Study on the corrosion inhibition of extractive from Jatropha curcas L seed meal on copper

摘要

This paper study about different effect of the corrosion of copper in different dosage of Jatropha curcas L seed meal extract in different PH, NaCl and different compound agent. Finally，matching the corrosion effect to the best concentration of the inhibitor with weight-loss method. With the change of Jatropha curcas seedcake extract dosage, the effect has no obvious changes in different PH. With the increase of Jatropha curcas seedcake extract dosage. The higher the concentration of extracting agent to extract effect is better in different NaCl. When Jatropha curcas seedcake extract respectively compounded with 2 kinds of reagent, it enhance the corrosion inhibition of copper. It is shown that best inhibition effect of Jatropha curcas L seed meal extract concentration is 10%, the corrosion rate is 96.38%. And Urotropine effect is not very good, but the corrosion rate can be increased from 25.46% to 75.43%.