Mechanical characterization of LiPON films using nanoindentation

Herbert, Erik G.; Tenhaeff, Wyatt E.; Dudney, Nancy J.; Pharr, George M.

doi:10.1016/j.tsf.2011.07.068

Cited by 129 publications

(84 citation statements)

References 14 publications

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“…Experimental values of S 2 / P max measured in this work with three‐sided pyramidal indenters having centerline‐to‐face angles of 35.3°, 55°, 65.3°, and 75° were used for calibrating the finite element data with equivalent conical indenter centerline‐to‐face angles of 42.2°, 61.4°, 70.3°, and 78.2°, respectively. S 2 / P max is a parameter unique to the combination of indenter geometry and material that is a constant with applied load or indentation depth for bulk, homogeneous materials with no indentation size effect . Experimental values of S 2 / P max with an error of ±10 GPa for fused silica were found to be 571 GPa, 600 GPa, 607 GPa, and 938 GPa for the 35.3°, 55°, 65.3° and 75° pyramidal indenters, respectively.…”

Section: Methodsmentioning

confidence: 99%

“…S 2 /P max is a parameter unique to the combination of indenter geometry and material that is a constant with applied load or indentation depth for bulk, homogeneous materials with no indentation size effect. 27 Experimental values of S 2 /P max with an error of AE10 GPa for fused silica were found to be 571 GPa, 28 600 GPa, 607 GPa, and 938 GPa for the 35.3°, 55°, 65.3°and 75°pyramidal indenters, respectively.…”

Section: Constitutive Parameters and Finite Element Inputsmentioning

confidence: 94%

“…The inelastic material parameters for both constitutive models are given in Table . Of particular importance to the indentation cracking analysis is the hardness H or the mean contact pressure at maximum load, which was calculated from S 2 / P max using the approach of Joslin and Oliver or

\frac{S^{2}}{P_{\max}} = \frac{4 \cdot {E_{normalr}}^{2} \cdot {normalβ}^{2}}{π \cdot H}

…”

Section: Methodsmentioning

confidence: 99%

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Constitutive modeling of indentation cracking in fused silica

et al. 2017

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Fused silica shows three distinct regimes during nanoindentation, that is, plastic deformation, inelastic densification, and cracking. Cohesive zone FEM is used to study these regimes for different indenter geometries. In a three‐dimensional model, the median/radial cracking is considered by introducing cohesive element planes that are aligned along the indenter edges perpendicular to the indented surface. In addition to comparing indentation cracking data with experimental data, the role of densification on indentation crack growth is critically examined using a pressure independent von Mises and a pressure dependent Drucker‐Prager Cap constitutive model. The results show that the Drucker‐Prager Cap model delivers an accurate description of the elastic‐plastic deformation conditions for all examined indenter geometries. Material densification leads to shorter crack lengths and thus the approach by Lawn et al. (J Am Ceram Soc, 1980;63:574‐581) results in larger indentation‐based fracture toughness values. Once the crack was initiated its propagation is comparable for blunt indenter geometries (Berkovich), while densification leads to a slower crack propagation for sharper indenter geometries.

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Section: Methodsmentioning

confidence: 99%

Section: Constitutive Parameters and Finite Element Inputsmentioning

confidence: 94%

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Constitutive modeling of indentation cracking in fused silica

et al. 2017

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“…They are also mechanically strong: nanoindentation measurements of lithium phosphonate oxide (LiPON) demonstrate elastic modulus of 77 GPa, (Herbert et al 2011), which is well beyond the minimum value of 3.4 GPa predicted by Newman (Monroe and Newman 2009) that is required of an electrolyte to suppress metallic lithium dendrite formation. Despite their mechanical strength, many ceramic electrolytes demonstrate excellent room-temperature ionic conductivity ([10 -3 S/cm) with lithium transference *1.…”

Section: Ceramic Electrolytesmentioning

confidence: 83%

Electrolytes for high-energy lithium batteries

et al. 2011

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From aqueous liquid electrolytes for lithiumair cells to ionic liquid electrolytes that permit continuous, high-rate cycling of secondary batteries comprising metallic lithium anodes, we show that many of the key impediments to progress in developing next-generation batteries with high specific energies can be overcome with cleaver designs of the electrolyte. When these designs are coupled with as cleverly engineered electrode configurations that control chemical interactions between the electrolyte and electrode or by simple additives-based schemes for manipulating physical contact between the electrolyte and electrode, we further show that rechargeable battery configurations can be facilely designed to achieve desirable safety, energy density and cycling performance.

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“…The use of solid‐state ion conductors as separators in ion battery chemistries is advantageous under consideration of safety and packaging requirements . For example, in lithium ion batteries solid inorganic ion conductors can be inherently more robust against dendrite formation, which can pierce polymer membranes leading to short circuits and potential for combustion of liquid electrolytes. Existing solid‐state thin film battery technologies rely primarily on configurations with lithium phosphorus oxynitride (LiPON) ion conductors.…”

Section: Introductionmentioning

confidence: 99%

Scaling Effects in Sodium Zirconium Silicate Phosphate (Na₁₊_xZr₂Si_xP₃₋_xO₁₂) Ion‐Conducting Thin Films

et al. 2016

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Preparation of sodium zirconium silicate phosphate (NaSICon), Na 1+x Zr 2 Si x P 3 -x O 12 (0.25 ≤ x ≤ 1.0), thin films has been investigated via a chemical solution approach on platinized silicon substrates. Increasing the silicon content resulted in a reduction in the crystallite size and a reduction in the measured ionic conductivity. Processing temperature was also found to affect microstructure and ionic conductivity with higher processing temperatures resulting in larger crystallite sizes and higher ionic conductivities. The highest room temperature sodium ion conductivity was measured for an x = 0.25 composition at 2.3 3 10 -5 S/cm. The decreasing ionic conductivity trends with increasing silicon content and decreasing processing temperature are consistent with grain boundary and defect scattering of conducting ions.

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Mechanical characterization of LiPON films using nanoindentation

Cited by 129 publications

References 14 publications

Constitutive modeling of indentation cracking in fused silica

Constitutive modeling of indentation cracking in fused silica

Electrolytes for high-energy lithium batteries

Scaling Effects in Sodium Zirconium Silicate Phosphate (Na₁₊_xZr₂Si_xP₃₋_xO₁₂) Ion‐Conducting Thin Films

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Mechanical characterization of LiPON films using nanoindentation

Cited by 129 publications

References 14 publications

Constitutive modeling of indentation cracking in fused silica

Constitutive modeling of indentation cracking in fused silica

Electrolytes for high-energy lithium batteries

Scaling Effects in Sodium Zirconium Silicate Phosphate (Na1+xZr2SixP3−xO12) Ion‐Conducting Thin Films

Contact Info

Product

Resources

About

Scaling Effects in Sodium Zirconium Silicate Phosphate (Na₁₊_xZr₂Si_xP₃₋_xO₁₂) Ion‐Conducting Thin Films