Chemistry and Physics of Mechanical Hardness

Gilman, John J.

doi:10.1002/9780470446836

Cited by 97 publications

(88 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A value of m = 0.25 was used to calculate G. The H/G value for LLTO-SG and LLTO-SS was *0.13 and *0.12, respectively, which suggests that dominant bonding type is covalent. This is in good agreement with results for other oxide perovskites [47], where the H/G value for LLZO is *0.11, and for other oxide garnets [47], where the H/G value for LATP is *0. 16.…”

Section: Hardness and Bondingsupporting

confidence: 90%

Mechanical properties of the solid Li-ion conducting electrolyte: Li0.33La0.57TiO3

et al. 2012

View full text Add to dashboard Cite

Li 0.33 La 0.57 TiO 3 (LLTO) is a potential Li-ion conducting membrane for use in aqueous Li-air batteries. To be in this configuration its mechanical properties must be determined. Dense LLTO was prepared using a solidstate (SS) or sol-gel (SG) procedure and was hot-pressed to yield a high relative density material ([95 %). Young's modulus, hardness, and fracture toughness of the LLTO-SS and sol-gel LLTO-SG materials was determined and compared to other solid Li-ion conducting electrolytes. The Young's modulus for LLTO-SG and LLTO-SS was 186 ± 4 and 200 ± 3 GPa, respectively. The Vickers hardness of LLTO-SG and LLTO-SS was 9.7 ± 0.7 and 9.2 ± 0.2 GPa, respectively. The fracture toughness, K IC , of both LLTO-SG and LLTO-SS was *1 MPa m 1/2 ; the fracture toughness of LLTO-SG was slightly higher than that of LLTO-SS. Both LLTO-SG and LLTO-SS have a Young's modulus and hardness greater than the other possible solid Li-ion conducting membranes

show abstract

Section: Hardness and Bondingsupporting

confidence: 90%

Mechanical properties of the solid Li-ion conducting electrolyte: Li0.33La0.57TiO3

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The knowledge of the mechanical properties of crystals is important for the elucidation of intra-crystalline bonds and practical issues such as the limits of mechanical stability [1,2]. The mechanical properties of protein crystals is greatly affected by water content, although dislocations still play a crucial role in plastic deformation.…”

Section: Introductionmentioning

confidence: 99%

Microindentation Hardness of Protein Crystals under Controlled Relative Humidity

et al. 2017

View full text Add to dashboard Cite

Vickers microindentation hardness of protein crystals was investigated on the (110) habit plane of tetragonal hen egg-white lysozyme crystals containing intracrystalline water at controlled relative humidity. The time evolution of the hardness of the crystals exposed to air with different humidities exhibits three stages such as the incubation, transition, and saturation stages. The hardness in the incubation stage keeps a constant value of 16 MPa, which is independent of the humidity. The incubation hardness can correspond to the intrinsic one in the wet condition. The increase of the hardness in the transition and saturation stages is well fitted with the single exponential curve, and is correlated with the reduction of water content in the crystal by the evaporation. The saturated maximum hardness also strongly depends on the water content equilibrated with the humidity. The slip traces corresponding to the 110 [110] slip system around the indentation marks are observed in not only incubation but also saturation stages. It is suggested that the plastic deformation in protein crystals by the indentation can be attributed to dislocation multiplication and motion inducing the slip. The indentation hardness in protein crystals is discussed in light of dislocation mechanism with Peierls stress and intracrystalline water.

show abstract

“…), см. [60][61][62]. Указанные упругие параметры тесно связаны с дру-гими фундаментальными физическими свойствами мате-риалов, таких как температура Дебая (θ D ) и скорость звука (ν m ).…”

Section: дв суетин ир шеинunclassified

Электронная структура, механическая и динамическая стабильность гексагональных субкарбидов M-=SUB=-2-=/SUB=-C (M = Tc, Ru, Rh, Pd, Re, Os, Ir, Pt): ab initio расчеты

Suetin¹,

Shein²

2018

Физика Твердого Тела

View full text Add to dashboard Cite

Физика твердого тела, 2018, том 60, вып Посредством ab initio расчетов были изучены свойства серии гексагональных (Fe 2 N-подобных) суб-карбидов M 2 C, где M = Tc, Ru, Rh, Pd, Re, Os, Ir, Pt, и рассчитаны их равновесные структурные параметры, электронные свойства, фазовая стабильность, константы упругости, модули сжатия, сдвига и Юнга, сжимаемость, индикатор Пуга, коэффициент Пуассона, индексы упругой анизотропии, а также твердость, температура Дебая, скорости звука, низкотемпературная теплоемкость. На основании полученных данных установлено, что все эти субкарбиды механически устойчивы, однако их энергии формирования E form относительно смеси d-металла и графита положительны. Кроме того, расчет фононных спектров этих субкарбидов показал наличие отрицательных мод, что указывает на их динамическую нестабильность. Таким образом, успешный синтез данных карбидов при нормальных условиях маловероятен.

show abstract

Chemistry and Physics of Mechanical Hardness

Cited by 97 publications

References 5 publications

Mechanical properties of the solid Li-ion conducting electrolyte: Li0.33La0.57TiO3

Mechanical properties of the solid Li-ion conducting electrolyte: Li0.33La0.57TiO3

Microindentation Hardness of Protein Crystals under Controlled Relative Humidity

Электронная структура, механическая и динамическая стабильность гексагональных субкарбидов M-=SUB=-2-=/SUB=-C (M = Tc, Ru, Rh, Pd, Re, Os, Ir, Pt): ab initio расчеты

Contact Info

Product

Resources

About