Cubic boron nitride-containing ceramic matrix composites for cutting tools

Zhang, Jianfeng; Tu, Rong; Goto, Takashi

doi:10.1016/b978-0-08-102166-8.00026-8

Cited by 3 publications

(7 citation statements)

References 56 publications

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“…The results indicate that Si 3 N 4 does not accelerate the transformation and thus confirm the data reported by Zhang [ 2 ]. However, in composites containing sintering additives used to form the liquid phase required for densification, the stability is much lower.…”

Section: Resultssupporting

confidence: 91%

“…These findings are in agreement with the data published by Zhang [ 2 , 11 ]. c-BN shows a high stability in mixtures of c-BN and nonreacting components such as TiN and Si 3 N 4 .…”

Section: Discussionsupporting

confidence: 94%

“…The stability of c-BN in contact with an oxide or oxynitride liquid is much lower than the literature data suggest [ 2 , 11 ]. The results of the heat treatment of G1-BN and G3-BN showed that at temperatures as low as 1200 °C, the conversion of c-BN was still observed, indicating that at least at these temperatures > 1200 °C, the h-BN is the thermodynamically stable phase.…”

Section: Discussionmentioning

confidence: 76%

“…There is an ongoing need for materials with high wear resistance for bearings, seals, nozzles, and other wear parts in machines as well as for cutting tools and drawing dies in the metalworking industry [ 1 , 2 , 3 ]. The last few years have seen the development of diamond-based ceramic materials that can be produced without the application of high pressures [ 3 , 4 ].…”

Section: Introductionmentioning

confidence: 99%

“…Zhang et al [ 2 ] published results regarding the stability of c-BN in different matrix materials. WC/Co.…”

Section: Introductionmentioning

confidence: 99%

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On the Stability of c-BN-Reinforcing Particles in Ceramic Matrix Materials

2018

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Cubic boron nitride (c-BN) composites produced at high pressures and temperatures are widely used as cutting tool materials. The advent of new, effective pressure-assisted densification methods, such as spark plasma sintering (SPS), has stimulated attempts to produce these composites at low pressures. Under low-pressure conditions, however, transformation of c-BN to the soft hexagonal BN (h-BN) phase can occur, with a strong deterioration in hardness and wear. In the present work, the influence of secondary phases (B2O3, Si3N4, and oxide glasses) on the transformation of c-BN was studied in the temperature range between 1100 °C and 1575 °C. The different heat treated c-BN particles and c-BN composites were analyzed by SEM, X-ray diffraction, and Raman spectroscopy. The transformation mechanism was found to be kinetically controlled solution–diffusion–precipitation. Given a sufficiently low liquid phase viscosity, the transformation could be observed at temperatures as low as 1200 °C for the c-BN–glass composites. In contrast, no transformation was found at temperatures up to 1575 °C when no liquid oxide phase is present in the composite. The results were compared with previous studies concerning the c-BN stability and the c-BN phase diagram.

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Section: Resultssupporting

confidence: 91%

“…These findings are in agreement with the data published by Zhang [ 2 , 11 ]. c-BN shows a high stability in mixtures of c-BN and nonreacting components such as TiN and Si 3 N 4 .…”

Section: Discussionsupporting

confidence: 94%

Section: Discussionmentioning

confidence: 76%

Section: Introductionmentioning

confidence: 99%

“…Zhang et al [ 2 ] published results regarding the stability of c-BN in different matrix materials. WC/Co.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

On the Stability of c-BN-Reinforcing Particles in Ceramic Matrix Materials

2018

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Transformation of boron nitride from cubic to hexagonal under 1-atm helium

Cahill

Frane

Sio

et al. 2020

Diamond and Related Materials

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Micro/Nano Indentation Testing of Spark Plasma Sintered Al2O3 + ZrO2 + cBN Ceramics

et al. 2021

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Al2O3 + 30 vol% ZrO2 matrix composites with 20 and 30 vol% cBN have been prepared with the optimized processing route, using spark plasma sintering (SPS) at temperatures of 1400 °C and 1250 °C. The influence of cBN addition on the microstructure characteristics, micro/nanohardness, elastic modulus, and crack-extension resistance of the composites and their constitutions have been investigated using scanning electron microscopy (SEM), statistical analyses of the individual grain size and micro/nanoindentation methods. The matrix consists of alumina and zirconia grains with grain sizes/diameter of approximately 220 and 160 nm with approximately 1.9 μm cBN grains in the Al2O3 + ZrO2 + cBN composites. The microhardness is slightly increasing with cBN addition from 16.2 to 17.1 GPa and the crack-extension resistance from 3.72 to 4.29 MPa.m1/2. The toughening mechanisms are in the form of crack deflection, crack branching, and crack bridging. The nanohardness and indentation modulus of the matrix are approximately 30 and 420 GPa, and the cBN grains 70 and 777 GPa, respectively.

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Cubic boron nitride-containing ceramic matrix composites for cutting tools

Cited by 3 publications

References 56 publications

On the Stability of c-BN-Reinforcing Particles in Ceramic Matrix Materials

On the Stability of c-BN-Reinforcing Particles in Ceramic Matrix Materials

Transformation of boron nitride from cubic to hexagonal under 1-atm helium

Micro/Nano Indentation Testing of Spark Plasma Sintered Al2O3 + ZrO2 + cBN Ceramics

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