Preparation and characterization of stainless steel 316L/HA biocomposite

Silva, Gilbert; Baldissera, Márcia Regina; Trichês, Eliandra de Sousa; Cardoso, Kátia Regina

doi:10.1590/s1516-14392012005000182

Cited by 21 publications

(14 citation statements)

References 18 publications

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“…Resolvable peaks were observed at 2θ = 37.5°, 43.7°, 64.0° and 77.0°, over the 30-90° detector range. This spectrum matches very closely that reported by Silva et al in their powder diffraction pattern for 316L stainless steel 37 . In particular, the peak at 43.7° demonstrates that the phase is indeed austenitic rather than martensitic, which would…”

Section: Qcmsupporting

confidence: 91%

Using Neutron Reflectometry to Discern the Structure of Fibrinogen Adsorption at the Stainless Steel/Aqueous Interface

et al. 2016

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Neutron reflectometry has been successfully used to study adsorption on a stainless steel surface by means of depositing a thin steel film on silicon. The film was characterized using XPS (X-ray photoelectron spectroscopy), TOF-SIMS (time-of-flight secondary ion mass spectrometry) and GIXRD (grazing incidence X-ray diffraction), demonstrating the retention both of austenitic phase and of the required composition for 316L stainless steel. The adsorption of fibrinogen from a physiologically-relevant solution onto the steel surface was studied using neutron reflectometry and QCM (quartz crystal microbalance) and compared to that on a deposited chromium oxide surface. It was found that the protein forms an irreversibly-bound layer at low concentrations, with maximum protein concentration a distance of around 20 Å from the surface. Evidence for a further diffuse reversibly-bound layer forming at higher concentrations was also observed. Both the structure of the layer revealed by the neutron reflectometry data and the high water retention predicted by the QCM data suggest that there is a significant extent of protein unfolding upon adsorption. A lower extent of adsorption was seen on the chromium surfaces, although the adsorbed layer structures were similar, suggesting comparable adsorption mechanisms.

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Section: Qcmsupporting

confidence: 91%

Using Neutron Reflectometry to Discern the Structure of Fibrinogen Adsorption at the Stainless Steel/Aqueous Interface

et al. 2016

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“…The whole procedure of preparation was detailed elsewhere 14 . 316L stainless steel powder (size ranging from 5 to 30 µm) and HA powder were mixed in the following proportions, 95/5, 80/20 and 50/50 weight percent.…”

Section: Methodsmentioning

confidence: 99%

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

2013

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316L stainless steel and Hydroxyapatite (5, 20 and 50 wt. (%) HA)-316L stainless steel composites were fabricated by mechanical alloying technique, pressing and sintering from 316L and HA powders. The corrosion behavior of both sintered 316L and HA-316L composites was evaluated by electrochemical techniques in simulated body fluid (Ringer's solution) and in 0.1M HCl solution which simulates occluded cell corrosion conditions. The results indicate that 316L stainless steel and HA-316L composites are passive in Ringer's solution and active in HCl solution. All materials are highly corrosion resistant in Ringer's solution with corrosion current density in the order of 10 -6 A cm -2 or less. Both 316L stainless steel and 5% HA-316L composite present good corrosion resistance in HCl with corrosion current density in the order of 10 -5 A cm -2 . The corrosion resistance decreases with increasing HA content in both solutions.

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“…Gambar 5 memperlihatkan pola difraksi sinar-X sampel baja tahan karat SS 316 dalam media air demin dan nano fluida selama perendaman 60 menit yang dibandingkan dengan pola difraksi dari basis data kristalografi dengan nomor kartu 03-065-4150 untuk fasa besi (Fe). Pada Gambar 5 tersebut ditunjukkan bahwa puncak pada pola difraksi didominasi oleh fasa-γ yaitu fasa austenit [19,20]. Pola difraksi tersebut belum menunjukkan indikasi terbentuknya produk korosi ataupun lapisan pasif yang terbentuk di permukaan paduan.…”

