Approaches to Increasing the Adhesion Strength of Hard Wear-Resistant Nanostructured Coatings Based on the Ti–B–(Cr, Si, C)–N System

2019 ◽  
Vol 55 (3) ◽  
pp. 502-510
Author(s):  
Ph. V. Kiryukhantsev-Korneev ◽  
A. N. Sheveiko ◽  
M. I. Petrzhik
JOM ◽  
2002 ◽  
Vol 54 (9) ◽  
pp. 28-30 ◽  
Author(s):  
Ajay P. Malshe ◽  
Wenping Jiang ◽  
Ajit R. Dhamdhere

2008 ◽  
Vol 604-605 ◽  
pp. 3-12 ◽  
Author(s):  
D. Vallauri ◽  
S. Grassini ◽  
Bruno DeBenedetti ◽  
R. Alexandre

Magnetron sputtering is a powerful process for the production of thin films and coatings employed for the surface modification of tools and engineering components in various industrial sectors. Nanostructured coatings for multifunctional applications were deposited by means of magnetron sputtering by adjusting the experimental parameters in order to tailor the chemistry, the microstructure and the morphology of the coatings. Among the several systems that were investigated, TiC–TiB2 for wear applications were successfully tested. TiC–TiB2 coatings were deposited on a hardmetal WC–Co substrate in an unbalanced DC magnetron sputtering system starting from composite targets fabricated by the Self-propagating High-temperature Synthesis (SHS) consolidation method, involving the material synthesis and densification in one step. The results, showing the achievement of nanostructured films with thickness ranging between 1 and 2 µm, are here presented. The properties evaluated on the developed films (hardness, adhesion, friction coefficient and volumetric wear) are promising for the improvement of wear-resistant applications.


Coatings ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 338
Author(s):  
Yanze Liu

Transparent superhydrophobic materials can be used in car glass, curtain walls, mobile phone screens, and other items. However, the hydrophobicity, transparency, and abrasion resistance of the transparent superhydrophobic coating are mutually restricted, and it is difficult to prepare transparent superhydrophobic coating with good performance. In this article, taking the mobile phone screen transparent coating as the research object, the inorganic silicon resin crystal coating as the main material, and the organic silicon resin as the binder and the hardness regulator, with the addition of the hydrophobically modifying nano silica particles, a high-transparent, wear-resistant, and superhydrophobic coating is researched. Experiments showed that when the composition mass ratio of SJ-32F resin to 9825 resin is 9:1 and the mass ratio of modified nano silica is 1.7%, the coating has a hardness of 3H–4H suitable for mobile phone screens, the contact angle of the coating can reach more than 150°, the rolling angle is less than 10°, and the light transmittance of the coating remains high at 91–95%. The cross-hatch adhesion strength of the coating reaches 5B, and the average adhesion strength measured by the adhesion pull tester is about 5.4 MPa. When the rubbing times reached 100, the light transmittance of the coating remained above 80%, and the contact angle remained basically unchanged.


2003 ◽  
Vol 766 ◽  
Author(s):  
A. Sekiguchi ◽  
J. Koike ◽  
K. Ueoka ◽  
J. Ye ◽  
H. Okamura ◽  
...  

AbstractAdhesion strength in sputter-deposited Cu thin films on various types of barrier layers was investigated by scratch test. The barrier layers were Ta1-xNx with varied nitrogen concentration of 0, 0.2, 0.3, and 0.5. Microstructure observation by TEM indicated that each layer consists of mixed phases of β;-Ta, bcc-TaN0.1, hexagonal-TaN, and fcc-TaN, depending on the nitrogen concentration. A sulfur- containing amorphous phase was also present discontinuously at the Cu/barrier interfaces in all samples. Scratch test showed that delamination occurred at the Cu/barrier interface and that the overall adhesion strength increased with increasing the nitrogen concentration. A good correlation was found between the measured adhesion strength and the composing phases in the barrier layer.


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