R. Pratama, D. Pratiwi, Nurhabibah Paramitha Eka Utami
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引用次数: 0
摘要
对海洋环境建设中的腐蚀危害进行了研究。ASTM A36可广泛用于各种工业部门和海上石油开采。本研究的主要目的是利用Bangka Barat Regency, Bangka Belitung Islands的海水作为腐蚀介质，通过布氏硬度测试、失重和腐蚀速率的测量，分析不同浸泡时间对腐蚀行为ASTM A36的影响，并通过微观结构的形成对所得数据进行验证。结果表明，浸渍时间为144小时时，合金的腐蚀速率最高，为27.97 Mpy，硬度值最低，为136,924 BHN。显微组织观察发现，由于试样腐蚀过程中缺氧，随着浸泡时间的增加，黄褐色和黑色(磁性Fe3O4)腐蚀模式增加。
THE EFFECT OF TIME VARIATION ON CORROSION BEHAVIOUR OF ASTM A36 IN SEAWATER FROM WEST BANGKA OF BANGKA BELITUNG ISLANDS, INDONESIA
Corrosion hazards in marine environmental construction have been studied. ASTM A36 can be widely used in various industrial sectors and oil extracted offshore. The main objective of this study is to analyze the influence of variation immersion time to corrosion behaviour ASTM A36 by using seawater from Bangka Barat Regency, Bangka Belitung Islands as a corrosive media by performing Brinell hardness test, measurement of weight loss and corrosion rate, and and confirm the data obtained with the formed of microstructure. The results revealed that immersion time of 144 hours produced the highest corrosion rate of 27.97 Mpy and but has the lowest hardness number 136,924 BHN. Microstructural observations found the presence of brownish yellow and black (magnetic Fe3O4) corrosion patterns increased along with the increasing immersion time due to the lack of oxygen concentration during the specimen corrosion process.
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