Journal of Materials Chemistry C
·
2025
·
IF 5.1
Jiacheng Tan,Yi Wang,Imran Ali,Jun Chen,Haibo Zeng
Two-dimensional MXene materials have demonstrated significant potential in the field of nonlinear optics. However, their environmental stability remains a challenge, limiting their practical applications. In this study, a fluoride-free etching strategy is proposed for the synthesis of ultrastable partially etched Ti3AlC2. A tunable transition from nonlinear scattering (NLS) to saturable absorption (SA) is achieved via ultrasonic-assisted particle size regulation. This transformation is attributed to the enhanced heat dissipation capacity of the samples resulting from the increase in the specific surface area. Z-scan measurements reveal that the sample (S-Ti3Al1−xC2) obtained after 60 minutes of ultrasonication exhibits pronounced saturable absorption under 532 nm laser excitation, with a nonlinear absorption coefficient of −2.4844 cm GW−1 and a modulation depth of 29.57%, comparable to that of fully etched Ti3C2Tx. In addition, the presence of residual aluminum atoms endows the material with excellent oxidation resistance. After undergoing a high-temperature aging process at 80 °C for 30 hours, S-Ti3Al1−xC2 retained over 85% of their initial saturable absorption properties. Furthermore, no TiO2 peaks were observed in the XRD pattern, indicating minimal oxidation. These findings demonstrate a safe and effective preparation method for the synthesis of highly stable nonlinear optical materials.
研究领域:
材料科学
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非线性光学
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纳米材料
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固体物理
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Muhammad Chhattal,Andreas Rosenkranz,Yu Kaihuan,Philipp G. Grützmacher,Zhenbin Gong,Junyan Zhang
Due to the long-standing use of MAX phase materials since the 1960s and the emergence of MXenes in 2011, both are celebrated for their extraordinary mechano-tribological properties, including layered structures, high mechanical strength , and thermal conductivity . Nevertheless, there remains a crucial research gap in comprehensively comparing their tribological performance under solid lubrication , underscoring the need for an in-depth investigation. To close this research gap, we deposited MAX phase and MXene coatings by spray-coating on stainless-steel substrates. Subsequently, we evaluated their tribological properties, deciphered the underlying mechanisms using linear-reciprocating tribometry and high-resolution material characterizations. Our results demonstrated that the MXene coatings surpass the MAX phase coating in friction reduction by 81.82 %. In terms of wear depth, MXene coating has shown a notably reduced depth compared to both the reference steel sample and the MAX phase coating. Advanced tribochemical analysis indicates that MXenes' superior tribological performance is endorsed by their ability to form a thick, patchy-like transferlayer on the counterbody, which results from their ability to shear and delaminate under acting contact stress. Our study offers a framework for future investigations into utilizing MXene-based materials in tribological applications.
研究领域:
材料科学
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摩擦学
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DOI
高影响因子
ADVANCED ENGINEERING MATERIALS
·
2020
·Vol. 22
·期 5
·1901300
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IF 3.217
Zhongya Pang,Xingli Zou,Shangshu Li,Wei Tang,Qian Xu,Xionggang Lu
Ti 3 AlC 2 is electrochemically synthesized from titanium-rich slag/Al 2 O 3 /C mixtures in molten salts. The intermediate products are systematically analyzed to investigate the formation process of Ti 3 AlC 2 . The results show that the synthesis process typically involves an electrodeoxidation process and in situ carburization/combination process. In addition, most of the undesired metallic oxides contained in the titanium-rich slag are removed effectively during the electrolysis process, and the removal mechanism of these undesired metallic oxides is further discussed. The influences of different molten salts (including molten CaCl 2 and CaCl 2 –NaCl) and temperatures (range of 800–1000 °C) on the final products are also studied. The results show that these electrosynthesis conditions influence the morphology and phase composition of the products. The synthesized Ti 3 AlC 2 particles possess an irregular plate-like morphology. It is suggested that the molten salt electrochemical synthesis technology is a promising process to produce Ti 3 AlC 2 and/or other MAX phases from multicomponent complex ores.
