PENGARUH KONSENTRASI SILIKON OKSIDA (SiO2) DAN ALUMINA (Al2O3) TERHADAP LAJU ABRASI DAN EROSI PADA SUDU GERAK TURBIN AIR

This research is aims to determine the influence of the concentration of Silicon oxide (SiO2) and alumina (Al2O3)contained in the sediments towards the rate of abrasion and erosion on the motion of water turbine methods used in thisstudy by testing in the lab using testing digital microscopy and flow profile to take images of the damage that occurs instainless steel material by varying Silicon oxide (SiO2) and alumina (Al2O3) concentration, namely 90%: 10%, 80%:20%, and 70%: 30%. Based on the testing performed against the weight of the stainless steel material which is donebefore the test and after testing the concentration of SiO2 70% and Al2O3 30% it has a very significant influence with therate of abrasion 0.022 gr/h this indicates that there is a mass of lost resulting of the abrasion that occurs in the material.The damage that occurs in stainless material steel in the form of abrasion and erosion due to the collision of the waterthat has been mixed with the concentration of Silicon oxide (SiO2) and alumina (Al2O3)