Scratch behavior of boron nitride nanotube/boron nitride nanoplatelet hybrid reinforced ZrB2-SiC composites

Chen, Y.; Zhao, Dong; Qi, Fei; Liu, W.W.

doi:10.1016/j.ceramint.2017.11.100

Cited by 10 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The binding energies of N 1s of lubricated by IL-EG aq were located at 399.0, 398.2, and 396.7 eV, which were ascribed to nitrides and organic nitrogen compounds. The peaks of N 1s lubricated by HO-BNNs/IL-EG aq appeared at 399.7 and 399.0 eV, and they represented residual HO-BNNs and nitrides [44], respectively, which confirmed the self-repairing effect of HO-BNNs. The peak of the P 2p spectrum was 133.0 eV, corresponding to organic phosphates.…”

Section: Characterization Of Wear Scars and Debrismentioning

confidence: 64%

Macroscale superlubricity achieved via hydroxylated hexagonal boron nitride nanosheets with ionic liquid at steel/steel interface

et al. 2021

View full text Add to dashboard Cite

Macroscale superlubricity is a prospective strategy in modern tribology to dramatically reduce friction and wear of mechanical equipment; however, it is mainly studied for point-to-surface contact or special friction pairs in experiments. In this study, a robust macroscale superlubricity for point-to-point contact on a steel interface was achieved for the first time by using hydroxylated modified boron nitride nanosheets with proton-type ionic liquids (ILs) as additives in ethylene glycol aqueous (EGaq). The detailed superlubricity process and mechanism were revealed by theoretical calculations and segmented experiments. The results indicate that hydration originating from hydrated ions can significantly reduce the shear stress of EGaq, which plays an essential role in achieving superlubricity. Moreover, the IL induces a tribochemical reaction to form a friction-protective film. Hydroxylated boron nitride nanosheets (HO-BNNs) function as a polishing and self-repairing agent to disperse the contact stress between friction pairs. Superlubricity involves the change in lubrication state from boundary lubrication to mixed lubrication. This finding can remarkably extend the application of superlubricity for point-to-point contact on steel surfaces for engineering applications.

show abstract

Section: Characterization Of Wear Scars and Debrismentioning

confidence: 64%

Macroscale superlubricity achieved via hydroxylated hexagonal boron nitride nanosheets with ionic liquid at steel/steel interface

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Chen et al [32] investigated the scratch behavior of ZrB2-SiC ceramics densified by spark plasma sintering and reinforced with hybrid BN nanotubes and BN nanoplatelets. The hybrid BN reinforced composite exhibited commonly ductile deformation.…”

Section: Introductionmentioning

confidence: 99%

Pressureless sinterability study of ZrB2–SiC composites containing hexagonal BN and phenolic resin additives

2021

View full text Add to dashboard Cite

This research is dedicated to the role of different amounts of hexagonal BN (hBN: 0, 1.5, 3, and 4.5 wt%) on the pressureless sinterability of ZrB2–25 vol% SiC ceramics. Phenolic resin (5 wt%) with a carbon yield of ~40 % was incorporated as a binder to the powder mixtures and after initial cold pressing, the final sintering process was performed at 1900 °C for 100 min in a vacuum furnace. The as-sintered specimens were characterized by X-ray diffractometry, field emission scanning electron microscopy, and energy-dispersive X-ray spectroscopy. The results disclosed that the incorporation of 1.5 wt% hBN could increase the relative density to ~92%, while the sample with zero hBN content just reached ~81% of full densification. Appropriate hBN content not only facilitated the particle rearrangement during the cold pressing, but also removed the harmful oxide impurities during the final sintering. Nevertheless, the addition of higher amounts of hBN remarkably lessened the densification because of more delamination of the non-reacted hBN flakes and release and entrapment of more gaseous by-products induced by the reacted hBN phases.

show abstract

“…Combining boron nitride nanotubes and nanosheets to construct a nanocomposite structure is expected to show multi‐dimensional synergistic toughening and strengthening effects and further improve the mechanical properties of structural ceramics 18,19 . Unlike the extensive research available on the synthesis of boron nitride nanotubes and nanosheets, there are only a few reports on the synthesis and growth mechanism of multi‐dimensional boron nitride nanocomposites 20,21 …”

Section: Introductionmentioning

confidence: 99%

“…effects and further improve the mechanical properties of structural ceramics. 18,19 Unlike the extensive research available on the synthesis of boron nitride nanotubes and nanosheets, there are only a few reports on the synthesis and growth mechanism of multi-dimensional boron nitride nanocomposites. 20,21 In our previous research, we proposed the synthesis of substrate-free and catalyst-free BNNSs by a surface-diffusion reaction between ammonium borate hydroxide hydrate and ammonia.…”

mentioning

confidence: 99%

Large‐scale synthesis and growth mechanism of boron nitride nanocomposite assembled by nanosheets and nanotubes

Wang

Ping

et al. 2020

J Am Ceram Soc

View full text Add to dashboard Cite

Boron nitride nanocomposites assembled by nanosheets and nanotubes can exert multi‐dimensional synergistic toughening and strengthening effects. This material is expected to be a high‐efficiency reinforcement additive in advanced structural ceramics. In this study, we designed a universal method for synthesizing gram‐scale boron nitride nanocomposites by annealing the precursor containing catalyst in chemical vapor deposition equipment under flowing ammonia, and a combined growth mechanism of surface‐diffusion and solid‐liquid‐solid is proposed. The boron nitride nanosheets were initially formed by a surface‐diffusion reaction between boron trioxide and ammonia at 1300°C. At elevated temperatures (1400°C‐1500°C), the boron nitride nanotubes grew in‐situ from the nanosheets in the presence of catalysts through a solid‐liquid‐solid mechanism, forming the desired boron nitride nanocomposite.

show abstract

Scratch behavior of boron nitride nanotube/boron nitride nanoplatelet hybrid reinforced ZrB2-SiC composites

Cited by 10 publications

References 24 publications

Macroscale superlubricity achieved via hydroxylated hexagonal boron nitride nanosheets with ionic liquid at steel/steel interface

Macroscale superlubricity achieved via hydroxylated hexagonal boron nitride nanosheets with ionic liquid at steel/steel interface

Pressureless sinterability study of ZrB2–SiC composites containing hexagonal BN and phenolic resin additives

Large‐scale synthesis and growth mechanism of boron nitride nanocomposite assembled by nanosheets and nanotubes

Contact Info

Product

Resources

About