Affiliation:
1. Department of Mechanical Engineering, University College of Engineering, JNTUK, Kakinada
Abstract
Because of stiff competition, industries are in
continuous pressure of producing high quality products. To do so,
inevitably high quality cutting tools are required. Alumina (Al2O3
)
is a quality cutting tool that is used for high speed machining. It is
a widely used tool for machining cast iron, hard steels and super
alloys. Therefore, the present work has taken up to prepare an
alumina cutting tool material. One of the greatest drawbacks of
alumina cutting tool material is its low fracture toughness. In the
present work, Graphene nanoplatelets (GNPs) are considered the
reinforcement in the Al2O3ceramic matrix to not only improve the
fracture toughness but also the other properties. The composites
are fabricated by the powder metallurgy route where the powders
of raw materials are essentially subjected to compaction and
sintering. Once the Al2O3 composites are fabricated and their
properties are tested for their density, hardness and fracture
toughness. It is observed that the GNP reinforced composites have
much better properties than those of the composites without
GNPs.
Publisher
Blue Eyes Intelligence Engineering and Sciences Engineering and Sciences Publication - BEIESP
Subject
Management of Technology and Innovation,General Engineering
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