The Effect of Magnéli phase Ti4O7 as an additive in air-sintered TiO2 ceramics

Geng, Xinwei; Xia, Yongfeng; Liang, Hanqin; Yao, Dongxu; Zeng, Yu-Ping

doi:10.1016/j.ceramint.2023.08.179

Cited by 5 publications

(1 citation statement)

References 29 publications

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“…These elements can combine with O 2 in the environment during friction to form oxides with unique shear properties and lubrication. The Magnéli phase MoO 3 with low shear modulus formed by Mo during the friction and wear process has good wear resistance and friction reduction effects [10]. Presently, the enhancement of mechanical and tribological properties in CrN-based lms primarily involves the incorporation of elements such as Al [11], Si [12], W [13], Ag [14], Cu [15], and Mo [16].…”

Section: Introductionmentioning

confidence: 99%

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Kong,

Luan,

2024

Preprint

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The Cr-Mo-N films of different Mo contents are developed by the RF (Radio Frequency) magnetron sputtering. The XRD (X-ray Diffraction), SEM (Scanning Electron Microscope), EDS (Energy Dispersive Spectroscopy), nano-indenter and tribo-tester will be used to analyze the composition, phase structure, mechanical and tribological properties of films. The results reveal that the Cr-Mo-N film adopts a face-centered cubic structure, primarily oriented along the (111) plane. When the Mo content falls below 17.72%, increasing the Mo concentration leads to a slight increase in film microhardness, accompanied by a significant decrease in the average friction coefficient. On the contrary, exceeding a Mo content of 22.76% triggers structural changes within the film. These alterations are reinforced by solid solution and fine grain strengthening, further compounded by the presence of Mo2N. Consequently, film microhardness undergoes a considerable increase, while the average friction coefficient remains relatively stable irrespective of Mo content. This underscores the consistent low friction coefficient characteristic exhibited by Mo2N films.

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Section: Introductionmentioning

confidence: 99%

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Kong,

Luan,

2024

Preprint

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Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Li,

Gong,

Hossain

et al. 2024

Asia-Pacific J Chem Eng

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The construction of high‐efficiency self‐supported ceramic photoelectrode based on ideal semiconductor materials is essential for achieving effective degradation of pollutants by photoelectrocatalysis (PEC) technology. Herein, a Ti4O7/h‐BN composite ceramic photoelectrode with a unique microstructure was fabricated by a step‐by‐step calcination process and used in PEC water pollution remediation. The PEC activity of Ti4O7 ceramic photoelectrode could be enhanced by introducing hexagonal boron nitride (h‐BN) nanoparticles on the surface. The most optimized Ti4O7/h‐BN photoelectrode exhibited the decolorization rate of active brilliant blue KN‐R at about 97.79% in 30 min. The PEC activities could remain stable during five degradation cycles. The excellent photoelectrocatalytic performance of Ti4O7/h‐BN ceramic photoelectrode could be attributed to the low Tafel slope, low charge transfer resistance, large electrochemical active area, and excellent photo‐generated carrier separation efficiency. A type‐II heterojunction was formed between the Ti4O7 and h‐BN, which caused more effective carrier separation and enhanced the generation of dominant active species •O2− and h+. This work provided a mature synthesis strategy of Ti4O7/h‐BN self‐supported ceramic photoelectrodes with excellent practical application prospects to achieve superior PEC performance for water purification.

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Providing ceramics high-temperature self-lubrication by inducing vacancies concentration variation via thermal and frictional synergies

Li,

Lin,

Song

et al. 2024

Tribology International

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The Effect of Magnéli phase Ti4O7 as an additive in air-sintered TiO2 ceramics

Cited by 5 publications

References 29 publications

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Providing ceramics high-temperature self-lubrication by inducing vacancies concentration variation via thermal and frictional synergies

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The Effect of Magnéli phase Ti4O7 as an additive in air-sintered TiO2 ceramics

Cited by 5 publications

References 29 publications

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Influence of Mo contents on optimizing the microstructure and tribological properties of Cr-Mo-N films

Preparation of Ti4O7/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification

Providing ceramics high-temperature self-lubrication by inducing vacancies concentration variation via thermal and frictional synergies

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Preparation of Ti₄O₇/h‐BN self‐supported ceramic photoelectrode and its photoelectrocatalytic performance for water purification