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Tribological performance of TiAl matrix self-lubricating composites containing Ag, Ti3SiC2 and BaF2/CaF2 tested from room temperature to 600°C
Graphical abstract Variation of friction coefficients and wear rates of TiAl matrix self-lubricating composites with temperature: TiAl based alloy (TA), TiAl–3Ag–3Ti3SiC2–3BaF2/CaF2 eutectic (TB), TiAl–5Ag–5Ti3SiC2–5BaF2/CaF2 eutectic (TC) and TiAl–7Ag–7Ti3SiC2–7BaF2/CaF2 eutectic (TD). Display Omitted
Highlights Tribological properties of TMSC from RT to 600°C are tested. ATBC brings about an improvement in tribological behavior of TMSC. Synergetic effect of ATBC is key to tribological performance of TMSC. TB shows the best self-lubricating performance and tribological properties.
Abstract Dry sliding tribological behaviors of TiAl matrix self-lubricating composites (TMSC) containing varying amounts of Ag, Ti3SiC2 and BaF2/CaF2 eutectic (BaF2–38wt.%CaF2) (ATBC) with weight ratio of 1:1:1 against Si3N4 from room temperature (RT) to 600°C at the condition of 10N–0.234m/s were experimentally studied. The results implied that the ATBC could improve friction-reducing and anti-wear ability of TMSC over an extreme range of operating temperatures, which was attributed to the synergetic effect of Ag, Ti3SiC2 and BaF2/CaF2 lubricants. In addition, TMSC containing 9wt.% ATBC exhibited the best tribological properties over the wide temperature range from RT to 600°C.
Tribological performance of TiAl matrix self-lubricating composites containing Ag, Ti3SiC2 and BaF2/CaF2 tested from room temperature to 600°C
Graphical abstract Variation of friction coefficients and wear rates of TiAl matrix self-lubricating composites with temperature: TiAl based alloy (TA), TiAl–3Ag–3Ti3SiC2–3BaF2/CaF2 eutectic (TB), TiAl–5Ag–5Ti3SiC2–5BaF2/CaF2 eutectic (TC) and TiAl–7Ag–7Ti3SiC2–7BaF2/CaF2 eutectic (TD). Display Omitted
Highlights Tribological properties of TMSC from RT to 600°C are tested. ATBC brings about an improvement in tribological behavior of TMSC. Synergetic effect of ATBC is key to tribological performance of TMSC. TB shows the best self-lubricating performance and tribological properties.
Abstract Dry sliding tribological behaviors of TiAl matrix self-lubricating composites (TMSC) containing varying amounts of Ag, Ti3SiC2 and BaF2/CaF2 eutectic (BaF2–38wt.%CaF2) (ATBC) with weight ratio of 1:1:1 against Si3N4 from room temperature (RT) to 600°C at the condition of 10N–0.234m/s were experimentally studied. The results implied that the ATBC could improve friction-reducing and anti-wear ability of TMSC over an extreme range of operating temperatures, which was attributed to the synergetic effect of Ag, Ti3SiC2 and BaF2/CaF2 lubricants. In addition, TMSC containing 9wt.% ATBC exhibited the best tribological properties over the wide temperature range from RT to 600°C.
Tribological performance of TiAl matrix self-lubricating composites containing Ag, Ti3SiC2 and BaF2/CaF2 tested from room temperature to 600°C
Shi, Xiaoliang (author) / Yao, Jie (author) / Xu, Zengshi (author) / Zhai, Wenzheng (author) / Song, Siyuan (author) / Wang, Mang (author) / Zhang, Qiaoxin (author)
2013-07-15
14 pages
Article (Journal)
Electronic Resource
English
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