Synthesis and Properties of Crystalline Carbon Nitride Composite Superhard Coatings

1995 ◽  
Vol 403 ◽  
Author(s):  
Yip-Wah Chung

AbstractMultilayer carbon nitride/TiN coatings were synthesized using a dual-cathode dc magnetron sputtering system. Fully crystalline films can be obtained when the thickness of the carbon nitride component is on the order of one nm. There appears to be a strong correlation between the occurrence of strong TiN(111) texture and the hardness of these multilayer coatings, as controlled by target powers, nitrogen partial pressure and substrate bias. These coatings can be synthesized at near room temperatures, with smooth surface morphology and hardness in the range of 45–55 GPa.

2012 ◽  
Vol 482-484 ◽  
pp. 1130-1133
Author(s):  
Jin Long Li ◽  
Shou Dong Mao ◽  
Zhen Lun Song ◽  
Qun Ji Xue

TiN protective coating was prepared on NdFeB by DC magnetron sputtering to improve the corrosion resistance and scratch resistance of the magnetic. During deposition, the nitrogen/argon mixture gas was introduced into the chamber with the nitrogen partial pressure at 20 % and 10 % and the bias of 200 V was applied to subtract, respectively. At a lower nitrogen partial pressure of 10%, TiN coating was composed of many particles with an irregular shape. With increasing the nitrogen pressure to 20%, composing particles become small and show as the regular trihedron shape. All TiN coatings have a cubic structure. The bias makes the depositing TiN coating denser and preferential growth become no obvious. By the nitrogen partial pressure of 20 % and bias of 200 V, the dense TiN coating has best corrosion resistance and excellent wear resistance.


2018 ◽  
Vol 348 ◽  
pp. 159-167 ◽  
Author(s):  
M. Trant ◽  
M. Fischer ◽  
K. Thorwarth ◽  
S. Gauter ◽  
J. Patscheider ◽  
...  

Author(s):  
Sonny Massahi ◽  
Desiree Ferreira ◽  
Michael Avngaard ◽  
Aksel Christensen ◽  
Daniel Haugbølle ◽  
...  

2005 ◽  
Vol 872 ◽  
Author(s):  
Joondong Kim ◽  
Wayne A. Anderson ◽  
Young-Joo Song

AbstractNickel monosilicide (NiSi) nanowires (NWs) have been fabricated by the metal induced growth (MIG) method. Ni as a catalyst was deposited on a SiO2 coated Si wafer. In a DC magnetron sputtering system, the Ni reacts at 575°C with sputtered Si to give nanowires. Different metal catalysts (Co and Pd) were used to prove the MIG NW growth mechanism. NiSi NWs were a single crystal structure, 20-80 nm in diameter and 1-10 μm in length. The linear NW growth property provided nanobridge formation in a trenched Si wafer. The trenches in a Si wafer were made by dry etching and a simple, conventional metal lift off method. The self-assembled nanobridge can be applied to form nanocontacts at relatively low temperatures. The MIG NB is a promising 1 dimensional nanoscale building block to satisfy the need of ‘self and direct’ assembled ‘bottom-up’ fabrication concepts.


1999 ◽  
Vol 355-356 ◽  
pp. 85-88 ◽  
Author(s):  
A.K.M.S. Chowdhury ◽  
D.C. Cameron ◽  
M.A. Monclus

2019 ◽  
Vol 823 ◽  
pp. 9-14
Author(s):  
Yen Liang Su ◽  
Sun Hui Yao ◽  
Yu Chen Lai ◽  
Huang Ming Wu

This study aimed to understand the influence of small amount of Zr doping of amorphous carbonitride (a-CN) coatings on the structure, and mechanical and tribological behavior. The coatings were prepared using a four-target close-field unbalance magnetron sputtering system; two graphite, one Ti and one Zr targets were used. GDOS, SEM, XRD and XPS were used. A surface profilometer, a nanohardness tester, and a pin-on-disk wear tester were used. It was found the Zr doping resulting in the formation of ZrC and ZrN phases within the coating and the increase in the sp3 bonding fraction. The nanohardness was increased and the wear performance was largely improved.


2018 ◽  
Vol 25 (05) ◽  
pp. 1850097
Author(s):  
QIJING LIN ◽  
WEIXUAN JING ◽  
ZHUANGDE JIANG ◽  
NA ZHAO ◽  
ZIRONG WU ◽  
...  

Sandwich stacked Ti/Cu/Si thin films were deposited on a single-side polished Si(111) substrate using DC magnetron sputtering system and annealed using a rapid thermal annealing (RTA) system. Complex dendritic patterns, whose branches are composed of Cu rods and triangular Cu microcrystals were obtained on Ti/Cu thin film annealed at 700[Formula: see text]C. The shape of one triangular Cu microcrystal is a truncated equilateral triangular pyramid with a flat top. Triangular Cu microcrystals grow in the number when Ti/Cu thin films are annealed at 800[Formula: see text]C. Experimental results show that anisotropy affects the growth of surface patterns and the top Ti capping layer works as a protection for the underlying Cu layer from oxidation.


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