Advances in Materials Science and Engineering
·
2022
·
IF 2.098
Liang Li,Yuqi Chen
Due to their high melting point, low density, and affordable price, TiC ceramics have emerged as one of the most promising ultrahigh temperature structural materials. However, its development and usage are severely constrained by its weak mechanical characteristics. The Ti2AlC-TiC and Ti3AlC2-TiC composites were synthesized by using the laminated metal-ceramic Ti2AlC/Ti3AlC2 as the binder, combined with high-temperature and high-pressure sintering technology (GPa order of magnitude confinement system). The thermal analysis shows that the exothermic heat of Ti/1.2Al/2TiC is less than that of 3Ti/1.2Al/2C, 2Ti/1.2Al/C, and 3Ti/1.5Al/C. The ratio of Ti/1.2Al/2TiC can suppress the thermal explosion phenomenon during the sintering process and improve the safety of the high-pressure sintering process. XRD results showed that the main composition of the sintered products was Ti2AlC-TiC at 2∼3.5 GPa and Ti3AlC2-TiC at 4∼5 GPa. As the sintering pressure increased from 2 GPa to 5 GPa, the bonding phase changed from Ti2AlC to Ti3AlC2. The thickness of the synthetic Ti3AlC2 layer is near 0.1 µm under 5 GPa. The average friction coefficient of Ti2AlC-TiC composites sintered 2 GPa with POM is as low as 0.1767, while the average friction coefficient of Ti3AlC2-TiC composites with POM increased to 0.3468∼0.3797. The wear width of Ti2AlC-TiC is lower than that of Ti3AlC2-TiC composites sintered under 4–4.5 GPa. The wear width of Ti3AlC2-TiC composites decreases following the rise of sintering pressure and is reduced to 0.3504 mm under 5 GPa. Ti2AlC-TiC and Ti3AlC2-TiC composites with PP ball counterparts have friction coefficients of 0.375 to 0.45 and worse wear resistance than that of POM balls. Ti3AlC2-TiC composites synthesized at 5 GPa with a Cu ball had the smallest friction coefficient (0.4558) and the smallest wear scar width (0.6289 mm). The friction coefficients and wear widths of synthetics with Al pairs ranged from 0.48–0.697 and 0.851–1.087 mm, respectively, and varied irregularly with increasing sintering pressure. Ti2AlC-TiC composites synthesized at 2 GPa with agate and glass pairs have coefficients of friction of 0.5 and 0.61, respectively. Abrasion widths of Ti2AlC-TiC composites synthesized at 2 GPa with agate and glass pairs were 1.3 mm and 0.72 mm, respectively. The friction coefficient of synthetics with agate and glass pairs increases with increasing sintering pressure. The magnetization and magnetization intensity of the Ti3AlC2-TiC composites are stronger than those of Ti3AlC2. Ti2AlC-TiC and Ti3AlC2-TiC composites held promise to serve in the field of ceramic grinding processing applications.
研究领域:
材料科学
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机械工程
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物理学
✓ 已验证
产品关联
DOI
高影响因子
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
·
2021
·Vol. 52
·期 2
·767-775
·
IF 2.556
Zhu Yabin,Chai Jianlong,Shen Tielong,Wang Zhiguang
Al 2 O 3 -ZrO 2 -TiC composites with different proportions of TiC were prepared by ball milling and spark plasma sintering. Structural characterization revealed that the composites exhibited fine and homogeneous microstructures. No other phases except α-Al 2 O 3 , t-ZrO 2 and c-TiC were detected by XRD in all Al 2 O 3 -ZrO 2 -TiC composites. The internal stress induced by the mismatch of the thermal expansion coefficients result in a shift of t-ZrO 2 diffraction peak. SEM and TEM observations showed that the Al 2 O 3 grain size was inversely proportional to the TiC content, while the grain sizes of ZrO 2 and TiC stayed nearly constant. HRTEM micrograph presented that there are glassy phase boundaries with thickness of several nanometers around the TiC grains. As the TiC content increases, the relative density and hardness decreased from 99.2 to 97.7 pct and from 21.0 to 15.8 GPa, respectively. Compared with Al 2 O 3 -ZrO 2 matrix, composites with TiC exhibited lower flexural strength but enhanced fracture toughness. Composite with TiC of 10 vol pct possessed the best friction property. The increased porosity was mainly responsible for the deterioration of mechanical and friction properties except for the fracture toughness. The improvement in fracture toughness with increasing TiC content was attribute to the crack deflection and pinning effects induced by the TiC particles.
