Conghui Meng

Tribochemically Driven Carbon Release Lubrication in Zr‐Incorporated (Ti,Nb) 2 AlC via Selective M─C Bond Cleavage

Cheng‐Feng Du, Shiyao Lei, Conghui Meng, Yifei Xiao et autres

ABSTRACT Benefiting from the heterodesmic bond character, MAX phase ceramics are promising candidates for integrating mechanical and self‐lubricating properties under harsh conditions. However, the robust M─C bonds cause hard metal carbide debris on worn surfaces, resulting in a persistently high coefficient of …

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Multifunctional roles of layered double-hydroxides in self-lubricative carbon fiber reinforced PEEK-PTFE composites

Ruoyu Wu, Shiyao Lei, Conghui Meng, Mingyu Fu et autres

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In-situ decomposition of (Cr,Ti,Mo)4AlC3 MAX phase for enhancing wear resistance of CoCrFeNiAl high-entropy alloy through the formation of multiple carbides

Mingxiang Tang, Shiyao Lei, Guodong Zhang, Conghui Meng et autres

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MXene‐Controlled PTFE Release for Ultra‐Low Friction PEEK Composites

Cheng‐Feng Du, Lili Xue, Mengzhao Wang, Mingyu Fu et autres

Abstract Poly(ether‐ether‐ketone) (PEEK) is a key structural material in lightweight robots, yet its poor self‐lubricity limits use in moving components. This study develops PEEK‐based composites incorporating poly(tetra‐fluoroethylene) (PTFE) as the lubricating phase and Ti 3 C 2 T x MXene as transfer …

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Synthesis of Ti-Nb-Hf quinary M2AlC MAX ceramics and the effects of Hf incorporation on the anti-wear performance up to 800 °C

Shiyao Lei, Conghui Meng, Lin Fan, Cheng‐Feng Du et autres

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Synthesis of quinary M3AlC2 (M = Ti, Cr, and Mo) o-MAX and its energy dissipation-enhanced anti-wear performance

Yaqing Xue, Chuan‐Chao Wang, Shiyao Lei, Hong Yu et autres

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Miscible chemical ordering in Ti-Cr-Mo quinary system by solid solution of Mo2Ti2AlC3 and Cr2.5Ti1.5AlC3 o-MAXs

Cheng‐Feng Du, Chuan‐Chao Wang, M.K. Xu, Yaqing Xue et autres

Out-of-plane ordering is promising for separately adjusting the heterodesmic chemical bonding inside the MAX phase thus tuning their properties, while constructing the out-of-plane ordered-MAX (o-MAX) is still a challenge. In this work, a strategy towards o-MAX by solid solutions of two existing …

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Optimizing the Cr and V content in quaternary MAX phase for high-temperature lubricity and wear resistance

Yaqing Xue, Hong Yu, Hongwei Liang, Xiaomei Wang et autres

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Synthesis, chemical bonding, and mechanical properties of Ti–Nb–Hf ternary solid solution MAXs

Conghui Meng, M.K. Xu, Shiyao Lei, Yifei Xiao et autres

Novel Ti 1− x Nb 1− x Hf 2 x AlC MAX phase ceramics with excellent mechanical properties are synthesized via M-site solid solution, and their electronic structure, bonding status, and elastic properties are investigated using DFT calculations.

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Transformation of chemical ordering and configuration entropy in quaternary Cr x Ti 0.75Mo 0.75V 1.5− x AlC 2 MAX system

Yaqing Xue, Hong Yu, Hongwei Liang, Xiaomei Wang et autres

Two new quaternary CrxTi0.75Mo0.75V1.5−xAlC2 (x = 1.25, 1) MAXs and Cr0.75Ti0.75Mo0.75V0.75AlC2 are synthesized by hot pressing. Interestingly, an unprecedented transition in M-site atomic occupancy from out-of-plane order to solid solution is observed along with the composition variation, which also increases the configurational …

Achieving the ultra-low friction and wear rate of PEEK-PTFE composites by Ti3C2Tx MXene reinforcement

Lili Xue, Qingqing Xu, Conghui Meng, Shiyao Lei et autres

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