Abstract
IT IS NOT feasible to use tungstate alone as a corrosion inhibitor in industrial cooling water systems due to its low oxidizing ability and high cost. In this paper the co-inhibition characteristics of sodium tungstate are discussed in detail. Potassium permanganate was selected as co-inhibitor for this, and an inhibitor combination of 400ppm sodium tungstate and 200 potassium prmanganate was found optimum. Based on detailed studies carried out under different static and dynamic experimental conditions, different parameters including the effect of oxygen on the inhibition process, passive film strength, effect of inhibitor depletion, deaeration, etc., were investigated. The mechanism of passivation was proposed based on spectral evidence.
| Original language | English |
|---|---|
| Pages | 136-145 |
| Number of pages | 10 |
| Volume | 50 |
| No | 3 |
| Specialist publication | Corrosion Prevention and Control |
| State | Published - Sep 2003 |
| Externally published | Yes |
ASJC Scopus subject areas
- Metals and Alloys