研究领域:
材料科学
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机械工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·
IF 3.5
Sun Haiyang,Ou Junfei,Cheng Liang,Sun Lingyan,Lu Yalin,Liu Wenchang
To improve the deformability of 6061Al–TiC composites, a laminated structure of 6061Al–TiC/6061Al was prepared by combining spark plasma sintering (SPS) and hot roll bonding. T6 treatment was applied to the roll-bonded 6061Al–TiC/6061Al laminated composites. Different contents of TiC nanoparticles were added into the inner 6061Al–TiC composite layers. The effect of the volume fraction of the TiC nanoparticles was revealed on the microstructure characterization, texture evolution and tensile properties. The recrystallization fraction and grain size of the 6061Al–TiC composite layers decreased with increasing TiC nanoparticle volume fraction. The texture in rolled 6061Al–TiC composite layers was characterized by weak Goss and β fiber. After T6 treatment, the texture in the 6061Al was cube component, while the recrystallized grains in the 6061Al–0.2TiC and 6061Al–0.5TiC composite layers exhibited cube and R components, respectively. The tensile strength of the 6061Al–TiC/6061Al laminated composites first increased with the volume fraction of TiC nanoparticles and then decreased when the TiC nanoparticles addition exceeded 0.5 vol%. Whereas, the elongation of the 6061Al–TiC/6061Al laminated composites decreased continuously with increasing the volume fraction of TiC nanoparticles. The ultimate strength and yield strength, respectively reached maximum values of 337 MPa and 316 MPa for the 6061Al–0.5TiC/6061Al laminated composites, and the elongation of the laminated composites was 21.6%. Graphical abstract
研究领域:
材料科学
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金属材料
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复合材料
✓ 已验证
产品关联
DOI
高影响因子
KEY ENGINEERING MATERIALS
·
2014
·
IF 0
Jin Jia,Yuan Yuan Zhu,Ya Fei Zhang,Ruo Yu Chen,Bao Lin Xing,Ai Guo Zhou
Carbide-derived carbons (CDCs) are produced from carbides by removing non-carbon elements in the process of selective etching. In this paper, CDC was prepared from TiC by chlorination at the temperature range of 600~1100°C. In the chlorinating process, carbide-derived carbon with different microstructure was obtained by controlling the reaction temperature. The structures of CDC were revealed with X-ray diffraction and Raman spectroscopy. The morphologies of CDC were analyzed by scanning electron microscope. From X-ray diffraction analysis, the CDC obtained from TiC in this experiment mainly consisted of amorphous carbon. Basing on scanning electron microscopy, carbide-derived carbon from TiC maintained the shape and size of TiC particles. Keywords: Carbide-derived carbons; chlorination; TiC
研究领域:
材料科学
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化学工程
✓ 已验证
DOI
Materials
·
2025
·Vol. 18
·期 4
·744
·
IF 3.2
Ya-Long Wang,Guo-Hua Zhang
Submicron-sized TiB2powders (300 nm–1 μm) were prepared by the reaction of TiC, B4C, and Ca assisted by molten CaCl2. The optimal reaction procedure (1200 °C and 25 wt.% CaCl2+ 25 wt.% Ca) was obtained by exploring the effects of the boronization reaction temperature and the addition of an amount of CaCl2. It was found that the introduction of CaCl2not only promoted the reaction but also effectively inhibited the volatilization of excess Ca. Furthermore, SEM images of the products showed that the morphology and particle size of TiB2were inherited from the carbothermal reduction product TiC, which was dominated by the “template/growth” mechanism. The process of the boronization reaction was that B atoms migrated from B4C and replaced the C atoms in the lattice of TiC.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CORROSION SCIENCE
·
2025
·
IF 8.5
Xinyu Li,Songmei Li,Juan Du,Jinyan Zhong,Mei Yu,Bin Li
The effect of TiC on corrosion process, particularly the passive and initial stages, is unclear. The passivation and initial corrosion of 2024-TiC AMCs are investigated in this report. It is found that a small amount of TiC improves corrosion resistance by reducing galvanic corrosion current density and forming a stable passive layer with low Cl⁻ adsorption and cation vacancy density, minimizing dissolution. However, excessive TiC causes uneven distribution, aggregation of Cl⁻, and passive film rupture, leading to anode aluminum dissolution and accelerated pitting corrosion propagation. These findings highlight the balance requirement for optimal TiC additive used in enhancing corrosion resistance.
