID-SOLUTION, Corrosion science, 37(8), 1995, pp. 1245-1252
Citations number
11
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Corrosion science → ACNP
ISSN journal
0010938X
Volume
37
Issue
8
Year of publication
1995
Pages
1245 - 1252
Database
ISI
SICI code
0010-938X(1995)37:8<1245:TIO1(O>2.0.ZU;2-A
Abstract
The influence of several naphthol derivatives on the corrosion behavio r of titanium in 10 N H2SO4 solution has been studied by measuring the weight loss and analysing the polarization curves, electrode impedanc e, voltammograms and UV-visible spectra. 1-(2-pyridylazo)-2-naphthol ( PAN) is an excellent inhibitor for titanium corrosion in concentrated acid solution at room temperature, 35 degrees C and 55 degrees C, even at a low concentration of 2 mM. Its inhibition efficiency is higher t han that of some well-known organic inhibitors for titanium corrosion at high temperature. The stability of PAN as an inhibitor and the infl uence of the surface state of titanium on the inhibition efficiency of PAN have also been investigated.