研究领域:
材料科学
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电化学
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陶瓷学
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无机化学
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冶金学
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DOI
高影响因子
CERAMICS INTERNATIONAL
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2020
·
IF 3.83
Bingbing Chen,Aihu Feng,Kun Liu,Jiao Wu,Yun Yu,Lixin Song
Ti 3 C 2 T x is a promising intercalation-type electrode material for capacitive deionization (CDI). However, Ti 3 C 2 T x , obtained from traditional synthesized Ti 3 AlC 2 , is with large particle size and undersized interlayer space, which can easily lead to the longer ion diffusion path, fewer adsorption sites, and higher ion diffusion barrier in CDI process. In this work, subsize and Na + intercalated Ti 3 C 2 T x (Na + -Ti 3 C 2 T x -MS) was prepared by HF etching KCl-assisted molten-salt synthesized Ti 3 AlC 2 and following NaOH treatment. The Na + -Ti 3 C 2 T x -MS achieves a high electrosorption capacity of 14.8 mg/g and a high charge efficiency of 0.81 at the applied voltage of 1.2 V in 100 mg/L NaCl solution. Besides, the stable desalination performance of Na + -Ti 3 C 2 T x -MS has been confirmed. The superior performance of Na + -Ti 3 C 2 T x -MS can be attributed to the subsize particle and larger interlayer space. Both two factors can effectively increase ions adsorption sites, shorten diffusion path lengths, and reduce diffusion barriers in the CDI process.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Yina Du,Ji-Xuan Liu,Yifeng Gu,Xin-Gang Wang,Fangfang Xu,Guo-Jun Zhang
Textured and untextured M n+1 AX n compounds, Ti 2 AlC and Ti 3 AlC 2 , namely MAX phases have been synthesized and examined with respect to their corrosion resistance in static supercritical water at 500 °C. The textured ceramics were obtained by hot forging process at high temperatures. Both X-ray diffraction and SEM analysis revealed well alignment of c -plane of MAX phases parallel to the hot-forging surface. Better corrosion resistance on the surface perpendicular to the hot-forged direction was verified by SEM. On the other hand, the side surfaces of the samples showed thick oxidation layers and abundant cracks. The (00 l ) faces consist of strongly bonded Ti 3 C 2 and Ti 2 C layers in Ti 3 AlC 2 and Ti 2 AlC, respectively, hence exhibit higher resistance to water corrosion. On the contrary, the side surfaces where most of weakly bonded interlayers of these hexagonal phases were exposed tend to be easily corroded especially through Al-layers. The corrosion process involved a phase transition of oxidized product, i.e. TiO 2 from anatase to rutile phase, which gave rise to the formation of cracks due to accompanied volume changes.
研究领域:
材料科学
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腐蚀工程
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DOI
高影响因子
CERAMICS INTERNATIONAL
·
2018
·Vol. 45
·期 5
·5448-5453
·
IF 3.057
Yongqiang Tan,Chenchen,Sigong Li,Xiaochun Han,Jiaxiang Xue,Tong Liu,Xiaosong Zhou,Shuming Peng,Haibin Zhang
TiO 2 was selected as effective sintering aid for pressureless sintering of Ti 3 AlC 2 ceramics in this study. The addition of only 5 wt% TiO 2 largely promotes the densification and nearly dense Ti 3 AlC 2 ceramic was obtained by pressureless sintering at 1500 °C. Significant strengthening and toughening effects were observed with the addition of TiO 2 . High Vickers hardness , flexural strength and fracture toughness of 3.22 GPa, 298 MPa and 6.2 MPa m −1/2 , respectively, were achieved in specimen pressureless sintered with 10 wt% TiO 2 . Additionally, the addition of 5 wt% TiO 2 had no deleterious effect on the excellent oxidation resistance of Ti 3 AlC 2 ceramic under 1200 °C water vapor atmosphere, while addition of 10 wt% TiO 2 accelerates the oxidation rate by two orders of degree.
