The indentation load/size effect and the measurement of the hardness of vitreous silica

The indentation load/size effect (ISE) for the Knoop microhardness measurement of vitreous silica is considered for indentation in different test environments. Analysis was through the application of Meyer's Law, the Hays/Kendall approach of a critical load for the initiation of flow and the pr...

Full description

Saved in:
Bibliographic Details
Published in:Journal of non-crystalline solids 1992, Vol.146 (2-3), p.197-212
Main Authors: Li, Hong, Bradt, Richard C.
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Physics
Tribology and hardness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The indentation load/size effect (ISE) for the Knoop microhardness measurement of vitreous silica is considered for indentation in different test environments. Analysis was through the application of Meyer's Law, the Hays/Kendall approach of a critical load for the initiation of flow and the proportional specimen resistance (PSR) model proposed by Li and Bradt. The PSR model in combination with a normalized form of Meyer's Law was found to describe consistently the measurements and to yield a load-independent Knoop microhardness for fused silica of 540 kg/mm 2. The model also explains the effects of different indentation test environments, suggesting the effect is a result of their lubricating effects at the indenter facet/specimen interface.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(05)80492-2