研究领域:
材料科学
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腐蚀与防护
✓ 已验证
产品关联
DOI
高影响因子
CARBON
·
2024
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IF 10.5
Xiaoqi Mao,Longlong Dong,Yiya Zhang,Shuanglin Qin,Guodong Sun,Lianwen Wang,Yusheng Zhang
Synergistic improvement of strength and ductility is challenging in the engineering applications of titanium matrix composites (TMCs). Herein, we fabricated the TC4 composites reinforced with grain boundary micron-TiC and intragranular nano-Ti 2 Cu using spark plasma sintering (SPS) and hot rolling (HR) to achieve a good balance between strength and ductility. An interfacial reaction between Ti and C forms the grain boundary TiC, and the vast majority of intragranular nano-Ti 2 Cu precipitates to accommodate the severe lattice distortion caused by the solid solution of Cu in β-Ti phase. Benefiting from Ti 2 Cu nanoprecipitates and their ability to effectively suppress dislocation motion , precipitation strengthening, and dislocation strengthening are the main factors, in addition to grain refinement strengthening due to deformation processing , that contribute to the realization of the superior yield strength (YS) of 1360 MPa and ultimate tensile strength (UTS) of 1504 MPa in composites than TC4 matrix (YS = 986 MPa, UTS = 1160 MPa). Meanwhile, the interfacial strain-delocalization effect of TiC/Ti 2 Cu with Ti matrix, the shear-lag effect of TiC, and the sustained strain-hardening effect provided by TiC/Ti 2 Cu empower the composites with an outstanding ductility (fracture elongation of 8.4 %). This study highlights the untapped potential for improving the mechanical properties of Ti matrix composites.
研究领域:
材料科学
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力学工程
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2016
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IF 2.647
S. Miao,Z.M. Xie,T. Zhang,X.P. Wang,Q.F. Fang,C.S. Liu,G.N. Luo,X. Liu,Y.Y. Lian
In this paper, hot rolled W-0.5 wt% TiC alloys are fabricated via a combination of powder metallurgy and subsequent hot rolling with 65% thickness reduction. The as-rolled alloys show high strength of 789 MPa at 200 °C with a total elongation of 4.8%. We have explored the mechanical properties and thermal stability of W-0.5 wt% TiC alloys after annealing at various temperature. The corresponding results show that hardness and fracture strength slightly decrease with increased annealing temperature up to 1500 °C owing to recovery. While after annealing at 1600 °C for 1 h, the fracture strength of W-0.5 wt% TiC alloys decreases significantly due to full recrystallization and grain growth. The thermal conductivity increases with increased annealing temperature. The observed incubation time for recrystallization and the corresponding recrystallization thermal activation energy (~612 kJ/mol) for this rolled plates indicate a sufficient thermal stability at service temperature below 1200 °C. This good thermal stability is attributed to the nanosized TiC dispersion strengthened structures.
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 AMERICAN CERAMIC SOCIETY
·
2023
·
IF 3.9
Xuejiao Wang,Guangguang Pi,Jianye Yang,Kai Wu,Yanshuo Li,Wei Fang
Developing a highly active and stable electrode with a controllable size is greatly demanded to satisfy the large-scale application of electrochemical hydrogen production via water splitting. To overcome this challenge, a novel binder-free membrane electrode comprising Pd anchored on ZIF-62 glass supported on a porous TiC substrate has been developed to catalyze the hydrogen evolution reaction (HER) in both acidic and alkaline conditions. The optimal Pd@ZIF-62/TiC membrane electrode only requires a stable overpotential of ∼90 mV to reach a current density of 30 mA cm −2 within 20 h of operation. The outstanding HER performance of such electrode can be ascribed to its unique porous membrane structure, which accelerates the mass transfer kinetics of electrolyte ions and in situ generated hydrogen bubbles. As the Pd decorated molten ZIF-62 glass penetrated heavily into the TiC support pores, a very strong adhesion between Pd@ZIF-62 electrocatalytic layer and TiC substrate could be formed, which lowers the interfacial resistance between the catalyst and its substrate as well as promotes the charge transfer kinetics of HER electrode.
