Friction and wear mechanisms of castor oil with addition of hexagonal boron nitride nanoparticles

2018 ◽  
Vol 124 ◽  
pp. 10-22 ◽  
Author(s):  
Yongnan Wang ◽  
Zhenping Wan ◽  
Longsheng Lu ◽  
Zhihui Zhang ◽  
Yong Tang
Keyword(s):  
Boron Nitride ◽  
Wear Mechanisms ◽  
Castor Oil ◽  
Friction And Wear ◽  
Hexagonal Boron Nitride ◽  
Friction And Wear Mechanisms ◽  
Boron Nitride Nanoparticles

scholarly journals Bottom‐Up Synthesis of Hexagonal Boron Nitride Nanoparticles with Intensity‐Stabilized Quantum Emitters

Small ◽  
2021 ◽  
pp. 2008062
Author(s):  
Yongliang Chen ◽  
Xiaoxue Xu ◽  
Chi Li ◽  
Avi Bendavid ◽  
Mika T. Westerhausen ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Bottom Up ◽  
Boron Nitride Nanoparticles ◽  
Quantum Emitters

Hexagonal boron nitride nanoparticles trigger oxidative stress by modulating thiol/disulfide homeostasis

2021 ◽  
pp. 096032712110028
Author(s):  
F Kar ◽  
İ Söğüt ◽  
C Hacıoğlu ◽  
Y Göncü ◽  
H Şenturk ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Boron Nitride ◽  
Hexagonal Boron Nitride ◽  
Chemical Properties ◽  
Heart Tissue ◽  
Albino Rats ◽  
Dependent Manner ◽  
Tissue Samples ◽  
Boron Nitride Nanoparticles

Background: Hexagonal boron nitride nanoparticles (hBN NPs) are encouraging nanomaterials with unique chemical properties in medicine and biomedical fields. Until now, the optimal hBN NP’s dosage and biochemical mechanism that can be used for in vivo systems has not been fully revealed. The main aim of this article is to reveal characteristics, serum and tissue interactions and any acute cytotoxic effect of different dose of hBN NPs for the first time. Methods: hBN NPs at concentrations varying between 50–3200 µg/kg was administered by intravenous injection to Wistar albino rats (n = 80) divided into seven dosage and control groups. Blood and tissue samples were taken after 24 hours. Results: Our findings suggested that higher doses hBN NPs caused oxidative stress on the serum of rats dose-dependently. However, hBN NPs did not affect thiol/disulfide homeostasis on kidney, liver, spleen, pancreas and heart tissue of rats. Furthermore, hBN NPs increased serum disulfide formation by disrupting the thiol/disulfide balance in rats. Also, LOOH and MPO levels increased at high doses, while CAT levels decreased statistically. Conclusion: The results revealed that hBN NPs induce oxidative stress in a dose-dependent manner by modulating thiol/disulfide homeostasis in rats at higher concentrations

Effect of transfer layers on friction and wear mechanisms in strip drawing tests of commercially coated forming tools

Wear ◽  
2021 ◽  
pp. 203733
Author(s):  
A.F. Tavares ◽  
A.P.O. Lopes ◽  
E.A. Mesquita ◽  
D.T. Almeida ◽  
J.H.C. Souza ◽  
...  
Keyword(s):  
Wear Mechanisms ◽  
Friction And Wear ◽  
Friction And Wear Mechanisms ◽  
Strip Drawing ◽  
Forming Tools

Friction and wear mechanisms in MoS2/Sb2O3/Au nanocomposite coatings

2010 ◽  
Vol 58 (12) ◽  
pp. 4100-4109 ◽  
Author(s):  
T.W. Scharf ◽  
P.G. Kotula ◽  
S.V. Prasad
Keyword(s):  
Wear Mechanisms ◽  
Friction And Wear ◽  
Nanocomposite Coatings ◽  
Friction And Wear Mechanisms

Tribological and Corrosion Behavior of HVOF Sprayed Cr3C2-NiCr with Nickel Cladded Graphite and Hexagonal Boron Nitride

2021 ◽  
Author(s):  
M. Oechsner ◽  
T. Engler ◽  
H. Scheerer ◽  
Y. Joung ◽  
K. Bobzin ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Friction And Wear ◽  
Room Temperature ◽  
Solid Lubricant ◽  
Hexagonal Boron Nitride ◽  
Solid Lubricants ◽  
Wear Behaviour ◽  
Wear Volume ◽  
Coating Microstructure ◽  
Sprayed Coatings

Abstract High-velocity oxyfuel (HVOF) sprayed coatings of Cr3C2-NiCr containing solid lubricants such as nickel cladded graphite and hexagonal boron nitride were successfully developed and characterised with the aim of optimizing their friction and wear behaviour. HVOF technology was used for the integration of solid lubricants to achieve strong cohesion between particles while minimizing thermal decomposition. Coating microstructure and composition were measured and correlated to the results of tribological and corrosion tests. The integration of the solid lubricant greatly reduced friction and wear volume at room temperature, but the lubricating effect was highly dependent on atmosphere and temperature. Cr3C2-NiCr with hBN, however, tends to exhibit more stable wear resistance over a wider temperature range and can be used at temperatures beyond 450 °C.

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