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DOI
高影响因子
JOURNAL OF ELECTRONIC MATERIALS
·
2025
·
IF 2.5
Li Song,Chen Zhenyu,Chen Xingang,liu Kang,Ma Lintao,Ao Yi
To enable effective monitoring of human physiological signals, this study fabricates a piezoresistive flexible pressure sensor using a composite of Ti 3 AlC 2 (a type of MXene material) and NaKC 4 H 4 O 6 as the sensing material. The structure of Ti 3 AlC 2 before and after composite formation was observed via scanning electron microscopy, while x-ray diffraction, x-ray photoelectron spectroscopy, and energy-dispersive x-ray spectroscopy characterizations were conducted. Based on these analyses, the binding behavior between Ti 3 AlC 2 and NaKC 4 H 4 O 6 , as well as the mechanism underlying the enhanced sensing performance, were elucidated. The mechanism underlying the enhanced pressure response was further analyzed from the perspective of heterojunctions. In pressure testing, the as-fabricated pressure sensor demonstrates outstanding performance, including a high sensitivity of 2.46%/kPa within the range of 0–30 kPa and a rapid response time of 0.2 s. It has also successfully detected scenarios including wrist flexion, pulse beats, and fist clenching, thereby demonstrating promising application potential in physiological signal monitoring.
研究领域:
材料科学
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传感器与仪器
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柔性电子学
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纳米材料
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可穿戴设备
✓ 已验证
DOI
高影响因子
HIGH PERFORMANCE POLYMERS
·
2017
·
IF 1.179
Abdelkhalek Henniche,Mehdi Derradji,Jun Wang,Wen-bin Liu,Jia-hu Ouyang,Aboubakr Medjahed
In this work, Ti3AlC2 Mn+ 1AXn (MAX) phase ceramic nanoparticles were prepared and used as new kind of reinforcement for a typical high-performance phthalonitrile (PN) resin. The synergistic combination of both phases led to nanocomposites with improved thermal and mechanical properties. For instance, the thermal conductivity and tensile properties of the neat resin were highly enhanced upon adding more nanofiller contents. Moreover, the PN resin toughness was ameliorated by 129% at the maximum nanoparticles loading of 15 vol%. The experimental investigations were also compared with predictions from series, Halpin–Tsai, and Kerner models, and a full discussion was provided. A high-resolution transmission electron microscope confirmed the ability of the MAX phase to create a conductive network, especially at high nanofiller amounts. Scanning electron microscope (SEM) analyses of the tensile fractured surfaces revealed positive changes in the morphology, such as an increase in the roughness and amount of hackling as well as the formation of multiple microcracks. The MAX phase also enhanced the thermal stability, stiffness, and glass transition temperature of the neat resin. This work confirms the superiority of the MAX phase ceramics over the traditional ones in enhancing the properties of the PN resin and opens the way for further research in the field.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2026
·
IF 7.9
Songting Jiang,Chenghao Zhang,Chun Li,Xiaoqing Si,Zongjing He,Lin Cao,Chengxian Li,Shisheng Huang,Jun Wang,Yang Liu,Jian Cao
In this work, Ti 3 AlC 2 ceramics were joined by reactive air brazing using Ag–CuO fillers. The Ag–4CuO filler showed the best wettability, with a minimum contact angle of 13.1°. Continuous and dense brazed seams were formed at 1000 °C-1100 °C. The joint interface consisted of an Ag–rich brazed seam and a TiO 2 /α-Al 2 O 3 layered reaction zone. Increasing brazing temperature, the reaction layer evolved from TiO 2 –dominated products with limited Al 2 O 3 to a TiO 2 /Al 2 O 3 /TiO 2 trilayer structure, whereas increasing CuO content thickened the oxide reaction layer. The maximum shear strength reached 72.2 MPa at 1050 °C for 30 min with 4 mol.% CuO. Fracture was dominated by brittle features, with fracture regions varying with the reaction-layer structure. These results provide experimental guidance for reactive air brazing of Ti 3 AlC 2 ceramics.
