scholarly journals Warm carbon coat reduces friction

Nature ◽  
2014 ◽  
Vol 505 (7483) ◽  
pp. 264-264
Keyword(s):  
Carbon Coat

scholarly journals MOF-derived Bi2O3@C microrods as negative electrodes for advanced asymmetric supercapacitors

RSC Advances ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 14107-14112
Author(s):  
Xianbo Yu ◽  
Jie Sun ◽  
Wenna Zhao ◽  
Shihang Zhao ◽  
Hongmei Chen ◽  
...  
Keyword(s):  
Specific Capacity ◽  
Cycling Stability ◽  
Asymmetric Supercapacitors ◽  
Negative Electrodes ◽  
Excellent Cycling Stability ◽  
Carbon Coat ◽  
Electrodes For Supercapacitors

Bi2O3 microrods with a carbon coat (Bi2O3@C) exhibit ultrahigh specific capacity (1378 C g−1 at 0.5 A g−1) and excellent cycling stability (93% retention at 4000 cycles) as negative electrodes for supercapacitors.

A Mathematical Model for Determining Carbon Coating Thickness and Its Application in Electron Probe Microanalysis

2016 ◽  
Vol 22 (6) ◽  
pp. 1374-1380 ◽  
Author(s):  
Ruo-Xi Zhang ◽  
Shui-Yuan Yang
Keyword(s):  
Mathematical Model ◽  
Film Thickness ◽  
Coating Thickness ◽  
Electron Probe Microanalysis ◽  
Electron Probe ◽  
Carbon Coating ◽  
Carbon Film ◽  
X Rays ◽  
Coating Chamber ◽  
Carbon Coat

AbstractIn electron probe microanalysis where materials are coated with a thin conductive carbon coat before analysis, the X-ray intensity detected from a specimen may be affected to various degrees by the thickness of the carbon coating. Differences in the carbon film thickness between specimens and standards may lead to errors in analytical results, particular for lower energy X-rays. In this study, we demonstrate that the location and the distance of the specimen relative to the carbon tip in the coating chamber can affect the thickness of the carbon film produced on the specimen surface during carbon coating. The closer the specimen is to the carbon tip contacting point, the thicker is the carbon film deposited. A mathematical model to calculate the carbon film thickness at different locations on the coater plate is established, based on the assumption that carbon atoms evaporate from the carbon tip equally in all directions during the coating process. In order to reduce the differences in the carbon coating thickness, we suggest moving the carbon rod to a higher position, moving the thinner samples to the center and thicker samples to the edge of the coater plate, and using a rotating circular coater plate during coating.

scholarly journals High speed formation of pyro-carbon coat on silicon carbide fiber by continuous chemical vapor deposition furnace

2017 ◽  
Vol 125 ◽  
pp. 442-446 ◽  
Author(s):  
Joon-Soo Park ◽  
Naofumi Nakazato ◽  
Naoyuki Takayama ◽  
Hirotatsu Kishimoto ◽  
Akira Kohyama
Keyword(s):  
Silicon Carbide ◽  
Chemical Vapor Deposition ◽  
Vapor Deposition ◽  
High Speed ◽  
Chemical Vapor ◽  
Silicon Carbide Fiber ◽  
Continuous Chemical ◽  
Carbon Coat

AN EASY METHOD TO SYNTHESIZE CARBON-COATED QUANTUM DOTS

Nano LIFE ◽  
2013 ◽  
Vol 03 (01) ◽  
pp. 1340006 ◽  
Author(s):  
STEPHEN A. VANCE ◽  
EFFAT ZEIDAN ◽  
LEE B. WILLIAMS ◽  
JOSEPH M. STAROBIN ◽  
MARINELLA G. SANDROS
Keyword(s):  
Quantum Dots ◽  
Spectroscopic Analysis ◽  
Metal Core ◽  
Easy Method ◽  
Simple Method ◽  
Carbon Coated ◽  
Uv Visible ◽  
Carbon Coat

This manuscript describes a general and simple method to carbon-coat quantum dots (QDs) using microwave-assisted technology. By coating QDs with carbohydrates, you extend their application for bioimaging (in vitro and in vivo) as the metal core is now shielded by a protective coating layer. XRD and TEM verified that nanoparticles were coated with a layer of carbon-based material (reduced sucrose). In addition, we demonstrated the versatility of this approach by coating other types of nanoparticles (i.e. gold). UV–Visible spectroscopic analysis presented a red shift in absorbance after carbon coating which further confirmed that the surface of these nanoparticles was modified. QDs emission wavelength was not altered but experienced an increase in intensity. The carbon-coated QDs and gold nanoparticles generated in this study measured 14 nm and 60 nm, respectively.

The influence of specific lubricants on the friction and wear properties of titanium aluminum nitride + solid carbon two-layer coating investigation

2020 ◽  
pp. 321-324
Author(s):  
I.A. Buyanovskii ◽  
V.D. Samusenko ◽  
S.S. Pilatskaya ◽  
V.A. Levchenko
Keyword(s):  
Aluminum Nitride ◽  
Wear Properties ◽  
Hard Carbon ◽  
Titanium Aluminum ◽  
Wear Spot ◽  
Surface Active ◽  
Friction And Wear Properties ◽  
Titanium Aluminum Nitride ◽  
Carbon Coat ◽  
Layer Coating

The influence of three model lubricants (inactive, surface-active and chemically active) on the friction-wear characteristics of steel—steel friction pairs, steel—coating of titanium aluminum nitride and steel—two-layer coating of titanium aluminum nitride + hard carbon coating is studied. The minimum coeffi cient of friction and the minimum diameters of the wear spot were established for the combination of steel-two-layer coating of titanium aluminum nitride + hard carbon coat ing-orientant in compared media.

Sign in / Sign up

Export Citation Format

Share Document