Knoop microhardness anisotropy on the cleavage plane of single crystals with the calcite structure
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Authors
Wong, Thomas
Issue Date
1991
Type
Thesis
Language
en_US
Keywords
Knoop Microhardness Profiles , Natural Rhombohedral Carbonate Single Crystals , Calcite , Magnesite , Rhodochrosite , Siderite , Smithsonite , Dolomite , Indentation Test Loads , Deformation Features , Scanning Electron Microscopy , Twinning , Slip Systems , Effective-resolved-shear-stress Concept , Indentation Load/size Effect , Test Loads , Meyer's law , Critical Indentation Load , Characteristic Indentation Size , Mackay Theses and Dissertations Grant Collection
Alternative Title
Abstract
Knoop microhardness profiles were determined on the (1011) cleavage planes for a series of natural rhombohedral carbonate single crystals, including calcite, magnesite, rhodochrosite, siderite, smithsonite, and the structurally related dolomite. Indentation test loads of 25 g, 50 g, 100 g, and 200 g were utilized. The resulting deformation features were examined using scanning electron microscopy (SEM). Twinning was observed in the calcite sample only. The physical properties of the other carbonate samples were considered to account for their deformation.
Description
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Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)