Sachin A. Mali
Syracuse University
Modular designTest methodComposite materialNanotechnologyMartensiteMetallurgyMaterials scienceCorrosionAustenitic stainless steelOxideAlloyCrevice corrosionChemical engineeringTitaniumElectrochemistryNucleationAnnealing (metallurgy)FrettingMicrostructureTitanium alloyAustenite
25Publications
12H-index
469Citations
Publications 24
Newest
#1Sachin A. Mali (SU: Syracuse University)H-Index: 12
#2Dongkai Zhu (SU: Syracuse University)H-Index: 2
Last. Jeremy L. Gilbert (SU: Syracuse University)H-Index: 50
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Abstract null null Fretting crevice corrosion has become a major concern in orthopedic medical devices when passivating alloys are used alone or in combination. In this work the fretting crevice corrosion response of 316 L stainless steel was investigated when the counterface consisted of different alloys and the effects of potential and normal load were investigated. Fretting initiated crevice corrosion was observed in all stainless steel containing couples, but not in the Ti6Al4V_CoCrMo combin...
1 CitationsSource
#1Eric S. Ouellette (Exponent)H-Index: 1
#2Sachin A. Mali (SU: Syracuse University)H-Index: 12
Last. Jeremy L. GilbertH-Index: 50
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BACKGROUND:The short-term corrosion and micromechanical behavior of 32 unique head-neck taper design/material/assembly conditions was tested using an incremental cyclic fretting corrosion (ICFC) test method previously developed. METHODS:Seven materials, design, and simulated surgical parameters were evaluated, each being assigned 2 conditions for testing, using a 27-2 (7 factor, quarter factorial) design of experiments test matrix. The factors explored were (1) seating load, (2) head-neck offset...
8 CitationsSource
#1Vaneet Singh (Medtronic plc)H-Index: 6
#2Jacob P. Shorez (Medtronic plc)H-Index: 1
Last. Jeremy L. Gilbert (Clemson University)H-Index: 50
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: Posterior spinal fusion implants include number of interconnecting components, which are subjected to micromotion under physiological loading conditions inducing a potential for fretting corrosion. There is very little known about the fretting corrosion in these devices in terms of the minimum angular displacement (threshold) necessary to induce fretting corrosion or the amount of fretting corrosion that can arise during the life of the implant. Therefore, the first goal was to evaluate the th...
5 CitationsSource
#1Jeremy L. GilbertH-Index: 50
Last. Eric S. Ouellette (SU: Syracuse University)H-Index: 1
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IntroductionMechanically assisted crevice corrosion (MACC) of head-neck modular taper junctions is prevalent in virtually all head neck tapers in use today. To date, no clear in vitro tests of desi...
#1Sachin A. Mali (SU: Syracuse University)H-Index: 12
#2Vaneet SinghH-Index: 6
Last. Jeremy L. Gilbert (SU: Syracuse University)H-Index: 50
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Spinal implants are made from a variety of materials to meet the unique mechanical demands of each application. However, the medical device community has raised concern about mixing dissimilar metals in an implant because of fear of inducing corrosion. There is a lack of systematic studies on the effects of mixing metals on performance of spinal implants, especially in fretting corrosion conditions. Hence, the goal was to determine whether mixing stainless steel (SS316L), titanium alloy (Ti6Al4V...
4 CitationsSource
1 CitationsSource
#1Sachin A. Mali (SU: Syracuse University)H-Index: 12
Mechanically assisted crevice corrosion (MACC) of metallic biomaterials continues to be a concern for highly loaded medical devices for spinal, dental, cardiovascular and orthopaedic applications. Increasing usage of modularity (multiple-component system) and mixed-alloy metal–metal junctions in orthopaedic surgery gives the surgeon increased intraoperative flexibility for choosing optimal components; however, these design changes can accelerate corrosion reactions and significantly impact local...
7 CitationsSource
#1Sachin A. Mali (SU: Syracuse University)H-Index: 12
#2K. C. Nune (UTEP: University of Texas at El Paso)H-Index: 22
Last. R.D.K. Misra (UTEP: University of Texas at El Paso)H-Index: 32
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Metallic implant materials used in load-bearing applications are inert in nature in their native state. The surface properties of the material and its interaction with the surrounding physiological fluid determine the success of the biomedical implant. In this regard, bioactive nanostructured coatings are being recognised as potential approach to enhance the biological and corrosion properties of the conventional inert materials. In this review, recent advances in biomedical applications of nano...
28 CitationsSource
#1Carlos Augusto Henning Laurindo (PUCPR: Pontifícia Universidade Católica do Paraná)H-Index: 9
#2Letícia Christina Muniz Bemben (PUCPR: Pontifícia Universidade Católica do Paraná)H-Index: 1
Last. Paulo Soares (PUCPR: Pontifícia Universidade Católica do Paraná)H-Index: 24
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Titanium is widely used as implant material; however, regardless of the excellent properties such as low density, corrosion resistance and biocompatibility, it usually presents poor tribological behaviour. The plasma electrolytic oxidation (PEO) technique produces a high hardness ceramic layer on the titanium surface, by the interaction of anodic oxide growth and plasma channel shock caused by the dielectric breakdown at high voltages taking place in an aqueous electrolyte. The characteristics o...
5 CitationsSource
#1Jeremy L. Gilbert (SU: Syracuse University)H-Index: 50
#2Sachin A. Mali (SU: Syracuse University)H-Index: 12
Last. Yangping Liu (SU: Syracuse University)H-Index: 7
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Tribocorrosion of medical devices causes the electrode potential across the device-solution interface to become more negative. This study provides a theoretical impedance-based understanding of voltage versus time changes that arise. It combines tribocorrosion with the voltage-dependent impedance characteristics of the surface, the relative anodic and cathodic areas and the mechanics and electrochemistry of oxide abrasion. An area-dependent Randle's circuit is used with the tribocorrosion curren...
13 CitationsSource