Vickers microhardness of K 2 Co(SO 4 ) 2  · 6H 2 O single crystals and fracture geometry around impressions of vickers, knoop, and spherical indenters

N. L. Sizova; N. E. Novikova; V. L. Manomenova; E. B. Rudneva; A. E. Voloshin

doi:10.1134/S106377451603024X

Vickers microhardness of K₂Co(SO₄)₂ · 6H₂O single crystals and fracture geometry around impressions of vickers, knoop, and spherical indenters

Authors: Sizova N.L.¹, Novikova N.E.¹, Manomenova V.L.¹, Rudneva E.B.¹, Voloshin A.E.¹
Affiliations:
1. Shubnikov Institute of Crystallography
Issue: Vol 61, No 3 (2016)
Pages: 443-448
Section: Physical Properties of Crystals
URL: https://journal-vniispk.ru/1063-7745/article/view/190019
DOI: https://doi.org/10.1134/S106377451603024X
ID: 190019

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Abstract

The microhardness on the (010) and (001) planes in K₂Co(SO₄)₂ · 6H₂O crystal has been measured by the Vickers indentation method. Its values are, respectively, 11500 and 1300 MPa. No microhardness anisotropy of the first kind is revealed on either plane. The fracture geometry under indentation by a spherical indenter and Vickers and Knoop indenters is studied. The crystal has lower brittleness than the isomorphic Cs₂Ni(SO₄)₂ · 6H₂O crystal.