Tribological and corrosion testing of surface engineered surgical grade CoCrMo alloy

Ortega, Javier A.; Hernández-Rodríguez, M.A.L.; Ventura-Sobrevilla, V.; Michalczewski, R.; Smolik, J.; Szczerek, M.

doi:10.1016/j.wear.2010.12.062

Cited by 38 publications

(14 citation statements)

References 16 publications

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“…Technological properties and tribological conditions heavily influence the wear mechanism of the articulation components of a friction couple (Pawlus, ; Ortega‐Saenz et al ., ). Generated wear debris, which subsequently accumulates in the joint space, contribute to the limited wear resistance of a friction pair and complications developed after hip joint replacement, like third‐body damage to the articulation, inflammation of the hip joint, or audible squeaking of this joint (Hall et al ., ; Wall, ).…”

Section: Introductionmentioning

confidence: 97%

The measurement and analysis of surface geometric structure of ceramic femoral heads

2013

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The surface functionality of interacting components is determined by evaluating geometric surface structure. Hence, the ceramic femoral heads originated from precision machining were subject to measurement and analysis with regard to roughness, surface damages and deviation from roundness. A variety of measurement techniques were applied in order to thoroughly examine the product quality. The obtained results proved in accordance with the specification: Ra was not greater than 0.05 µm, whereas Δ was less than 10 µm (5 µm) when ceramic balls were used in conjunction with a polyethylene (ceramic) socket. Additionally, the surface damages which can affect the life of a friction pair were analyzed.

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Section: Introductionmentioning

confidence: 97%

The measurement and analysis of surface geometric structure of ceramic femoral heads

2013

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“…Moreover, the microstructure of hot forged Co-Cr-Mo was found to be finer and exhibited superior mechanical properties compared to annealed alloys (Okazaki, 2008). Some reports are available on tribo-corrosion behavior of Co-Cr-Mo alloys (Ortega-Saenz et al, 2011;Pourzal et al, 2011;Mischler and Munoz, 2013). From these earlier studies, it is clear that no reported literature is available on the influence of heat treatment on microstructure, tribological, and corrosion properties of laser processed Co-Cr-Mo alloy.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Co-Cr-Mo Alloy: Influence of Heat Treatment on Microstructure, Tribological, and Electrochemical Properties

Mantrala¹,

Das

Balla

et al. 2015

Front. Mech. Eng.

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Co-Cr-Mo alloy samples, fabricated using Laser Engineered Net Shaping-a laser-based additive manufacturing technology, have been subjected to heat treatment to study its influence on microstructure, wear, and corrosion properties. Following L9 Orthogonal array of Taguchi method, the samples were solutionized at 1200°C for 30, 45, and 60 min followed by water quenching. Aging treatment was done at 815 and 830°C for 2, 4, and 6 h. Heat treated samples were evaluated for their microstructure, hardness, wear resistance, and corrosion resistance. The results revealed that highest hardness of 512 ± 58 Hv and wear rate of 0.90 ± 0.14 × 10 −4 mm 3 /N•m can be achieved with appropriate post-fabrication heat treatment. Analysis of variance and gray relational analysis on the experimental data revealed that the samples subjected to solution treatment for 60 min, without aging, exhibit best combination of hardness, wear, and corrosion resistance.

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“…The seating mechanics test measured seating displacement, seating stiffness, and seating energy calculated using the load–displacement plots. There was no significant difference in the seating displacement measured across the three material combinations studied here, which can be explained by the similarity in modulus of 316L stainless steel to CoCrMo alloy, which were the liner materials, as well as the coefficient of friction between Ti–6Al–4V and these alloys . The displacement measured at each DVRT in a single test was found to be non‐uniform, which was the case with most of the constructs, with both Stage I and II seating tests.…”

Section: Discussionmentioning

confidence: 67%

“…After ICFC testing, the pushout load was found to be between 30 and 43% of the maximum load applied, that is, 4,000 N, significantly higher than the immediately post‐seated pushout results. The three material combinations did not experience significantly different pushout loads ( p > 0.05) implying that the material combination did not influence engagement strength at the acetabular taper, which can again be attributed to the similar moduli and friction of the liner materials.…”

Section: Discussionmentioning

confidence: 90%

In vitro test methods for seating and fretting corrosion behavior of modular metal‐on‐metal acetabular tapers

Shenoy

Gilbert

2019

Journal Orthopaedic Research

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Retrieval studies show that metal-on-metal acetabular shell-liner tapers are susceptible to corrosion, which is hypothesized to arise from mechanically-assisted crevice corrosion (MACC). The role of materials on MACC of acetabular tapers has not been previously studied. In vitro tests of seating, pushout, and fretting corrosion performance of acetabular tapers are presented to assess the role of material combinations (Ti-6Al-4V shells, HC CoCrMo, LC CoCrMo, and 316L SS liners). The acetabular tapers were wetassembled to a seating load of 1,000 N. The liner load-displacement seating mechanics were measured. Fretting corrosion currents were evaluated using a uniaxial incremental cyclic compression test up to 4,000 N, with the load applied at a 55°angle to the taper interface. Fretting currents, fretting onset loads, taper disengagement strength were measured and load-displacement plots were obtained. Pushout tests were also performed pre-and post-fretting corrosion. The average liner seating displacements varied from 134 to 226 μm across groups. Fretting currents at 3,600 N cyclic load were low and ranged between 0.05 and 0.27 μA and were independent of material combination (p > 0.05), reflecting small amounts of fretting. Fretting corrosion onset loads were between 1,800 and 2,100 N, and did not differ across groups (p > 0.05). Pushout loads were 27-43% of the maximum load applied. Fretting corrosion levels were very low for all material combinations and not different from one another. The seating and pushout responses were also not material dependent. The low fretting currents measured imply that MACC may not be a major cause for acetabular taper corrosion.

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Tribological and corrosion testing of surface engineered surgical grade CoCrMo alloy

Cited by 38 publications

References 16 publications

The measurement and analysis of surface geometric structure of ceramic femoral heads

The measurement and analysis of surface geometric structure of ceramic femoral heads

Additive Manufacturing of Co-Cr-Mo Alloy: Influence of Heat Treatment on Microstructure, Tribological, and Electrochemical Properties

In vitro test methods for seating and fretting corrosion behavior of modular metal‐on‐metal acetabular tapers

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