03798nam a2200265 a 4500 vtls000045538 KUKTEM 20251114204425.0 100504t2009 my a f m 000 0 eng d THE0005901(Local) 201905141211 aida 201107132317 VLOAD 201005041225 ida 201005041224 ida 201005041221 ida UMP TA467 .I94 2009 rs Bc. Nurul Izham Mohd Yusof Corrosion behavior of stainless steels 304 and aluminum alloys 6061 : effect of PH variation / Nurul Izham Bin Mohd Yusof Corrosion behavior of stainless steels 304 and aluminum alloys 6061 : effect of PH variation [electronic resource] Kuantan, Pahang : UMP, 2009 xiv, 56 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Mechanical Engineering) -- Universiti Malaysia Pahang - 2009 Bibliography : p. 50-52 Mechanical and physical properties. Instead alloys, however both materials can be attacked by corrosion which it definitely contributes to the depletion of our natural resources. The main objectives of this study were to observe the corrosion behavior of stainless steel 304 and Aluminum Alloys 6061 under variation of ph and to investigate the effect of ph variation on the surface and microstructure of stainless steel 304 and Aluminum Alloys 6061. This study was conducted by following the scopes of this project includes the sample preparation, cleaning procedure before and after test, exposure to actual condition, surface and microstructure observation using Scanning Electron Microscopy (SEM) and corrosion rate analysis by weight loss method. Under pH variation, there are three types medium of test used include acidic by Nitric Acid, alkaline by Sodium Hydroxide and Neutral by distilled water. Each sample undergoes environmental exposure for a week before the surface morphology investigation was conducted. From the experimental result during test day, there are changes in color medium of test (Nitric acid, Sodium hydroxide and distilled water) when testing both materials under variation of pH. The surface morphology of Stainless Steels and Aluminum Alloys had been observed using SEM for materials characterization. Corrosion rate was determined for all samples. It was found that Aluminum Alloy 6061 posses the highest rate of corrosion; 208.69mpy in acidic (HNO3) followed by alkaline (NaOH); 40.98mpy and lastly neutral (Distilled Water); 29.00mpy.For Stainless Steels 304, the highest corrosion rates occur in medium of Nitric acid which was 35.30 mpy while the lowest corrosion rates occur in medium of distilled water which was 2.05 mpy. The corrosion rate in medium of Sodium Hydroxide was about 7.22 mpy. Any features of corrosion failure give significant clue of the possible corrosion factor. This article details a proven approach to properly determining the effects of the pH variation and material types to the corrosion rate, and includes surface microstructure of the most common corrosion types, including crevice corrosion, pitting, and intergranular. In conclusion, pH variation influence the rate of corrosion. Because of passivation and high chromium contents, it forms a barrier or protective film on the surface and microstructure of AISI 304 thus decrease the corrosion rate compare to AA 6061. Hence, AISI 304 was proves to be the most protective sample and corrosion durable. Also, it may suggest that for engineering application under variation of pH, AISI 304 is highly recommended. Corrosion and anti-corrosives Stainless steel 0 0 0 1 20000 20000 2019-09-04 0 TA467 .I94 2009 rs Bc. 0000044421 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 4234 | TA467 .I94 2009 rs Bc. 0000044422 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1791 1797 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5040*5200*6500*6501*9992