JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Leyao Xiong,Gaoming Mo,Ke Chen,Qing Huang
Ti 3 SiC 2 is a representative MAX phase that uniquely combines the merits of metals and ceramics. However, polymer-derived Ti 3 SiC 2 has been less extensively studied, especially in terms of its reaction mechanism and structural evolution. In this study, Ti 3 SiC 2 is synthesized by pressureless pyrolysis of PCS and TiH 2 , the structural evolution and chemical reactions occurring during the organic-inorganic conversion and synthesis process are investigated. The results show that Ti 3 SiC 2 with a mass fraction of 79.2 % can be achieved by pressureless pyrolysis of PCS and TiH 2 powders, with a Ti-to-Si atomic ratio of 3:1.7, at 1350 ℃. The presence of TiH 2 enhances the ceramic yield of PCS at 1000 ℃ compared to pure PCS, as some branched and crosslinking structures form between 100 ℃ and 300 ℃. By 800 ℃, the organic-inorganic conversion of PCS and the decomposition of TiH 2 are complete, resulting in the formation of amorphous SiC, free C and porous Ti. Concurrently, some SiC may transform into amorphous Si and C in the presence of porous Ti. At 1000 ℃, T 5 Si 3 forms within the porous Ti matrix, while TiC is generated on the periphery. Between 1200℃ and 1350 ℃, a reaction between these two phases and free C leads to the synthesis of Ti 3 SiC 2 . The formed Ti 3 SiC 2 phase begins to decompose at 1450 ℃ and completely breaks down into TiC, SiC, and TiSi 2 at 1600 ℃.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
DIAMOND AND RELATED MATERIALS
·
2014
·
IF 1.572
Zhengyang Li,Aiguo Zhou,Liang Li,Libo Wang,Meihua Hu,Shangsheng Li,Surojit Gupta
In this paper, synthesis of novel super hard and high performance composites of titanium silicon carbide–cubic boron nitride (Ti 3 SiC 2 –cBN) was evaluated at three different conditions: (a) high pressure synthesis at ~ 4.5 GPa, (b) hot pressing at ~ 35 MPa, and (c) sintering under ambient pressure (0.1 MPa) in a tube furnace. From the analysis of experimental results, the authors report that the novel Ti 3 SiC 2 –cBN composites can be successfully fabricated at 1050 °C under a pressure of ~ 4.5 GPa from the mixture of Ti 3 SiC 2 powders and cBN powders. The subsequent analysis of the microstructure and hardness studies indicates that these composites are promising candidates for super hard materials.
研究领域:
材料科学
·
力学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2020
·
IF 4.495
Qi Wang,Ming-hao Li,Guo-qing Chen,Xue-song Fu,Wen-long Zhou
Adjusting the growth kinetics of the interfacial compound layers may be a feasible way to enhance joint properties or service performance. In this study, the textured Ti 3 SiC 2 was obtained by hot-deforming the sintered Ti 3 SiC 2 (TSC), and the effects of the texture orientation on the interfacial microstructural evolution and growth kinetics of the interfacial compounds in the diffusion bonded TiAl/Ti 3 SiC 2 joints were investigated. The texture orientation of Ti 3 SiC 2 had little effect on the interfacial microstructural evolution but had a significant effect on the growth kinetics. When bonded at the same temperature, the growth rate of the interfacial compound layers in the TiAl/TSC ∥ joint (TSC ∥ , TSC ⊥ : Ti 3 SiC 2 with [0001] texture orientation parallel, perpendicular to the bonded seam) was fastest; which was slowest in the TiAl/TSC ⊥ joint and was in the middle in the TiAl/TSC joint. The highest shear strengths of the three different joints were similar (about 54 MPa).
