Tribophysical Properties of Polycrystalline Bulk Ti^sub 3^AlC^sub 2

Tribophysical Properties of Polycrystalline Bulk Ti^sub 3^AlC^sub 2

A nearly pure, dense, polycrystalline bulk Ti^sub 3^AlC^sub 2^ sample was prepared by reactively hot pressing the element titanium, aluminum, and graphite powders. The tribophysical properties were investigated by sliding a Ti^sub 3^AlC^sub 2^ block dryly against a low-carbon steel disk. It was foun...

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Veröffentlicht in:Journal of the American Ceramic Society 2005-11, Vol.88 (11), p.3270
Hauptverfasser: Zhai Hongxiang, Huang Zhenying, Ai Mingxing, Zhou, Yang
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Sprache:eng
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Nanostructured ceramics
Physical properties
Polycrystals
Tribology
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creator Zhai Hongxiang
Huang Zhenying
Ai Mingxing
Zhou, Yang
description A nearly pure, dense, polycrystalline bulk Ti^sub 3^AlC^sub 2^ sample was prepared by reactively hot pressing the element titanium, aluminum, and graphite powders. The tribophysical properties were investigated by sliding a Ti^sub 3^AlC^sub 2^ block dryly against a low-carbon steel disk. It was found that the friction coefficient is as low as ~0.1, and the wear rate of Ti^sub 3^AlC^sub 2^ is only ~2.5 × 10^sup -6^ mm^sup 3^/N * m for the highest sliding speed of 60 m/s and the largest normal pressure of 0.8 MPa. These unusual properties are attributable to the presence of a compact self-generating film, which covers uniformly over the friction surface of Ti^sub 3^AlC^sub 2^ with a thickness of ~0.5 µm. [PUBLICATION ABSTRACT]
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The tribophysical properties were investigated by sliding a Ti^sub 3^AlC^sub 2^ block dryly against a low-carbon steel disk. It was found that the friction coefficient is as low as ~0.1, and the wear rate of Ti^sub 3^AlC^sub 2^ is only ~2.5 × 10^sup -6^ mm^sup 3^/N * m for the highest sliding speed of 60 m/s and the largest normal pressure of 0.8 MPa. These unusual properties are attributable to the presence of a compact self-generating film, which covers uniformly over the friction surface of Ti^sub 3^AlC^sub 2^ with a thickness of ~0.5 µm. 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subjects Nanostructured ceramics
Physical properties
Polycrystals
Tribology
title Tribophysical Properties of Polycrystalline Bulk Ti^sub 3^AlC^sub 2
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