Review Pengaruh Penambahan Hydroxyapatite Terhadap Morfologi dan Laju Degradasi Paduan Magnesium yang Dioksidasi dengan Plasma Electrolytic Oxidation untuk Aplikasi Biodegradable Implant

Deby, Maureen Shania (2020) Review Pengaruh Penambahan Hydroxyapatite Terhadap Morfologi dan Laju Degradasi Paduan Magnesium yang Dioksidasi dengan Plasma Electrolytic Oxidation untuk Aplikasi Biodegradable Implant. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Magnesium dan paduannya merupakan material yang sedang dikembangkan sebagai bahan biodegradable implan. Biodegradable implan didesain sebagai material yang ringan, ketahanan aus yang baik, kekuatan modulus elastis, kekuatan tarik, biodegradable, resistivitas korosi yang baik dan dapat beradaptasi di lingkungan fisiologis. Namun sifat kelarutan yang tinggi pada magnesium menjadi kelemahan, dimana dapat menimbulkan laju degradasi yang cepat dalam pH fisiologis. Plasma Electrolytic Oxidation (PEO) merupakan salah satu metode pelapisan logam yang membentuk lapisan oksida yang sangat adhesi pada substrat. Lapisan yang dihasilkan memiliki sifat tahan aus dan korosi baik serta sifat listrik yang baik dan stabilitas termal yang tinggi. Laju degradasi yang cepat harus ditanggulangi salah satunya dengan menggunakan hydroxyapatite sebagai aditif. Tujuan paper review ini dilakukan untuk menganalisis pengaruh penambahan konsentrasi hydroxyapatite terhadap morfologi dan laju degradasi pada paduan magnesium dengan metode Plasma Electrolytic Oxidation untuk Biodegradable Implant. Pengujian ditinjau dari pengujian SEM, polarisasi, EIS dan Immersion. Didapatkan bahwa penambahan konsentrasi hydroxyapatite dapat berpengaruh untuk morfologi yaitu semakin besar penambahan hydroxyapatite maka jumlah dan ukuran pori menurun, lapisan lebih seragam dan menurunkan ketebalan. Paduan Magnesium dilapisi hydroxyapatite, lapisan memiliki ketebalan 33,1 ± 2,1 μm dan ukuran pori 4-7 μm dengan penambahan konsentrasi hydroxyapatite 20 g/L. Didapatkan bahwa porositas jauh lebih sedikit dalam lapisan dengan penambahan hydroxyapatite dibandingkan dengan lapisan tanpa hydroxyapatite. Penambahan hydroxyapatite berpengaruh pada laju degradasi bahwa semakin besar penambahan hydroxyapatite maka corrosion rate akan menurun. Hasil degradasi yang terbaik oleh dengan Corrosion Rate = 0,1 x 10-10 mm/yr pada penambahan hydroxyapatite 20 g/L. Substrat magnesium berlapis hydroxyapatite menunjukkan menurunkan laju degradasi pada in vivo, peningkatan cytocompatibility dan mempunyai mineral alami yang karakteristiknya hampir sama dengan tulang manusia. ====================================================================================================================== Magnesium and its alloys are materials that are being developed as biodegradable implant materials. Biodegradable implants are designed as lightweight materials, good wear resistance, elastic modulus strength, tensile strength, biodegradable, good corrosion resistivity and can adapt in physiological environments. However, the high solubility of magnesium is a weakness, which can lead to a rapid rate of degradation in physiological pH. Plasma Electrolytic Oxidation (PEO) is a metal coating method that forms a high adhesion oxide layer on the substrate. The resulting coating has excellent wear and corrosion resistance as well as good electrical properties and high thermal stability. Rapid degradation rates must be overcome by using hydroxyapatite as an additive. The purpose of this paper is to analyze the effect of adding hydroxyapatite concentration to the morphology and degradation rate of magnesium alloys using the Plasma Electrolytic Oxidation method for Biodegradable Implants. Testing is reviewed from SEM, polarization, EIS, and Immersion testing. It was found that the addition of hydroxyapatite concentration can affect morphology, namely the greater addition of hydroxyapatite, the number and size of pores decreases, layers are more uniform and decreases thickness. Magnesium alloy coated with hydroxyapatite, the layer has a thickness of 33.1 ± 2.1 μm and pore size of 4-7 μm with the addition of a hydroxyapatite concentration of 20 g / L. It was found that porosity is much less in layers with the addition of hydroxyapatite compared to layers without hydroxyapatite. The addition of hydroxyapatite affects the rate of degradation that the greater the addition of hydroxyapatite, the corrosion rate will decrease. The best degradation results by the Corrosion Rate = 0.1 x 10-10 mm/yr on the addition of hydroxyapatite 20 g/L. Magnesium hydroxyapatite-coated substrate has been shown to reduce the rate of degradation in vivo, increase cytocompatibility, and have natural minerals that are almost identical to human bones.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Hydroxyapatite, Implant, Magnesium Alloy, Plasma Electrolytic Oxidation, Hydroxyapatite, Implant, Paduan Magnesium, Plasma Electrolytic Oxidation
Subjects: T Technology > TS Manufactures
T Technology > TS Manufactures > TS176 Manufacturing engineering. Process engineering (Including manufacturing planning, production planning)
Divisions: Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: Maureen Shania Deby
Date Deposited: 12 Aug 2020 07:45
Last Modified: 12 Aug 2020 23:44
URI: https://repository.its.ac.id/id/eprint/77704

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