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DOI
高影响因子
MATERIALS CHARACTERIZATION
·
2025
·
IF 5.5
Wenjun Yu,Zihua Lei,Wenqian Pan,Yang Li,Songlin Ran,Le Fu
In this study, we sought to develop structure-function integrated ZrO 2 -SiO 2 ceramic nanocomposites by simultaneously incorporating one-dimensional (1D) carbon nanotubes (CNTs) and three-dimensional (3D) Ti 3 AlC 2 MAX phase. The CNTs and Ti 3 AlC 2 were introduced into the ZrO 2 -SiO 2 precursor powder via a straightforward wet ball milling process. CNTs maintained excellent structural stability during sintering, whereas the Ti 3 AlC 2 decomposed into Al and TiC. The flexural strength of the nanocomposite was enhanced by 34 % attributed to the pull-out strengthening effect of the CNTs. The uniformly distributed 1D CNTs and the in-situ formed 3D TiC particles created an interconnected network within the ceramic matrix, thereby providing efficient pathways for electron transport. Consequently, the electrical conductivity and electromagnetic wave absorption properties of the nanocomposites were markedly improved. This study demonstrates an effective approach to developing structure-function integrated ceramic composites by exploiting the dimensional differences and synergistic interactions between the filler phases.
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
·
2026
·
IF 4.6
Tianrun Ma,Fengshun Du,Bohua Duan,Dezhi Wang,Zhuangzhi Wu,Xinli Liu
The development of novel Mo alloys that combine high strength and toughness has been a critical goal in the research community. A co-reinforced Mo alloy was prepared through powder metallurgy by adding partially stabilized zirconia (PSZ) and MAX phase Ti 3 AlC 2 to the Mo matrix. The influence of varying PSZ/Ti 3 AlC 2 ratios on the microstructure and mechanical properties of Mo alloys was thoroughly studied. The results indicate that as the PSZ/ Ti 3 AlC 2 ratio is increased, the density, elongation, and fracture toughness of sintered molybdenum alloys are enhanced, while their strength and hardness also show varying degrees of improvement. At a PSZ/Ti 3 AlC 2 ratio of 7:3, the prepared Mo alloy exhibits optimal comprehensive properties, with a relative density of 96.8%, a hardness of 193.1 Hv, a tensile strength of 537.4 MPa, an elongation of 21.69%, and a fracture toughness of 29.1 MPa·m 1/2 . The synergistic effect of PSZ and Ti 3 AlC 2 optimizes the alloy's microstructure and enhances its overall performance through multiple mechanisms. PSZ has a more pronounced effect on the ductility, whereas Ti 3 AlC 2 plays a more significant role in enhancing the strength. The findings provide a new strategy for the preparation of high-performance molybdenum alloys.
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产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
·
2025
·
IF 14.3
Zhixiong Huang,Yuzhan Lu,Shaoxiong Weng,Guoqin Jiang,Wanglin Ying,Zongyi Deng
The rapid development of reusable hypersonic vehicles has put forward urgent demand for reusable large-area thermal protection materials. Herein, a novel ceramizable composite modified by Ti 3 AlC 2 and B 4 C was proposed, and its long-term oxidation resistance and reusability after isothermal cyclic high-temperature oxidation experiment at 1200°C for 30 min for 1–10 cycles were explored. The high-temperature bending strength after treated once reached 80.0 MPa, and it kept above 43 MPa and the structural integrity of the samples was good even after eight high-temperature oxidation treatments, demonstrating that the ceramizable composite possessed good application potential as reusable large-area thermal protection materials. The anti-oxidation mechanism was proposed based on microstructure evolution, element distribution, phase evolution, and thermodynamics analyses during the high-temperature oxidation cycles. Ti 3 AlC 2 and B 4 C underwent a series of ceramization reactions with O 2 and pyrolytic carbon (PyC), converting the ceramizable composite into a ceramized composite in-situ and playing the roles of oxygen consumption, self-healing, oxygen inhibition, carbon fixation, and heat absorption, by which carbon fibers and PyC were protected.
研究领域:
材料科学
·
航空航天工程
·
高温材料学
·
复合材料学
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热防护系统
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固态化学
·
结构材料
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）