Corrosion of Friction Rock Stabilizer Steels in Underground Coal Mine Waters

摘要

In an effort to better predict the useful service life of friction rock stabilizer mine roof bolts in coal mine environments, the Bureau of Mines has evaluated the corrosion resistance of stabilizer steels in air -satuated and deaerated waters from seven Eastern and Midwestern underground coal mines. Accelerated electrochemical corrosion tests were used to estimate corrosion tests were used to estimate corrosion rates for the two high-strength, low-alloy (HSLA) steels used to fabricate Split Set stabilizera and for galvanized steel. Long-term static-immersion weight-loss tests were also conducted with the HSLA steels.