Tribological and microstructural analysis of Al2O3/TiO2 nanocomposites to use in the femoral head of hip replacement

Lee, Soo Whon; Morillo, Carlos; Lira‐Olivares, Joaquín; Kim, Seung Ho; Sekino, Tohru; Niihara, Koichi; Hockey, B. J.

doi:10.1016/s0043-1648(03)00099-1

Cited by 68 publications

(39 citation statements)

References 11 publications

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“…Several authors [14,33,34] proposed that the wear of brittle ceramics is proportional to fracture toughness on the basis that wear occurs by brittle 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 cracking. Furthermore, an increase in TiO 2 addition forms a denser splat layer, which allows an increase in fracture toughness and a subsequent increase in wear resistance.…”

Section: Wear Characteristicmentioning

confidence: 99%

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Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

et al. 2015

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Abstract:In this study, friction and dry sliding wear behavior of alumina and alumina-titania nearnanometric coatings have been studied. Coatings were obtained by Suspension Plasma Spraying (SPS) technique. Dry sliding wear tests were performed in an a tribometer with a ball on disk configuration, using a Al2O3 ball as a counterpart with a normal load of 2N, a sliding distance of 1200m and a sliding speed of 0.1 m/s. The influence of TiO2 addition in fabricated coatings was related with friction coefficient behavior, wear rates and wear damage patterns. A remarkable increment in wear resistance was founded by the TiO2 addition effect, in 2.6 times for the biggest amount. The analysis of wear surface was correlated with microstructural parameters, mechanical properties and wear rates.

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Section: Wear Characteristicmentioning

confidence: 99%

“…Numerous investigations on friction and wear behavior of conventional APS coatings with addition of TiO 2 , ZrO 2, and Cr 2 O 3 have been conducted [13][14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

et al. 2015

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“…One phase that would be present is rutile, because at temperatures between 400-1200°C, anatase begins to transform into rutile (11) (12) ; nevertheless, the phase present is Ti 2 O 3 , possibly because TiO 2 was reduced during the sintering process. The values of the Vickers Hardness are around to 2000 HV, these values are higher than the correspondent to zirconia-alumina composites, but the values of fracture toughness are a little bit lower (4) . In Figure 5 it can be observed that in the first stage a phenomenon denominated start-up state (2) .…”

mentioning

confidence: 61%

“…An Al 2 O 3 /TiO 2 nanocomposite with high toughness, high hardness, and high wear resistance was reported recently for potential use as the bearings in THA and TKA (4) . The materials consisted of a fine-grained Al 2 O 3 matrix containing 0-25 mol% nanosize TiO 2 particles (50 nm).…”

Section: Introductionmentioning

confidence: 99%

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Tribological Characteristics of Al2O3 Nanocomposites for Joint Prostheses

Morillo

Sawae

Murakami

2008

JBSE

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In this study the tribological characteristics of a sliding pair of Al 2 O 3 nanocomposites against Al 2 O 3 were investigated. Al 2 O 3 nanocomposites are proposed as a candidate material for the fabrication of prostheses. Nanopowders of Al 2 O 3 (AKP 50, 300 nm), Y-TZP; tetragonal zirconia polycrystal stabilized with 8mol % of yttria (TZ-8YS, 100 nm) and TiO 2 (PS-25, 50 nm) were mixed and hot pressed. A ball-on-plate tribometer was used for the wear test. The nanocomposite plate specimen was rubbed against the Al 2 O 3 ball at a frequency of 1 Hz for 1 h, with a load of 49 N. Distilled water and fetal bovine serum solution (FBSS) were used as lubricants. Mechanical properties were estimated using the indentation method. It was found that the specific wear rate of Al 2 O 3 nanocomposites was about 2-6x10 -8 mm 3 /Nm and the coefficient of friction from 0.3 to 0.5 for FBSS. The nanocomposites containing 15mol% Y-TZP (ATZ150) had the lowest wear rate (1.77x10 -8 mm 3 /Nm) for FBSS. Worn surfaces were observed using SEM.Furthermore, AFM and XPS were used to study the effect of the serum lubricant on the articulating surface of the Al 2 O 3 nanocomposites, and AlPO 4 was found on the wear track of the samples tested in FBSS.

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Case Study: Nanocrystalline Yttria‐Stabilized Tetragonal Zirconia Polycrystalline Ceramics

Basu

Kalin

2011

Tribology of Ceramics and Composites

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Tribological and microstructural analysis of Al2O3/TiO2 nanocomposites to use in the femoral head of hip replacement

Cited by 68 publications

References 11 publications

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

Sliding Wear Behavior of Al2O3–TiO2 Coatings Fabricated by the Suspension Plasma Spraying Technique

Tribological Characteristics of Al2O3 Nanocomposites for Joint Prostheses

Case Study: Nanocrystalline Yttria‐Stabilized Tetragonal Zirconia Polycrystalline Ceramics

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