Section: Metodologiunclassified

Perilaku Elektrokimia Baja Tahan Karat SS 316 Dalam Media Nano Fluida

Prajitno

Setiawan²

2019

urania

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ABSTRAK PERILAKU ELEKTROKIMIA BAJA TAHAN KARAT SS 316 DALAM MEDIA NANO FLUIDA.Korosi merupakan permasalahan umum yang sering terjadi pada logam dan paduannya. Metode pengujian secara elektrokimia merupakan salah satu metode yang tepat untuk mempelajari korosi logam dan paduannya dalam lingkungan tertentu. Pada penelitian ini dilakukan evaluasi baja tahan karat SS 316 dalam media air demin dan nano fluida yang mengandung partikel nano ZrO 2 dengan metode elektrokimia. Potensial korosi, polarisasi Tafel, dan Electrochemical Impedance Spectroscopy (EIS) digunakan untuk mempelajari perilaku elektrokimia baja tahan karat SS 316 dalam media air demin dan nano fluida dengan variasi waktu perendaman selama 10, 60 dan 120 menit. Hasil pengukuran terhadap potensial korosi baja tahan karat SS 316 dalam media air demin dan nanofluid menunjukkan peningkatan seiring dengan bertambahnya waktu perendaman. Hasil pengukuran konstanta Tafel anodik pada baja tahan karat SS 316 dalam media air demin dan nano fluida menunjukkan bahwa nilai konstanta Tafel naik dengan dengan bertambahnya waktu perendaman. Hasil analisis polarisasi Tafel ditunjukkan bahwa laju korosi baja tahan karat SS 316 dalam media air demin dan nanofluid tidak terlihat perbedaan yang berarti dan laju korosi cenderung turun seiring dengan bertambahnya waktu perendaman. Hasil analsis dengan EIS pada baja tahan karat SS 316 menunjukkan bahwa nilai impedance yang tinggi dalam media nano fluida sehingga memiliki laju korosi yang rendah bila dibandingkan dalam media air demin. Analisis dengan difraksi sinar X (X-RD) menunjukkan bahwa fasa utama pada baja tahan karat SS 316 hasil pengujian korosi dalam media air demin dan nano fluida adalah γ-austenit. Baja tahan karat SS 316 mempunyai ketahanan korosi yang tinggi dalam media air demin dan nano fluida dengan laju korosi di bawah 1 MPY. ABSTRACT ELECTROCHEMICAL BEHAVIOR OF STAINLESS STEEL SS 316 IN NANOFLUID MEDIUM.Corrosion is a common problem in many engineering metals and alloys. Electrochemical method is powerfull instrument to use as tool to study corrosion behavior of metals and alloys in corrosive environment. The present study is to evaluate interaction between stainless steel SS 316 and nanofluid containing nano particles of ZrO2 as an additive to demineralized water by electrochemical method. Corrosion potential, Tafel polarization, and electrochemical impedance spectroscopy (EIS) of stainlees steel SS 316 were performed in both demineralized water and demineralized water containing nano particle 0,05% ZrO2 at different immersion time. Corrosion potential examination shows that stainless steel 316 is actively corroded in both demin water and nanofluid. The corrosion potential tends to increase toward positive value for longer immersion time, both in demin water and nanofluid media. The value of anodic Tafel slope of also tends to increase for longer immersion time, both in demin water and nanofluid. Tafel polarization examination shows that corrosion rate of stainless steel 316 in demin water and nanofluid is not...

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Preparation and characterization of stainless steel 316L/HA biocomposite

Cited by 21 publications

References 18 publications

Using Neutron Reflectometry to Discern the Structure of Fibrinogen Adsorption at the Stainless Steel/Aqueous Interface

Using Neutron Reflectometry to Discern the Structure of Fibrinogen Adsorption at the Stainless Steel/Aqueous Interface

Corrosion behavior of HA-316L SS biocomposites in aqueous solutions

Perilaku Elektrokimia Baja Tahan Karat SS 316 Dalam Media Nano Fluida

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