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Research Papers: Friction and Wear

Design and Synthesis of a Geopolymer-Enhanced Quasi-Crystalline Composite for Resisting Wear and Corrosion

[+] Author and Article Information
M. Fevzi Ozaydin

Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77843

Hong Liang

Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77843
e-mail: hliang@tamu.edu

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received April 1, 2015; final manuscript received July 22, 2015; published online October 15, 2015. Assoc. Editor: Dae-Eun Kim.

J. Tribol 138(2), 021601 (Oct 15, 2015) (6 pages) Paper No: TRIB-15-1101; doi: 10.1115/1.4031400 History: Received April 01, 2015; Revised July 22, 2015

Multiphase composites are attractive for improved mechanical performance and corrosion resistance. In this research, a new composite consisting quasi-crystalline Al75Mn14Si7Fe4 alloy of icosahedral, cubic α-AlMnSiFe, monoclinic Al13Fe4 phases, and ferro-silico-aluminate geopolymer was synthesized using rapid solidification and thermal treatment methods. The concentration of icosahedral phase (i-phase) was controlled and the formation of geopolymer was obtained through heat treatment. Characterization showed that the microhardness and wear resistance were increased with the amount of i-phase. The corrosion resistance, on the other hand, was improved with the existence of the geopolymer. This research demonstrates an effective approach in processing a multiphase composite that has desired properties and performance through multiphase design and composition.

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Figures

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Fig. 1

Quasi-crystalline alloy process steps

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Fig. 2

(a) XRD patterns of Al75Mn14Si7Fe4 alloy and (b) and (c) SEM images showing the microstructure of as-cast and annealed conditions, respectively

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Fig. 3

Comparison of the microhardness data

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Fig. 6

Polarization curves of as-cast and annealed Al75Mn14Si7Fe4 alloy in 0.1 M NaCl solution

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Fig. 5

(a) SEM image of as-cast Al75Mn14Si7Fe4, (b) 3D laser confocal microscopic surface height image of as-cast Al75Mn14Si7Fe4, (c) laser confocal microscopic two-dimensional image of as-cast Al75Mn14Si7Fe4 wear track, (d) 3D image of surface roughness profile of as-cast Al75Mn14Si7Fe4, (e) SEM image of annealed Al75Mn14Si7Fe4, (f) 3D laser confocal microscopic surface height image of annealed Al75Mn14Si7Fe4, (g) laser confocal microscopic two-dimensional image of annealed Al75Mn14Si7Fe4 wear track, (h) 3D image of surface roughness profile of annealed Al75Mn14Si7Fe4, (i) laser optical microscopic image of geopolymer, and (j) 3D image of surface roughness profile of geopolymer

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Fig. 4

Comparison of coefficient of friction plotted against time

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