Author Archive: corrosionguru
corrosionguru
March 20, 2016
One thing is often overlooked in the Cathodic protection design is electrical continuity of the pipeline cathodic protection system. Similar to the function of electrical isolation, the current continuity is a key to make sure the current flow to wherever it…
Read more
corrosionguru
March 16, 2016
Field application of coal tar and asphalt enamel This was applied in a manner similar to the coating of pipeline by wrapping hot enamel and fabric around the joint Liquid applied field joint coatings (solvent free two pack liquid epoxy…
Read more
corrosionguru
March 15, 2016
When under stress, metals may become susceptible to liquid metal embrittlement (LME). Different to most of corrosion mechanism, LME is usually not involving with electrochemical reactions. Liquid metal embrittlement (LME) is not being classified as SCC as well. However, the…
Read more
corrosionguru
March 12, 2016
Mitigation of DC Stray Current Interference in Cathodic Protection Any stray current discharging from the buried pipeline to earth will lead to corrosion. The amount of current discharged iss controlled by many factors: coating, potential gradient, current density etc. The…
Read more
corrosionguru
March 11, 2016
Intergranular corrosion for Stainless Steel Austenitic Stainless Steel For austenitic stainless steel, the cause of intergranular corrosion is precipitation of chromium carbides. At temperature above 1035oC, chromium carbides are completely dissolved in austenitic stainless steel. However, the steels are slowly…
Read more