Brittle Behavior in Aspirin Crystals: Evidence of Spalling Fracture
Brittle Behavior in Aspirin Crystals: Evidence of Spalling Fracture
复制标题
阿司匹林晶体的脆性行为:剥落断裂的证据
DOI:
10.1021/acs.cgd.0c01662
复制
发表时间:
2021
影响因子:
3.8
通讯作者:
Gabriele B
中科院分区:
文献类型:
--
作者:
Gabriele B
Single crystals of aspirin form I were cleaved and indented on their dominant face. Upon inspection, it was possible to observe strongly anisotropic shallow lateral cracks due to the extreme low surface roughness after cleavage. Atomic force microscopy (AFM) imaging showed spalling fractures nucleating from the indent corners, forming terraces with a height of one or two interplanar spacingsd100. The formation of such spalling fractures in aspirin was rationalized using basic calculations of attachment energies, showing how (100) layers are poorly bonded when compared to their relatively higher intralayer bonding. An attempt at explaining the preferential propagation of these fractures along the [010] direction is discussed.
DOI:
--
发表时间:
1991
期刊:
影响因子:
--
作者:
G. Pharr
通讯作者:
G. Pharr
影响因子:
5.8
作者:
D. Olusanmi;K. Roberts;M. Ghadiri;Y. Ding
通讯作者:
Y. Ding
DOI:
--
发表时间:
2017
期刊:
影响因子:
--
作者:
C. Malla Reddy
通讯作者:
C. Malla Reddy