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
POLYMER COMPOSITES
·
2017
·Vol. 39
·期 10
·3705-3711
·
IF 2.324
Mehdi Derradji,Abdelkhalek Henniche,Jun Wang,Abdul Qadeer Dayo,Jia-hu Ouyang,Wen-bin Liu,Aboubakr Medjahed
A new kind of nanocomposites was prepared from a high performance phthalonitrile resin and Ti 3 SiC 2 MAX phase ceramic nanoparticles. 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 on adding more nanofillers contents. Moreover, the phthalonitrile resin toughness was enhanced by 123% 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 nanofillers amounts. 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 micro-cracks. 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 phthalonitrile resin and opens the way for further research in the field. POLYM. COMPOS., 39:3705–3711, 2018. © 2017 Society of Plastics Engineers
研究领域:
材料科学
·
复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2025
·
IF 5.1
Yu Wang,Xudong Wang,Mian Li,Zhifang Chai,Qing Huang
The study investigates the structural evolution of Ti3SiC2 using the gaseous etchant CCl4, emphasizing its ability to selectively etch Si and Ti atoms to form an MXene (Ti3C2Cl2)/carbon composite and carbide-derived carbon (CDC). Under specific conditions, a complete conversion to the MXene is accomplished at a Ti3SiC2 : CCl4 molar ratio of 1 : 3.5, whereas higher CCl4 concentrations lead to further oxidation of Ti3C2Cl2 and formation of lamella CDC. This method presents an alternative chemical etching route to synthesize MXenes. Importantly, the production of CDC using CCl4 as an etchant could obtain carbon/MXene hybrids with significant implications for promising energy storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2025
·Vol. 36
·期 2
·e70128
·
IF 3.4
Yang Zhang,Qingsong Li,Xi Xie,Guoxin Sui
Most polymers and composites suffer from high friction and wear due to their inherent lack of self-lubrication under dry sliding friction. Herein, the lamellar Ti 3 SiC 2 MAX material is prepared via vacuum sintering of a powder mixture containing Ti, Si, and TiC in the molar ratio of 1:1.1:1.8 at 1500°C under a pressure of 30 MPa for 2 h. Combined with a soft graphite phase (5 wt%), self-lubricating PEEK/Graphite/Ti 3 SiC 2 (PG-T) composites are successfully prepared, dependent on Ti 3 SiC 2 (5 and 15 wt%) as a hard reinforced phase and lubrication additive. PG-T composites are fabricated via a multistep compounding approach using a twin-screw extruder. The incorporation of Ti 3 SiC 2 and graphite within the PEEK matrix manifests a highly pronounced synergistic effect, which not only facilitates effective lubrication but also significantly enhances the load-bearing capability, thereby effectively circumventing direct contact between the counterface and the polymeric matrix. The sliding tests are conducted on the pins (diameter: 6.0 mm, height: 17.0 mm) and friction pair (45#steel, roughness Ra: 148 nm) under dry friction. In terms of PV-condition (up to 6 MPa and 3 m/s) (PV is a parameter that reflects the load-bearing capacity of polymer materials, which is defined by multi-plying the pressure P by the sliding speed V), PG5-T15 exhibits self-lubricating properties, featured by an average coefficient of friction (ACOF) as low as 0.119 for the pin-plate test and a specific wear rate (SWR) of only 0.58 × 10 −6 mm 3 /Nm. Meanwhile, PG-T composites present excellent thermal properties based on the thermal expansion coefficients (CTEs) and storage moduli (G′) during friction and wear. Considering the practical applications of tribo-composites, these findings highlight the potential of PG-T composite as a candidate for demanding tribological applications.
研究领域:
材料科学
·
摩擦学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Zhiwei Wang,Hongfeng Yin,Yun Tang,Qin Hou,Chen He,Hudie Yuan
Herein, we constructed an ordered nanoporous embedding nanoparticles composite by anodic oxidation of Ti 3 SiC 2 in fluorine containing organic electrolyte. Compared to anodized Ti which resulted in TiO 2 nanotubes , the anodized Ti 3 SiC 2 (ATSC) led to the formation of nanostructured TiO 2 /C/SiO 2 composite. The morphologies of oxides in the composite also varied with different anodization parameters. The ATSC could be directly used as an electrode without further processes, which possessed a superior structure and composition with a visible-light photocurrent density of 7.56 μA cm −2 , initial reversible area capacity of 6.18 F cm −2 , which were respectively 1.32 and 6.87 times higher than those of the anodized Ti (AT), respectively. The ATSC synthesized by such a feasible fabricating strategy shows favorable photoelectrochemical properties and remarkable stability, and may broaden the bifunctional material prospects of anodized MAX phases.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Wenjie Zhu,Yuwei Ren,Minghang Li,Yichun Bi,Ce Zheng,Xiaoqiang Li
Ti 3 SiC 2 MAX phase with a purity of up to 98 vol%, comparable to the purity of commercial Ti 3 SiC 2 prepared by Hot Pressing (HP), was synthesized by Reactive Melt Infiltration (RMI) in this work, overcoming the inherent shortcoming of RMI products' poor purity. Compared with HP Ti 3 SiC 2 , the lower preparation temperature and pressure-free fabrication of high-purity RMI Ti 3 SiC 2 make it promising for applications in the Ceramic Matrix Composites (CMCs), especially for complex shaped CMCs parts. This work systematically studied the generation mechanism of Ti 3 SiC 2 with the help of κ-Al 2 O 3 during the RMI process, which enables the successful production of high-purity Ti 3 SiC 2 . The toughening mechanism of Ti 3 SiC 2 in Ti 3 SiC 2 composites was also characterized and analyzed. This work attempts to provide a new idea for introducing high-purity ceramic phase into CMCs by RMI process.
