Faizal, Faizal (2026) Pengembangan Sifat Mekanik Dan Ketahanan Korosi Paduan Entropi Tinggi Berbasis Ti Nb Mo Cr Al Di Dalam Larutan Cairan Tubuh Sebagai Material Implan. Masters thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Manusia kerap menghadapi masalah serius akibat penyakit atau kecelakaan. Kecelakaan sering menyebabkan korban mengalami gangguan fungsi tubuh, atau memerlukan perawatan medis yang serius. Dalam dunia medis, penggunaan material implan menjadi salah satu solusi yang sangat penting untuk mengganti, atau memperbaiki sistem jaringan biologis yang rusak atau hilang. Penelitian ini dilakukan untuk mengembangkan High Entropy Alloy (HEA) TiNbMoCrAl sebagai bahan implan yang disimulasikan dalam larutan ringer laktat. paduan dibuat dengan cara meleburkan material TiNbMoCrAl dengan menggunakan single arc melting furnace dalam atmosfer Argon dengan kemurnian tinggi dan elektroda tungsten, kemudian dilakukan proses homogenisasi pada suhu 900 °C dengan variasi waktu penahanan selama 6 dan 8 jam. Hasil XRD menunjukkan bahwa High Entropy Alloy (HEA) TiNbMoCrAl pada kondisi as-cast memiliki fasa BCC ganda, dan disertai ada puncak tambahan berupa FCC. Sementara itu, High Entropy Alloy (HEA) TiNbMoCrAl yang dihomogenisasi pada suhu 900 °C selama 6 jam masih menghasilkan fasa BCC ganda, dan fasa tunggal BCC terbentuk pada suhu 900 °C selama 8 jam. Nilai kekerasan menurun dari 626.6 HV pada kondisi as-cast menjadi 454.0 HV pada homogenisasi 6 jam, dan kembali naik menjadi 499.4 HV pada homogenisasi 8 jam. Hasil pengujian keausan menunjukkan bahwa koefisien gesek pada sampel as-cast sebesar 0.174 meningkat menjadi 0.448 pada homogenisasi 6 jam, kemudian menurun menjadi 0.373 pada homogenisasi selama 8 jam. Selain itu, laju korosi menurun dari 0.023 mm/year menjadi 0.001 mm/year dan mencapai nilai terendah 0.0008 mm/year pada homogenisasi selama 8 jam.
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Humans often face serious problems due to illness or accidents. Accidents often cause victims to experience impaired bodily functions or require serious medical treatment. In the medical world, the use of implant materials is one of the most important solutions to replace or repair damaged or lost biological tissue systems. This research was conducted to develop High Entropy Alloy (HEA) TiNbMoCrAl as an implant material simulated in ringer lactate solution. The alloy was made by melting TiNbMoCrAl material using a single arc melting furnace in a high-purity Argon atmosphere and tungsten electrodes, then a homogenization process was carried out at a temperature of 900 °C with varying holding times of 6 and 8 hours. XRD results showed that High Entropy Alloy (HEA) TiNbMoCrAl in the as-cast condition had a double BCC phase, and was accompanied by an additional peak in the form of FCC. Meanwhile, High Entropy Alloy (HEA) TiNbMoCrAl homogenized at 900 °C for 6 hours still produced a double BCC phase, and a single BCC phase was formed at 900 °C for 8 hours. The hardness value decreased from 626.6 HV in the as-cast condition to 454.0 HV at 6 hours of homogenization, and increased again to 499.4 HV at 8 hours of homogenization. The results of the wear test showed that the friction coefficient of the as-cast sample was 0.174, increased to 0.448 at 6 hours of homogenization, then decreased to 0.373 at 8 hours of homogenization. In addition, the corrosion rate decreased from 0.023 mm/year to 0.001 mm/year and reached the lowest value of 0.0008 mm/year at 8 hours of homogenization.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Paduan entropi tinggi, Paduan Titanium, Korosi, Biomaterial High entropy alloy, Titanium alloy, Corrosion, Biomaterial. |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 27101-(S2) Master Thesis |
| Depositing User: | Faizal Faizal |
| Date Deposited: | 02 Feb 2026 02:16 |
| Last Modified: | 02 Feb 2026 02:16 |
| URI: | http://repository.its.ac.id/id/eprint/131235 |
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