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    Volume 49, Issue 1 (January 2021)

    On the Use of Microscale Abrasion Test for Determining the Particle Abrasivity

    (Received 9 August 2018; accepted 19 February 2019)

    Published Online: 2021

    CODEN: JTEVAB

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    Abstract

    Particle abrasivity is an important concept for helping to select materials for pumps and for disc cutters in underground excavation, and specific ASTM standards are available for making these selections. However, for manufacturing processes in which abrasive action is their core, the particle size range is approximately a few micrometers. The evaluation of particle abrasivity using the microscale abrasion test matches this range of particles for this purpose, but relatively few investigations using this kind of method have been conducted. The aim of this investigation is to use the microscale abrasion test to evaluate the particle abrasivity, avoiding changes on the ball surface and on the particle size distribution. Samples of quenched AISI D2 tool steel were used for tests. The wear mode was dependent on the testing time. Alumina (Al2O3) particles presented a lower abrasiveness when compared to boron carbide (B4C) ones, confirmed by the higher wear coefficient found in the latter after reaching the steady-state regime. This behavior was evidenced by the number of active particles in the contact, which showed that there were a larger number of B4C particles than Al2O3 during the contact at all sliding distances. The particle abrasivity is discussed in terms of significant characteristics of slurries: particle shape, particle size distribution, hardness-to-elastic modulus ratio, zeta potential, and density. As the controlling of those characteristics seems to be very important, particle abrasivity is a concept that needs to be improved besides the test system used for that purpose.

    Author Information:

    Rovani, Ane C.
    Academic Department of Mechanics, Surface and Contact Lab (LASC), Universidade Tecnológica Federal do Paraná, Curitiba,

    Rosso, Tiago A.
    Academic Department of Mechanics, Surface and Contact Lab (LASC), Universidade Tecnológica Federal do Paraná, Curitiba,

    Pintaude, Giuseppe
    Academic Department of Mechanics, Surface and Contact Lab (LASC), Universidade Tecnológica Federal do Paraná, Curitiba,


    Stock #: JTE20180576

    ISSN:0090-3973

    DOI: 10.1520/JTE20180576

    Author
    Title On the Use of Microscale Abrasion Test for Determining the Particle Abrasivity
    Symposium ,
    Committee G02