Preparation, mechanical properties and microstructure of TiB2 based ceramic cutting tool material toughened by TiC whisker

Liu, Bingqiang; Wei, Wenqing; Gan, Yiqiang; Duan, Chunxu; Cui, Haichao

doi:10.1016/j.ijrmhm.2020.105372

Cited by 28 publications

(6 citation statements)

References 30 publications

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“…8. Karthiselva et al 44) and Liu et al 45) attempted to add reinforcing phases, such as carbon nanotubes and titanium carbide (TiC w ), with a specific aspect ratio into TiB 2 . However, with the progress of sintering, the morphology of the second phase added directly changes.…”

Section: Resultsmentioning

confidence: 99%

“…Titanium boride (TiB 2 ) is an advanced structural and functional material with high hardness (approximately [25][26][27][28][29][30][31][32][33][34][35] GPa at room temperature), a high melting point (>3000 °C), low density (4.52 g/cm 3 ), good electrical conductivity (electrical resistivity ³13 © 10 ¹8 ³ m), wear resistance (coefficient of friction >0. 45), and chemical inertness. 1) It is widely used in cutting tools, wear-resistant parts, high-temperature coatings, flexible positive temperature coefficient materials, and armor protection.…”

Section: Introductionmentioning

confidence: 99%

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TiB<sub>2</sub> composites fabricated by spark plasma sintering at low temperature

Liu,

Zhang,

Jia

et al. 2024

J. Ceram. Soc. Japan

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TiB 2 composites with 30 wt.% TiC and 10 wt.% Ti, TiB 2 composites with only 30 wt.% TiC, and bulk TiB 2 without any additives were fabricated using the spark plasma sintering (SPS) technique at a temperature of 1500 °C, respectively. In addition, bulk TiB 2 ceramic was also fabricated at 1800 °C. The differences in densification and mechanical properties between TiB 2 composites and bulk TiB 2 ceramics were systematically investigated. The addition of TiC and Ti reduced the densification temperature from above 1800 to 1500 °C. Compared with the bulk TiB 2 ceramic (with a density of 4.38 g/cm 3 ) sintered at 1800 °C, the TiB 2 composites exhibited enhanced sinterability, decreased grain size, increased strength and toughness, and slightly lower hardness.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

TiB<sub>2</sub> composites fabricated by spark plasma sintering at low temperature

Liu,

Zhang,

Jia

et al. 2024

J. Ceram. Soc. Japan

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“…Silicon nitride (Si 3 N 4 ) ceramics as engineering structural ceramics can be applied in cutting tool materials owing to their superior overall performances [ 1 , 2 ], including excellent mechanical properties [ 3 , 4 , 5 ], low thermal expansion, self-lubrication, high temperature resistance [ 6 ], and chemical stability [ 7 ], etc. Compared with other ceramic cutting tools [ 8 , 9 ], Si 3 N 4 ceramics as cutting tool materials are more suitable for applications in the field of metal cutting [ 10 , 11 ], which will reduce manufacturing costs and enhance machining efficiency in actual production. In particular, Si 3 N 4 ceramic cutting tools [ 12 ] with high hardness can be also applied in machining difficult-to-machine materials [ 13 ] such as cemented carbide, nickel-base superalloy [ 14 ], grey cast iron, etc.…”

Section: Introductionmentioning

confidence: 99%

“…Although many studies have focused on the performance of Si 3 N 4 ceramic materials, there are still some shortcomings. Currently, to enhance the strength and toughness of Si 3 N 4 ceramics, various approaches [ 9 , 20 ] of reinforcement have been carried out by employing particles reinforcement [ 21 ], whiskers reinforcement [ 22 ], self reinforcement [ 23 ], gradient structure and synergistic reinforcement [ 24 ] etc. Self-reinforced Si 3 N 4 ceramics are common and achieved via tailoring the α/β-Si 3 N 4 phases ratio under sintering conditions of high temperature and long holding time [ 1 , 10 , 23 ].…”

