Experimental determination of the critical hydrogen peroxide ion concentration for titanium alloys in alkaline hydrogen peroxide solution

Outi Hyökyvirta

Research output: Contribution to journalArticleScientificpeer-review

4 Citations (Scopus)

Abstract

The first assumption was that titanium and its alloy should have excellent corrosion resistance in alkaline hydrogen peroxide bleaching. However, the pulp mill experience of the corrosion resistance of titanium alloy conflict partly with the earlier knowledge. The corrosion of both titanium and titanium alloy was studied in alkaline hydrogen peroxide environment. The cell was equipped with a water circulation loop and chemistry monitoring system. The monitoring system adjusted the pH‐value, hydrogen peroxide concentration and temperature of the solution.

Both titanium and titanium alloy dissolved by uniform corrosion in passive state due to the hydrogen peroxide ion. This ion can destroy protective dioxide layer of titanium. The critical concentration of hydrogen peroxide ion could be estimated experimentally and for both titanium and titanium alloy it was 0.008 ± 0.008 M at 80 °C in alkaline hydrogen peroxide ion environment.

However, theoretically based on thermodynamic no critical hydrogen peroxide concentration could be found whereas traces of this ion can attack titanium and titanium alloys. The experimentally determined corrosion rate of both titanium and titanium alloy seems to follow an exponential law as a function of hydrogen peroxide ion concentration, which could be explained by the Arrhenius equation.

Original languageEnglish
Pages (from-to)376 - 387
Number of pages12
JournalMaterials and Corrosion
Volume48
Issue number6
DOIs
Publication statusPublished - 1997
MoE publication typeA1 Journal article-refereed

Fingerprint

Titanium alloys
Hydrogen peroxide
hydrogen peroxide
Hydrogen Peroxide
titanium
Titanium
Ions
ion
corrosion
Corrosion resistance
Corrosion
monitoring system
Monitoring
Paper and pulp mills
Bleaching
Corrosion rate
Thermodynamics
bleaching
Water
mill

Cite this

@article{cb44fccfb2854513a1b95b552c789790,
title = "Experimental determination of the critical hydrogen peroxide ion concentration for titanium alloys in alkaline hydrogen peroxide solution",
abstract = "The first assumption was that titanium and its alloy should have excellent corrosion resistance in alkaline hydrogen peroxide bleaching. However, the pulp mill experience of the corrosion resistance of titanium alloy conflict partly with the earlier knowledge. The corrosion of both titanium and titanium alloy was studied in alkaline hydrogen peroxide environment. The cell was equipped with a water circulation loop and chemistry monitoring system. The monitoring system adjusted the pH‐value, hydrogen peroxide concentration and temperature of the solution. Both titanium and titanium alloy dissolved by uniform corrosion in passive state due to the hydrogen peroxide ion. This ion can destroy protective dioxide layer of titanium. The critical concentration of hydrogen peroxide ion could be estimated experimentally and for both titanium and titanium alloy it was 0.008 ± 0.008 M at 80 °C in alkaline hydrogen peroxide ion environment. However, theoretically based on thermodynamic no critical hydrogen peroxide concentration could be found whereas traces of this ion can attack titanium and titanium alloys. The experimentally determined corrosion rate of both titanium and titanium alloy seems to follow an exponential law as a function of hydrogen peroxide ion concentration, which could be explained by the Arrhenius equation.",
author = "Outi Hy{\"o}kyvirta",
note = "Project code: VAL47201",
year = "1997",
doi = "10.1002/maco.19970480606",
language = "English",
volume = "48",
pages = "376 -- 387",
journal = "Materials and Corrosion",
issn = "0947-5117",
publisher = "Wiley",
number = "6",

}

Experimental determination of the critical hydrogen peroxide ion concentration for titanium alloys in alkaline hydrogen peroxide solution. / Hyökyvirta, Outi.

In: Materials and Corrosion, Vol. 48, No. 6, 1997, p. 376 - 387.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Experimental determination of the critical hydrogen peroxide ion concentration for titanium alloys in alkaline hydrogen peroxide solution

AU - Hyökyvirta, Outi

N1 - Project code: VAL47201

PY - 1997

Y1 - 1997

N2 - The first assumption was that titanium and its alloy should have excellent corrosion resistance in alkaline hydrogen peroxide bleaching. However, the pulp mill experience of the corrosion resistance of titanium alloy conflict partly with the earlier knowledge. The corrosion of both titanium and titanium alloy was studied in alkaline hydrogen peroxide environment. The cell was equipped with a water circulation loop and chemistry monitoring system. The monitoring system adjusted the pH‐value, hydrogen peroxide concentration and temperature of the solution. Both titanium and titanium alloy dissolved by uniform corrosion in passive state due to the hydrogen peroxide ion. This ion can destroy protective dioxide layer of titanium. The critical concentration of hydrogen peroxide ion could be estimated experimentally and for both titanium and titanium alloy it was 0.008 ± 0.008 M at 80 °C in alkaline hydrogen peroxide ion environment. However, theoretically based on thermodynamic no critical hydrogen peroxide concentration could be found whereas traces of this ion can attack titanium and titanium alloys. The experimentally determined corrosion rate of both titanium and titanium alloy seems to follow an exponential law as a function of hydrogen peroxide ion concentration, which could be explained by the Arrhenius equation.

AB - The first assumption was that titanium and its alloy should have excellent corrosion resistance in alkaline hydrogen peroxide bleaching. However, the pulp mill experience of the corrosion resistance of titanium alloy conflict partly with the earlier knowledge. The corrosion of both titanium and titanium alloy was studied in alkaline hydrogen peroxide environment. The cell was equipped with a water circulation loop and chemistry monitoring system. The monitoring system adjusted the pH‐value, hydrogen peroxide concentration and temperature of the solution. Both titanium and titanium alloy dissolved by uniform corrosion in passive state due to the hydrogen peroxide ion. This ion can destroy protective dioxide layer of titanium. The critical concentration of hydrogen peroxide ion could be estimated experimentally and for both titanium and titanium alloy it was 0.008 ± 0.008 M at 80 °C in alkaline hydrogen peroxide ion environment. However, theoretically based on thermodynamic no critical hydrogen peroxide concentration could be found whereas traces of this ion can attack titanium and titanium alloys. The experimentally determined corrosion rate of both titanium and titanium alloy seems to follow an exponential law as a function of hydrogen peroxide ion concentration, which could be explained by the Arrhenius equation.

U2 - 10.1002/maco.19970480606

DO - 10.1002/maco.19970480606

M3 - Article

VL - 48

SP - 376

EP - 387

JO - Materials and Corrosion

JF - Materials and Corrosion

SN - 0947-5117

IS - 6

ER -