AFM probe based nano mechanical scribing of soda-lime glass

Mostofa, Md. Golam; Park, C.I.; Park, Simon S.

doi:10.1016/j.jmapro.2013.05.003

Cited by 25 publications

(11 citation statements)

References 25 publications

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“…(18) is lower than that in Eq. (17). On the other hand, the multi-pass sliding increases the width of wear trace, resulting in an increased horizontal contact area, A int , as shown in the comparison of "Top view".…”

Section: Resultsmentioning

confidence: 97%

“…But in ultra-precision machining, both the substrate deformation and the material removal take place in the ductile region, thus the friction and damage in the elasticplastic region deserves more attention in glass optical fabrication. Several AFM-based nanoscratch tests have been conducted on silicate glass surface [16,17] in which the friction force and the material removal were measured without quantitative analysis. At nanoscale, the single-asperity friction force usually includes interfacial friction and plowing friction.…”

Section: Introductionmentioning

confidence: 99%

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Quantitative investigation on single-asperity friction and wear of phosphate laser glass against a spherical AFM diamond tip

Yu¹,

Hu²,

Jia³

et al. 2015

Tribology International

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Section: Resultsmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

Quantitative investigation on single-asperity friction and wear of phosphate laser glass against a spherical AFM diamond tip

Yu¹,

Hu²,

Jia³

et al. 2015

Tribology International

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“…Oxide glasses play a critical role for innovation in a range of industries due to their combination of properties such as transparency, high hardness, relatively lightweight, and chemical durability . However, these materials are brittle since they lack a stable shearing mechanism.…”

Section: Introductionmentioning

confidence: 99%

Competitive effects of free volume, rigidity, and self‐adaptivity on indentation response of silicoaluminoborate glasses

et al. 2019

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Lithium aluminoborate glasses have recently been found to feature high resistance to crack initiation during indentation, but suffer from relatively low hardness and chemical durability. To further understand the mechanical properties of this glass family and their correlation with the network structure, we here study the effect of adding SiO2 to a 25Li2O–20Al2O3–55B2O3 glass on the structure and mechanical properties. Addition of silica increases the average network rigidity, but meanwhile its open tetrahedral structure decreases the atomic packing density. Consequently, we only observe a minor increase in hardness and glass transition temperature, and a decrease in Poisson's ratio. The addition of SiO2, and thus removal of Al2O3 and/or B2O3, also makes the network less structurally adaptive to applied stress, since Al and B easily increase their coordination number under pressure, while this is not the case for Si under modest pressures. As such, although the silica‐containing networks have more free volume, they cannot densify more during indentation, which in turn leads to an overall decrease in crack resistance upon SiO2 addition. Our work shows that, although pure silica glass has very high glass transition temperature and relatively high hardness, its addition in oxide glasses does not necessarily lead to significant increase in these properties due to the complex structural interactions in mixed network former glasses and the competitive effects of free volume and network rigidity.

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“…Nanoscratching has been used to determine the mechanical properties of thin films as well as to make unique patterns on surfaces . Most studies using nanoscratching on glass surfaces utilized higher loads typical of the plastic fracture regime . More recently, nanoscratching on phosphate glass surfaces in the polishing regime (elastic–plastic load boundary) has been evaluated .…”

Section: Introductionmentioning

confidence: 99%

Nanoscratching of Optical Glass Surfaces Near the Elastic–Plastic Load Boundary to Mimic the Mechanics of Polishing Particles

et al. 2016

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The nanomechanical deformations on glass surfaces near the elastic-plastic load boundary have been measured on various glasses by nanoscratching using an atomic force microscope (AFM) to mimic the mechanical interactions of polishing particles during optical polishing. Nanoscratches were created in air and aqueous environments using a 150-nm radius diamond-coated tip on polished fused silica, borosilicate, and phosphate glass surfaces; the topology of the nanoscratches were then characterized by AFM. Using load ranges expected on slurry particles during glass polishing (0.05-200 lN), plastic-type scratches were observed with depths in the nm range. Nanoscratching in air generally showed deeper & narrower scratches with more pileup compared to nanoscratching in water, especially on fused silica glass. The critical load needed to observe plastic deformation was determined to range from 0.2-1.2 lN for the three glasses. For phosphate glass, the load dependence of the removal depth was consistent with that expected from Hertzian mechanics. However, for fused silica and borosilicate glass in this load range, the deformation depth showed a weak dependence with load. Using a sub-T g annealing technique, material relaxation was observed on the nanoscratches, suggesting that a significant fraction of the deformation was due to densification on fused silica and borosilicate glass. Repeated nanoscratching at the same location was utilized for determining the effective incremental plastic removal depth. The incremental removal depth decreased with increase in number of passes, stabilizing after~10 passes. In water, the removal depths were determined as 0.3-0.55 nm/pass for fused silica, 0.85 nm/pass for borosilicate glass, and 2.4 nm/pass for phosphate glass. The combined nanoscratching results were utilized to define the composite removal function (i.e., removal depth) for a single polishing particle as a function of load, spanning the chemical to the plastic removal regimes. This removal function serves as an important set of parameters in understanding material removal during polishing and the resulting workpiece surface roughness.

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AFM probe based nano mechanical scribing of soda-lime glass

Cited by 25 publications

References 25 publications

Quantitative investigation on single-asperity friction and wear of phosphate laser glass against a spherical AFM diamond tip

Quantitative investigation on single-asperity friction and wear of phosphate laser glass against a spherical AFM diamond tip

Competitive effects of free volume, rigidity, and self‐adaptivity on indentation response of silicoaluminoborate glasses

Nanoscratching of Optical Glass Surfaces Near the Elastic–Plastic Load Boundary to Mimic the Mechanics of Polishing Particles

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