Premium
Wear Behavior of Bulk Polycrystalline MgO–MgFe 2 O 4 “Age‐Hardened Alloys”
Author(s) -
Gurnani Luv,
Kathuria Ranjan,
Mukhopadhyay Amartya
Publication year - 2016
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.13963
Subject(s) - materials science , crystallite , abrasive , brittleness , metallurgy , ceramic , phase (matter) , brittle fracture , composite material , fracture (geology) , chemistry , organic chemistry
We report here improved abrasive wear resistances for our newly developed bulk polycrystalline “age‐hardened/toughened” MgO–MgFe 2 O 4 “ceramic alloys”. In comparison with phase pure MgO, reductions in wear rates by up to ~30% were recorded for the MgO–MgFe 2 O 4 alloys, with those developed upon aging at 1000°C for 0 h showing the best improvements. In contrast to the worn surfaces for MgO, the worn surfaces of the alloys showed the presence of only abrasive grooves with hardly any evidence for brittle fracture induced pull‐out. Estimates for area fractions of pull‐outs and depths of damaged zones present trends similar to the wear rates, with the pull‐out fractions and the depths of damaged zones being lesser for the MgO–MgFe 2 O 4 alloys by up to ~60% and ~70%, respectively, as compared to phase pure MgO.