TY - JOUR
T1 - Nanoindentation of glass wool fibers
AU - Lonnroth, Nadja
AU - Muhlstein, Christopher L.
AU - Pantano, Carlo
AU - Yue, Yuanzheng
N1 - Funding Information:
This work was supported by Rockwool International and the NSF International Materials Institute on New Functionality on Glasses (DMR-0409588/540792-8001). This publication was also supported by the Pennsylvania State University Materials Research Institute NanoFabrication Network and the National Science Foundation Cooperative Agreement No. 0335765, National Nanotechnology Infrastructure Network, with Cornell University.
PY - 2008/8/15
Y1 - 2008/8/15
N2 - The nanoindentation technique is used to analyze the depth dependence of the hardness and the reduced elastic modulus of bulk glasses and glass wool fibers (4-12 μm in diameter) of calcium aluminosilicate composition. In spite of the fiber geometry and the delicate sample mounting-technique, nanoindentation proves to be a relatively accurate method that provides reproducible data for both hardness (H) and reduced elastic modulus (Er) of thin glass fibers. It is found that H and Er are generally lower for the fiber than for the bulk sample. Within a given fiber, both H and Er are approximately constant with increasing indentation depth. However, both of these parameters decrease with diminishing fiber diameter. This trend is attributed to an increase of the free volume of the fibers with decreasing fiber diameter, i.e. to an increase of the fictive temperature.
AB - The nanoindentation technique is used to analyze the depth dependence of the hardness and the reduced elastic modulus of bulk glasses and glass wool fibers (4-12 μm in diameter) of calcium aluminosilicate composition. In spite of the fiber geometry and the delicate sample mounting-technique, nanoindentation proves to be a relatively accurate method that provides reproducible data for both hardness (H) and reduced elastic modulus (Er) of thin glass fibers. It is found that H and Er are generally lower for the fiber than for the bulk sample. Within a given fiber, both H and Er are approximately constant with increasing indentation depth. However, both of these parameters decrease with diminishing fiber diameter. This trend is attributed to an increase of the free volume of the fibers with decreasing fiber diameter, i.e. to an increase of the fictive temperature.
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U2 - 10.1016/j.jnoncrysol.2008.04.014
DO - 10.1016/j.jnoncrysol.2008.04.014
M3 - Article
AN - SCOPUS:46849110188
VL - 354
SP - 3887
EP - 3895
JO - Journal of Non-Crystalline Solids
JF - Journal of Non-Crystalline Solids
SN - 0022-3093
IS - 32
ER -