Section: Introductionmentioning

confidence: 99%

Synergistic Reinforcement of Si3N4 Based Ceramics Fabricated via Multiphase Strengthening under Low Temperature and Short Holding Time

Huang,

Lv,

Dong

et al. 2023

Materials

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Si3N4 ceramic as a tool material shows promising application prospects in high-speed machining fields; however, the required high mechanical properties and low-cost preparation of Si3N4 ceramic tool materials restrict its application. Herein, synergistic reinforced Si3N4 ceramic tool materials were fabricated by adding β-Si3N4 seeds, inexpensive Si3N4 whiskers and TiC particles into coarse commercial Si3N4 powder (D50 = 1.5 μm), then sintering by hot-pressing with low temperature and short holding time (1600 °C—30 min—40 MPa). The phase assemblage, microstructure evolution and toughening mechanisms were investigated. The results reveal that the sintered Si3N4 ceramics with synergistic reinforcement, compared to those with individual reinforcement, present an enhancement in relative density (from 94.92% to 97.15%), flexural strength (from 467.56 ± 36.48 to 809.10 ± 45.59 MPa), and fracture toughness (from 8.38 ± 0.19 to 10.67 ± 0.16 MPa·m1/2), as well as a fine Vickers hardness of 16.86 ± 0.19 GPa. Additionally, the various reinforcement modes of Si3N4 ceramics including intergranular fracture, crack deflection, crack bridging and whiskers extraction were observed in crack propagation, arising from the contributions of the added β-Si3N4 seeds, Si3N4 whiskers and TiC particles. This work is expected to serve as a reference for the production of ceramic cutting tools.

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“…Whisker toughening is currently an ideal toughening method for ceramic materials [ 14 , 15 ]. It has a good toughening effect through the toughening mechanisms of whisker pulling [ 16 ], crack deflection [ 17 ], and whisker bridging [ 18 ]. Lao et al [ 19 ] strengthened glass ceramics by forming SiC whiskers in situ, which significantly reduced the thermal expansion coefficient of glass ceramics and improved their mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Addition of Nano CaF2@SiO2 and SiC Whiskers in Ceramic Tools for Wear Reduction and Improved Machinability

et al. 2022

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The addition of CaF2@SiO2 and SiC whiskers to ceramic tools can improve their flexural strength and fracture toughness, reduce surface damage, and improve their cutting performance. The cutting experiments showed that under the same cutting conditions, the surface roughness of the workpiece processed with the Al2O3/TiC/SiC/CaF2@SiO2 (ATSC10) tool was significantly lower than that of the workpiece processed with the Al2O3/TiC/ SiC (ATS) tool. Additionally, the main cutting force and cutting temperature when cutting with the ATSC10 tool were lower by 30 and 31.7%, respectively. These results were attributed to the precipitation of CaF2 from the nanocoated particles during cutting and the formation of a uniform and continuous lubricating film on the surface of the tool. The wear on the front surface of the ATS tool was mainly adhesive, and that on the back tool surface was mainly abrasive. For ATSC10, the main forms of wear on the tool front surface were adhesive and abrasive, whereas the main form of wear on the tool back surface was abrasive with slight adhesive wear. The addition of nano-coated particles and whiskers improved the mechanical properties of the cutting tool while maintaining good cutting performance.

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Preparation, mechanical properties and microstructure of TiB2 based ceramic cutting tool material toughened by TiC whisker

Cited by 28 publications

References 30 publications

TiB<sub>2</sub> composites fabricated by spark plasma sintering at low temperature

TiB<sub>2</sub> composites fabricated by spark plasma sintering at low temperature

Synergistic Reinforcement of Si3N4 Based Ceramics Fabricated via Multiphase Strengthening under Low Temperature and Short Holding Time

Addition of Nano CaF2@SiO2 and SiC Whiskers in Ceramic Tools for Wear Reduction and Improved Machinability

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