Felix Lampert

4 Questions 3 Answers 0 Followers

Questions related from Felix Lampert

Why is the pH during boiler feed water conditioning typically set to 9?

Typically the pH of BFW is conditioned to 9. According to e.g. the ASM handbook, the corrosion rate of iron in water should be constant between a pH of 7 and 9. Wouldn't a pH of 7 be sufficient to...

01 January 2019 8,505 2 View

What is the typical crack propagation rate of nitrate SCC of carbon steel?

I am investigating a nitrate SCC failure (mechanism is confirmed) in a heat exchanger. The temperature of the system is approx. 90 - 100 ºC and the tubes are manufactured from a carbon steel....

10 October 2018 892 4 View

Can water conditioning with carbohydrazide lead to carbonate SCC of high strength steel?

I am thinking about using a carbohydrazide conditioner for a cooling water circuit at approx. 160 ºC. The exposed material is a high strength steel under tensile stress. I am aware that the...

09 September 2018 7,602 4 View

How does the Open Circuit Potential change when measured over a coating?

When measuring OCP over an inert thin film coating (e.g. silica on steel) most people measure a positive shift in OCP. These coatings are seldom defect-free and from our understanding the OCP over...

05 May 2016 8,390 2 View