研究领域:
材料科学
·
陶瓷材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2023
·
IF 5.7
Weichao Wang,Liuying Wang,Gu Liu,Chaoqun Ge,Long Wang,Bin Wang,Jie Huang
Ti 3 SiC 2 exhibits considerable potential for high-temperature microwave absorption due to its relatively high melting point and conductivity. In this study, we successfully prepared Ti 3 SiC 2 /Al 2 O 3 -13%TiO 2 heterogeneous coatings through granulation and plasma spraying techniques. This investigation covered composition, microstructure, oxidation resistance, and a focused analysis of the temperature-dependent permittivity of the coatings. The augmentation in Ti 3 SiC 2 content leads to an escalation in the polarized component, consequently elevating susceptibility to dielectric dispersion. With rising temperature, polarization within the coatings gradually establishes, prompting a transition from polarization relaxation loss to conduction loss as the dominant dielectric loss mechanism. At 5 wt% Ti 3 SiC 2 content, the coating achieves an effective bandwidth of 2.2 GHz at 873 K, with a mere 1.4 mm thickness. Moreover, the coating maintains exceptional oxidation resistance below 700 °C. Ti 3 SiC 2 /Al 2 O 3 -13%TiO 2 coatings manifest as strong contenders for high-temperature microwave absorption applications, and plasma spraying emerges as a promising technique for fabricating high-performance microwave absorption coatings.
研究领域:
材料科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2021
·Vol. 18
·期 5
·1670-1676
·
IF 1.968
Xiaobing Zhou,Lin-Kun Shi,Shunrui Zou,Jie Xu,Yihe Liu,Peter Tatarko
A pair of Ti 3 SiC 2 reinforced with SiC whiskers (SiC w /Ti 3 SiC 2 ) composites was successfully joined without any joining materials using electric field-assisted sintering technology at a temperature as low as 1090°C ( T i ) and a short time of 30 s. The microstructure and mechanical properties of the obtained SiC w /Ti 3 SiC 2 joints were investigated. The solid-state diffusion was the main joining mechanism, which was facilitated by a relatively high current density (~586 A/cm 2 ) at the joining interface. The shear strength of the sample joined at 1090°C was 51.8 ± 2.9 MPa. The sample joined at 1090°C failed in the matrix rather than at the interface, which confirmed that a sound inter-diffusion bonding was obtained. A rapid and high efficient self-joining process may find application in the case of SiC w /Ti 3 SiC 2 sealing cladding tube and end cap.
研究领域:
材料科学
·
工程学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2022
·Vol. 49
·期 3
·4863-4871
·
IF 5.532
Kai Su,Xuekun Tian,Zhenzhen Li,Xinhong Liu
Biochar was proposed as a novel carbon source for synthesizing Ti 3 SiC 2 powder with high purity by a simple pressureless sintering at 1673 K, and Ti 3 SiC 2 grains exhibited the typical nanolayered structure. The oxidation behavior of Ti 3 SiC 2 powder showed the parabolic law during isothermal oxidation from 1273 K to 1473 K. Dense and continuous oxidation layer consisting of mixed TiO 2 and SiO 2 was formed rapidly on the surface of Ti 3 SiC 2 particles as a diffusion barrier , which effectively retarded the inward diffusion of oxygen, conferring good oxidation resistance of the powder.
研究领域:
材料科学
·
无机非金属材料
·
高温材料
·
复合材料
·
材料化学
·
固体化学
·
功能材料
✓ 已验证
DOI
高影响因子
Journal of Advanced Ceramics
·
2020
·Vol. 9
·期 4
·462-470
·
IF 2.889
Zhou Xiaobing,Jing Lei,Kwon Yong Duk,Kim Jin-Young,Huang Zhengren,Yoon Dang-Hyok,Lee Jaehyung,Huang Qing
High strength SiC whisker-reinforced Ti 3 SiC 2 composites (SiC w /Ti 3 SiC 2 ) with an improved thermal conductivity and mechanical properties were fabricated by spark plasma sintering. The bending strength of 10 wt% SiC w /Ti 3 SiC 2 was 635 MPa, which was approximately 50% higher than that of the monolithic Ti 3 SiC 2 (428 MPa). The Vickers hardness and thermal conductivity ( k ) also increased by 36% and 25%, respectively, from the monolithic Ti 3 SiC 2 by the incorporation of 10 wt% SiC w . This remarkable improvement both in mechanical and thermal properties was attributed to the fine-grained uniform composite microstructure along with the effects of incorporated SiC w . The SiC w /Ti 3 SiC 2 can be a feasible candidate for the in-core structural application in nuclear reactors due to the excellent mechanical and thermal properties.
研究领域:
材料科学
·
核能工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）