Effect of hexagonal boron nitride (h-BN) inclusion on thermal characteristics of disc brake friction composites

Kosbe, Pradnya; Patil, Pradeep A.; Manickam, Muthukumar; Ramamurthy, Gurunathan

doi:10.1016/j.diamond.2020.107895

Cited by 11 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Results showed an enhanced thermal conductivity from 0.86 W/mK to 1.40 W/mK with an increasing h-BN percentage. Furthermore, the composite with the most h-BN content showed the lowest friction fluctuations and a high coefficient of friction [99].…”

Section: Inorganic Fillermentioning

confidence: 96%

Ecological Transition in the Field of Brake Pad Manufacturing: An Overview of the Potential Green Constituents

Confiengo

Faga

2022

Sustainability

View full text Add to dashboard Cite

Nowadays, the drive for green products has undergone a rapid increase following the global ecoawareness and the severe regulations aimed at preventing the environment from further damage. The use of ecosafe constituents in materials for harsh applications, such as brake pad systems, can be a possible solution for reducing health hazards arising from particle release during braking. Based on this, the present study provides a bibliographic review of green alternative constituents for friction material formulation, focusing the attention on their influence on the tribological properties of the final composites. The traditional materials still used in commercial brake pads are shortly described, with the aim to provide an overview of the current situation. In the final part of the review, following the trend of circular economy, works dealing with the use of waste as an ingredient of friction materials are also reported. The whole literature screening points out that much work is still required to obtain completely green friction materials. Indeed, few works dealing with the phenolic resin replacement, proposing inorganic ecosafe materials such as geopolymers, are present. On the contrary, the use of natural fibers is widely investigated: palm kernel, flax, agave and aloe can be identified as promising constituents based on the literature results and the generated patents.

show abstract

Section: Inorganic Fillermentioning

confidence: 96%

Ecological Transition in the Field of Brake Pad Manufacturing: An Overview of the Potential Green Constituents

Confiengo

Faga

2022

Sustainability

View full text Add to dashboard Cite

show abstract

“…The wear properties of the prepared samples were evaluated using a dry wear test through pin-on-disc according to ASTM (G77-98). A 12mm diameter specimen was loaded perpendicularly onto a steel disc, and subjected to four different loads (5,10,15, and 20 N) while the sliding speed and sliding distance were kept at 1.5 m/s and 450 m, respectively. Furthermore, the rotational speed was fixed at 150 rpm.…”

Section: Characterizations Of Al-cnts/h-bn Hybrid Nano Compositesmentioning

confidence: 99%

“…This facilitates particle rearrangement and efficient packing, enabling enhanced compaction and reducing the presence of voids or porosity. Additionally, h-BN's lubricating properties impede grain growth and agglomeration, contributing to preserving particle boundaries [10,39,43,[48][49][50]. Consequently, incorporating h-BN nanoparticles promotes optimal particle packing, solid-state diffusion, and inter-particle bonding, culminating in significantly improved densification.…”

Section: Density Of the Al-cnts/h-bn Hybrid Compositesmentioning

confidence: 99%

“…The B-N bond exhibits partial ionic character, resulting in cleavage faces with both positive and negative charges, enhancing surface energy and increasing interface friction. The localization of electrons in the pz nonhybridized orbital, attracted by highly electronegative nitrogen atoms, contributes to the distinct features of h-BN [10,34,49].The interlayer distance of h-BN is measured at 3.33 Å [34,40,49].resulting in a compact crystalline structure with strong interlayer bonding. This enhanced bonding, particularly between layers, can lead to varied lubrication effects on Cu-based composites.…”

Section: Tribological Of the Al-cnts/h-bn Hybrid Nanocompositesmentioning

confidence: 99%

“…HMMNCs exhibit enhanced thermal conductivity and stability, making them suitable for applications that involve high-temperature environments, such as aerospace and automotive components. By reducing the weight of the material while maintaining high strength, HMMNCs are beneficial in applications where weight savings are crucial, such as in the aerospace and automotive industries [8][9][10]. HMMNCs can be engineered to exhibit specific electrical and magnetic properties, making them suitable for applications like electromagnetic shielding or electronic packaging [11].Certain HMMNCs can offer superior corrosion resistance, which is particularly important in applications where materials are exposed to harsh environments, such as offshore structures [1,12].The addition of nanoparticles enhances the tribological (friction and wear) properties of HMMNCs, making them suitable for applications like bearings and other mechanical components [13].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Enhancement of microstructural, mechanical and tribological properties of hybrid Al- CNTs through electroless deposition of innovative h-BNs contents coated Ag and Ni for purpose of ball bearing

Barakat,

Samir,

Elkady

et al. 2024

Preprint

View full text Add to dashboard Cite

Ball bearings face numerous challenges under harsh operating conditions of elevated pressure between the balls and other contacting parts of the bearing like drop in tribological properties. To address these challenges, a new attempt was successfully made for the first time in this paper through an experimental investigation by the impact of incorporating hexagonal boron nitride (h-BN) into Aluminum-Carbon nanotubes (Al-0.6 wt. % CNTs) nanocomposites by an innovative coated with silver (Ag) and nickel (Ni) using a novel electroless chemical deposition technique, to improve the wettability and scattering between matrix and reinforcement. Various h-BN ratios (2, 4, 6, 8 and 10 wt. %) are incorporated and consolidated through high-energy ball milling and hot compaction techniques. The produced samples were tested and analyzed physically, mechanically, tribologically, and microstructurally. X-ray diffraction (XRD) and scanning electron microscope (SEM) analyses were used to explore the new morphologies and structures. The study delves into density, hardness, and wear resistance. The optimal h-BN content is determined to be 8 wt.%, enhancing wettability and dispersion within the Al-CNTs matrix. Thus, the properties of hardness, compressive strength, wear rate, and COF at 8 wt.% of h-BN content were enhanced by 105%, 60%, 74.5%, and 78.5%, respectively, compared to pure Al. This is due to the uniform scattering of h-BN nanoparticles across the entire surface, despite a significant decrease in relative density. In conclusion, the combination of high-energy ball milling, electroless deposition, and hot compaction techniques proves to be effective in producing Al-CNTs/h-BN nanocomposites coated with Ag and Ni nanoparticles.

show abstract

Thermal stability and thermal conductivity studies of hexagonal boron nitride

Kosbe

2024

Hexagonal Boron Nitride

View full text Add to dashboard Cite

Effect of hexagonal boron nitride (h-BN) inclusion on thermal characteristics of disc brake friction composites

Cited by 11 publications

References 23 publications

Ecological Transition in the Field of Brake Pad Manufacturing: An Overview of the Potential Green Constituents

Ecological Transition in the Field of Brake Pad Manufacturing: An Overview of the Potential Green Constituents

Enhancement of microstructural, mechanical and tribological properties of hybrid Al- CNTs through electroless deposition of innovative h-BNs contents coated Ag and Ni for purpose of ball bearing

Thermal stability and thermal conductivity studies of hexagonal boron nitride

Contact Info

Product

Resources

About