Effect of octylphenyl ether group nonionic surfactant on the electrodepositon of the hexagonal boron nitride reinforced Ni-B matrix composite coatings

2020 ◽  
Vol 381 ◽  
pp. 125131 ◽  
Author(s):  
Ali Tozar ◽  
İsmail H. Karahan
Keyword(s):  
Boron Nitride ◽  
Nonionic Surfactant ◽  
Matrix Composite ◽  
Hexagonal Boron Nitride ◽  
Composite Coatings ◽  
Ether Group

Polyetheretherketone, hexagonal boron nitride, and tungsten carbide cobalt chromium composite coatings: Mechanical and tribological properties

2021 ◽  
Vol 138 (21) ◽  
pp. 50504
Author(s):  
Janice L. Lebga‐Nebane ◽  
Malavarayan Sankarasubramanian ◽  
Gregory Chojecki ◽  
Bo Ning ◽  
Philip A. Yuya ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Tungsten Carbide ◽  
Tribological Properties ◽  
Hexagonal Boron Nitride ◽  
Composite Coatings ◽  
Cobalt Chromium ◽  
Mechanical And Tribological Properties ◽  
And Tungsten

Review on the properties of hexagonal boron nitride matrix composite ceramics

2016 ◽  
Vol 36 (15) ◽  
pp. 3725-3737 ◽  
Author(s):  
Xiaoming Duan ◽  
Zhihua Yang ◽  
Lei Chen ◽  
Zhuo Tian ◽  
Delong Cai ◽  
...  
Keyword(s):  
Boron Nitride ◽  
Matrix Composite ◽  
Hexagonal Boron Nitride ◽  
Composite Ceramics

Marcus-Hush Theory Revealed by Electron Tunneling Through Hexagonal Boron Nitride

2019 ◽  
Author(s):  
Matěj Velický ◽  
Sheng Hu ◽  
Colin R. Woods ◽  
Peter S. Toth ◽  
Viktor Zólyomi ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Boron Nitride ◽  
Electron Tunneling ◽  
Hexagonal Boron Nitride ◽  
Large Body ◽  
Liquid Solution ◽  
Limiting Current ◽  
Electron Transfer Rate Constant ◽  
Electrochemical Parameters ◽  
Voltammetric Measurements

Marcus-Hush theory of electron transfer is one of the pillars of modern electrochemistry with a large body of supporting experimental evidence presented to date. However, some predictions, such as the electrochemical behavior at microdisk electrodes, remain unverified. Herein, we present a study of electron tunneling across a hexagonal boron nitride barrier between a graphite electrode and redox levels in a liquid solution. This was achieved by the fabrication of microdisk electrodes with a typical diameter of 5 µm. Analysis of voltammetric measurements, using two common redox mediators, yielded several electrochemical parameters, including the electron transfer rate constant, limiting current, and transfer coefficient. They show a significant departure from the Butler-Volmer behavior in a clear manifestation of the Marcus-Hush theory of electron transfer. In addition, our system provides a novel experimental platform, which could be applied to address a number of scientific problems such as identification of reaction mechanisms, surface modification, or long-range electron transfer.

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