Friction and wear mechanisms of K2O–B2O3–Al2O3–SiO2–MgO–F glass-ceramics

Molla, Atiar Rahaman; Kumar, B.V. Manoj; Basu, Bikramjit

doi:10.1016/j.jeurceramsoc.2009.03.001

Cited by 19 publications

(8 citation statements)

References 29 publications

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“…At the lower load, the COF is as high as 1.7 meanwhile at 3 N the COF reduces to 1.1–1.2. In both cases such COF is notably higher than the values reported in the literature for different types of dense glass-ceramic materials, which is around 0.8 for a wide range of loads and counterbodies [28,29,30]. …”

Section: Resultscontrasting

confidence: 53%

Microstructural and Wear Behavior Characterization of Porous Layers Produced by Pulsed Laser Irradiation in Glass-Ceramics Substrates

et al. 2013

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In this work, wear behavior and microstructural characterization of porous layers produced in glass-ceramic substrates by pulsed laser irradiation in the nanosecond range are studied under unidirectional sliding conditions against AISI316 and corundum counterbodies. Depending on the optical configuration of the laser beam and on the working parameters, the local temperature and pressure applied over the interaction zone can generate a porous glass-ceramic layer. Material transference from the ball to the porous glass-ceramic layer was observed in the wear tests carried out against the AISI316 ball counterface whereas, in the case of the corundum ball, the wear volume loss was concentrated in the porous layer. Wear rate and friction coefficient presented higher values than expected for dense glass-ceramics.

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Section: Resultscontrasting

confidence: 53%

Microstructural and Wear Behavior Characterization of Porous Layers Produced by Pulsed Laser Irradiation in Glass-Ceramics Substrates

et al. 2013

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“…zinc magnesium silicate, ZnMgSi2O6, enstatite (MgSiO3), and willemite (Zn2SiO4) in addition to fluorophlogopite mica KMg3(AlSi3O10)F2. For similar type of K2O-B2O3-Al2O3-SiO2-MgO-F based glass system, Molla et al [16] obtained polycrystalline glass-ceramic containing 70% crystalline morphology after heat-treatment at 1040°C for 12 h duration.…”

Section: Resultsmentioning

confidence: 99%

Zn2+ Substitution by Pb2+ in Alkaline-boro-aluminosilicate Glass-ceramics: Microstructural Aspects

Garai

2021

Advanced Materials Proceedings

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This study exemplifies the effects of 5 wt.% Pb 2+ addition replacing the same Zn 2+ content on crystallization and microstructure of 10B2O3-16Al2O3-39SiO2-12MgO-12MgF2-4K2O-1Li2O-1AlPO4 (wt.%) glass-ceramic composite. Increase of linear thermalexpansion (6.93 to 7.18×10-6 /K at 50-600°C) in substituting Zn 2+ by Pb 2+ is attributed to the field-strength of cations. Opaque crystalline glass-ceramics are derived from the transparent glasses (synthesized by single-step melt-quenching at 1500 O C) by controlled heat-treatment at 1050°C and the predominant crystalline-phase was identified as fluorophlogopite mica, KMg3AlSi3O10F2. FFESEM of the ZnO containing glass-ceramics revealed that 100-200 µm sized plate-like crystals are in 'well-packed interlocked arrangement'; which changed to 'nanocrystalline microstructure' combined of 'spherical droplet like' nanocrystals (crystal size = 10-50 nm) in attendance of PbO. Decrease in linear thermal-expansion (11.03 to 7.93 × 10-6 /K at 50-700°C) due to the substitution of ZnO is ascribed to the crystallization inhibiting tendency of PbO towards boroaluminosilicate system. Thermal-expansion of ZnO containing glass-ceramic is large (> 11 × 10-6 /K at 50-700 and 50-800°C) which can exhibit their enough thermal shock resistivity to be suitable for high-temperature sealing application.

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“…Meanwhile, the wear traces seemed to be much rougher, presenting fragile flaking exfoliation. The above phenomenon indicates that the micro-cracks of the enamel coating increased with an increase of the load, leading to a large piece of exfoliation [25,26]. As the load further increased to 200 N, the friction coefficient of the enamel coating was always in an unstable state (see the curves in Figure 9d).…”

Section: Resultsmentioning

confidence: 99%

Development of High-Performance Enamel Coating on Grey Iron by Low-Temperature Sintering

et al. 2018

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In this study, we report on a low-temperature sintered enamel coating with a high-strength bonding and wear-resistance that protected a grey cast iron substrate. The SiO2–Al2O3–B2O3 composited prescription for the enamel coating was modified by the partial substitutions of SiO2 for B2O3 and alkali metals for Li2O. The optimized enamel coating was prepared by sintering at a relatively low temperature (730 °C) for seven minutes. Due to the composition of both the amorphous and crystalline phases, the enamel coating presented sufficient hardness and excellent wear resistance. The wear volume loss and the specific wear rate of the enamel coating were obviously lower than that of the metal substrate. The enamel coating can effectively improve the service life of the grey cast iron substrate in a complex frictional environment.

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Friction and wear mechanisms of K2O–B2O3–Al2O3–SiO2–MgO–F glass-ceramics

Cited by 19 publications

References 29 publications

Microstructural and Wear Behavior Characterization of Porous Layers Produced by Pulsed Laser Irradiation in Glass-Ceramics Substrates

Microstructural and Wear Behavior Characterization of Porous Layers Produced by Pulsed Laser Irradiation in Glass-Ceramics Substrates

Zn2+ Substitution by Pb2+ in Alkaline-boro-aluminosilicate Glass-ceramics: Microstructural Aspects

Development of High-Performance Enamel Coating on Grey Iron by Low-Temperature Sintering

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