研究领域:
电化学
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材料科学
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能源材料
·
催化
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2020
·Vol. 104
·期 4
·1772-1784
·
IF 3.502
Jinxue Ding,Fengbo Chen,Jianxin Chen,Jin Liang,Jie Kong
Demand for high-performance electromagnetic (EM) wave absorbing materials with high-temperature resistance is always urgent for application in a harsh environment. In this contribution, two-dimensional material, Ti 3 C 2 T x MXene, was introduced into a hyperbranched polyborosilazane. After pyrolyzation, the as-prepared TiC/SiBCN ceramics present excellent EM wave absorption in X-band. The TiC nanograins appearing after annealing provide multilevel reflection and interface polarization. Dipole polarization formed at interface defects, in company with interfacial polarization, also makes a great contribution to enhanced EM wave absorption. The TiC/SiBCN nanocomplex prepared with 5 wt% Ti 3 C 2 T x MXene possesses a minimum reflection coefficient of −45.44 dB at 10.93 GHz and abroad bandwidth 8.4 and 12.4 GHz, almost covering the entire X-band. Tuning the thickness in the range of 2.35-2.54 mm, the effective absorption band can achieve the entire X-band. And the EM wave absorbing performance has been maintained to a large extent at 600°C with the minimum reflection coefficient of −26.12 dB at 12.13 GHz and the effective absorption bandwidth of 2 GHz. Last but not the least, TiC/SiBCN ceramics offer a good thermal stability in argon as well as in air atmosphere, making it possible to serve in high-temperature detrimental environments. This study is expected to provide a new perspective for the design of high-performance absorbing materials that are able to be used in harsh environments, especially in high temperatures.
研究领域:
材料科学
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电磁学
✓ 已验证
产品关联
DOI
高影响因子
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
·
2021
·
IF 5.234
X.F. Xie,K. Jing,Z.M. Xie,R. Liu,J.F. Yang,Q.F. Fang,C.S. Liu,Xuebang Wu
Bulk pure tungsten (W), W-0.5 wt%TiC (WTC05) and W-1 wt%Y 2 O 3 (WY10) materials were prepared by a developed two-step hot-pressing (HP) sintering method. Metallographic observation, SEM and TEM characterization were conducted to obtain the information of material microstructures . The results indicate that a small amount of TiC or Y 2 O 3 addition could effectively improve the sinterability and reduce the grain size of the HP sintered WTC05 and WY10 alloys. The relative density of WTC05 and WY10 reaches as high as 99%, and the average grain size of WTC05 and WY10 are 2.61 μm and 3.57 μm, respectively, which are several times smaller than that of pure W. Among the three W materials, pure W has the poor tensile performance with insufficient strength and ductility, WTC05 has the highest tensile strength with the ultimate tensile strength of 1082 MPa at 300 °C, and WY10 has the best ductility and moderate strength. The relationship between the microstructures and the tensile properties has been investigated, and suggestions on microstructure parameters have been proposed for preparing high performance W-based materials.
研究领域:
材料科学
·
金属学
✓ 已验证
DOI
高影响因子
Inorganic and Nano-Metal Chemistry
·
2020
·
IF 0.827
Xiaochun Xie,Guosong Ou,Hongquan Men,Min Jiang,Wenxin Lin,Jianjun Chen
Titanium carbide (TiC) nanowires are synthesized by carbothermal reduction reaction at 1473–1673 K in argon atmosphere. The structure and morphology of TiC nanowires are characterized by X-ray diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The chemical reaction thermodynamics and the growth mechanism of TiC nanowires are investigated based on the Ti-C-O-Cl system. It involves the formation of gaseous TiClx and CO crucial intermediates, and the further carbon reduction of TiClx to TiC. Based on the thermodynamic analysis, the two-stage growth mechanism of TiC nanowires is discussed. The work could help to analyze the thermochemistry of the carbothermal reduction reaction in the Ti-C-O-Cl system, which is beneficial to optimize the temperature and the input precursors for controlling TiC nanowires growth.
研究领域:
材料科学
·
热力学
✓ 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）