Studi Korosi Pada Baja Karbon Astm A516 Grade 70 Menggunakan Metode Korosi Benam Garam Dengan Penambahan Sampah Dan Biomasa

Syaadah, Silvia Mutimmatus (2025) Studi Korosi Pada Baja Karbon Astm A516 Grade 70 Menggunakan Metode Korosi Benam Garam Dengan Penambahan Sampah Dan Biomasa. Masters thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penambahan sampah dan biomassa pada program co-firing dapat mempercepat korosi akibat kandungan alkali klorida. Penelitian ini bertujuan untuk mengkaji perilaku korosi dengan metode korosi benam, yaitu sampel dibenamkan dalam campuran serbuk fly ash dan biomassa atau sampah selama 100 jam pada temperatur 600°C dan 700°C. Variasi persentase sampah dan biomassa yang digunakan adalah 2%, 5%, dan 10%. Analisis XRD dilakukan untuk mengidentifikasi senyawa dan struktur kristal, sementara SEM-EDX digunakan untuk mengamati morfologi permukaan, lapisan oksida, serta distribusi unsur. Analisis XRF digunakan untuk menentukan komposisi unsur dan senyawa kimia pada bahan uji korosi. Hasil penelitian menunjukkan bahwa penambahan 10% sampah pada temperatur 700°C menghasilkan laju korosi tertinggi sebesar 4,79 mm/tahun, menunjukkan ketahanan korosi yang buruk. Penambahan 10% biomassa pada temperatur yang sama menghasilkan laju korosi sebesar 3,77 mm/tahun. Korosi akibat penambahan sampah lebih parah dibandingkan biomassa karena kandungan klorin yang lebih tinggi, membentuk lapisan oksida yang lebih tebal, berpori, dan retak sehingga menyebabkan spalasi. Lapisan oksida yang terbentuk dikonfirmasi sebagai oksida logam melalui analisis EDS dan XRD.
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The addition of waste and biomass in co-firing programs can accelerate corrosion due to the presence of alkali chlorides. This study investigates corrosion behavior using the embedded corrosion method, where samples are embedded in a mixture of fly ash and biomass or waste powder for 100 hours at 600°C and 700°C. Variations in waste and biomass content of 2%, 5%, and 10% were applied. XRD analysis was used to identify compounds and crystal structures, while SEM-EDX characterized surface morphology, oxide layers, and elemental distribution. XRF analysis determined the elemental and chemical composition of the corrosion test materials. The results showed that the addition of 10% waste at 700°C resulted in the highest corrosion rate of 4.79 mm/year, indicating poor corrosion resistance. Similarly, adding 10% biomass at 700°C produced a corrosion rate of 3.77 mm/year. Waste-induced corrosion was more severe than biomass due to its higher chlorine content, forming thicker, porous, and cracked oxide layers that led to spallation. The oxide layers were confirmed to be metal oxides through EDS and XRD analyses.

Item Type:	Thesis (Masters)
Uncontrolled Keywords:	Benam Garam, Biomassa, Co-firing, Korosi, Sampah,Biomass, Co-firing, Corrosion, Embedded Corrosion, Waste.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA462 Metal Corrosion and protection against corrosion
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis
Depositing User:	Silvia Mutimmatus Syaadah
Date Deposited:	30 Jan 2025 02:08
Last Modified:	30 Jan 2025 02:08
URI:	http://repository.its.ac.id/id/eprint/117074

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