Friction-induced subsurface densification of glass at contact stress far below indentation damage threshold
Friction-induced subsurface densification of glass at contact stress far below indentation damage threshold
复制标题
接触应力远低于压痕损伤阈值时，摩擦引起的玻璃表面下致密化
DOI：
10.1016/j.actamat.2020.03.005
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发表时间：
2020-05
期刊：
影响因子：
9.4
通讯作者：
Seong H. Kim
中科院分区：
文献类型：
--
作者：
Hongtu He;Seung Ho Hahn;Jiaxin Yu;Qian Qiao;Adri C.T.van Duin;Seong H. Kim
It is well known that the densification of oxide glass can occur at high contact pressure (typically >5 GPa) under normal indentation conditions. This study reports that when frictional shear is involved, the subsurface densification of glass can occur under low load conditions that would involve completely elastic deformation if the load is applied along the surface normal direction without any interfacial shear. This phenomenon was observed for a borosilicate glass rubbed with a smooth stainless-steel ball in liquid water at a nominal Hertzian contact pressure of ≤0.5 GPa. Under these frictional conditions, subsurface cracking is completely suppressed, and surface wear occurs through mechanochemical reactions. Since the mechanochemical wear track was sufficiently smooth, it was possible to employ a sub-glass transition temperature (sub-Tg) annealing method to measure the volume recovery of the densified subsurface region. The friction-induced subsurface densification of the wear track was also confirmed through nanoindentation measurements and dissolution tests in pH 13 aqueous solutions. Molecular dynamics (MD) simulations with a ReaxFF reactive force also suggested that the subsurface structural change can occur readily when friction is involved at low contact pressure conditions.
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影响因子：
3.9
作者：
S. Freiman;S. Wiederhorn;J. J. Mecholsky-J.
通讯作者：
S. Freiman;S. Wiederhorn;J. J. Mecholsky-J.
影响因子：
3.2
作者：
T. Michalske;B. Bunker
通讯作者：
T. Michalske;B. Bunker
DOI：
10.1063/1.3593399
发表时间：
2011-05
期刊：
The Journal of chemical physics
影响因子：
--
作者：
Sindy Reibstein;Lothar Wondraczek;D. Ligny;S. Krolikowski;Sergey Sirotkin;J. Simon;V. Martinez;B. Champagnon
通讯作者：
Sindy Reibstein;Lothar Wondraczek;D. Ligny;S. Krolikowski;Sergey Sirotkin;J. Simon;V. Martinez;B. Champagnon
DOI：
10.1111/j.2041-1294.2010.00005.x
发表时间：
2010-03
影响因子：
2.1
作者：
C. Kurkjian;P. Gupta;R. Brow
通讯作者：
C. Kurkjian;P. Gupta;R. Brow
影响因子：
3.5
作者：
E. Moayedi;S. Sawamura;Jan Hennig;E. Gnecco;L. Wondraczek
通讯作者：
E. Moayedi;S. Sawamura;Jan Hennig;E. Gnecco;L. Wondraczek