Analisis Pengaruh Komposisi Garam Terhadap Laju Korosi Pada Baja HSS

Abstract

Corrosion, which is the process of metal damage due to environmental factors such as microbes, pH, humidity, temperature, and contaminants from the metal itself, has very destructive properties for metal. Before implementing appropriate control methods, testing is often necessary to determine the appropriate approach. One useful testing method is the spray chamber test, the working principle of which involves creating a mist of corrosive media on the test sample. In this research, HSS steel was used as a test sample. Using a spray chamber test, salt water of various compositions is poured into a container to produce mist, which is produced by a mist maker. The mist is then pushed upwards by a small fan with a current of 12 v and sprayed onto the test specimen over an 8 day period. This tool is useful for determining the corrosion rate of the metal being tested, allowing the determination of how quickly the metal is subject to corrosion, which is useful in selecting materials for construction that are appropriate to environmental conditions. Based on the test results, it can be concluded that the corrosion rate for HSS steel is 0.070 MPY with a salt composition of 500 grams, 0.072 MPY with a salt composition of 750 grams, 0.142 MPY with a salt composition of 1.250 grams, and 0.162 MPY with a salt composition of 1.750 grams.