In-situ TEM Observation of Deformations in a Single Crystal Sapphire During Nanoindentation

Elfallagh, F.; Lockwood, AJ; Inkson, Beverley J.

doi:10.1007/978-3-319-00506-5_16

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2019

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“…Several bend contours are visible in Figure 6 and Figure 7, that correspond to an increase of stress within the sample [23]. Detailed explanation of the formation of such contours is reported elsewhere [24].…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 63%

Nanoindentation deformation and cracking in sapphire

Trabadelo

Pathak

Saeidi

et al. 2019

Ceramics International

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Single crystal sapphire is an anisotropic material and its mechanical behaviour depends on the crystallographic orientation. In this work, a systematic study is performed to investigate the effect of crystallographic orientation on the deformation and cracking of sapphire by means of nanoindentation using spherical indenters. It aims also at determining the physical origin of the "pop-in" appearing in the nanoindentation curves.For that purpose, nanoindentations were performed where the load was increased until

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 63%