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Research Papers: Friction & Wear

A Novel Composite With Nacreous Reinforcement for Corrosion and Wear Reduction

[+] Author and Article Information
Yountae Shin

Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77843
e-mail: shin6461@naver.com

Huaping Xiao

Department of Mechanical Engineering,
Texas A&M University,
College Station, TX 77843
e-mail: xiaohuaping107@163.com

Hong Liang

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

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received July 5, 2014; final manuscript received October 28, 2014; published online December 12, 2014. Assoc. Editor: Robert Wood.

J. Tribol 137(2), 021602 (Apr 01, 2015) (8 pages) Paper No: TRIB-14-1151; doi: 10.1115/1.4028980 History: Received July 05, 2014; Revised October 28, 2014; Online December 12, 2014

This paper explores new approaches in design and fabrication of novel composite materials in order to increase corrosion and wear resistance. By mimicking nature, nacreous particles from seashells were used as reinforcement in an aluminum matrix. A powder metallurgy process was developed to fabricate the nacreous-reinforced-aluminum matrix composites. Mechanical properties, corrosion, and wear resistance were characterized. Experimental results showed that the corrosion resistance increases as the nacreous concentration increases. The hardness and wear resistance increased by up to 22% and 10%, respectively. With oxidation of aluminum during heat treatment, the mentioned properties were further improved by about 32–37%.

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References

Figures

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Fig. 1

Surface porosity analysis

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Fig. 2

Polarization curves of the specimen

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Fig. 3

Observed intergranular and galvanic corrosion

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Fig. 4

Corrosion mechanisms in nacre-reinforced composites

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Fig. 5

Vickers hardness test results

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Fig. 7

Friction coefficient test (a) and wear test and (b) results

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Fig. 10

Nacreous particle blocks crack propagation

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Fig. 11

Crack resistance of nacreous in composite

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