Study on Characteristics of ADI Coated DLC/ TiN /TiAlN Coatings by Cathodic Arc Evaporation

2006 ◽  
Vol 118 ◽  
pp. 257-264 ◽  
Author(s):  
Cheng Hsun Hsu ◽  
Jung Kai Lu ◽  
Ming Li Chen
Keyword(s):  
Surface Roughness ◽  
Corrosion Resistance ◽  
Surface Modification ◽  
Substrate Surface ◽  
Surface Hardness ◽  
High Carbon ◽  
Cathodic Arc Evaporation ◽  
Nodular Graphite ◽  
Arc Evaporation ◽  
Cathodic Arc

In this study, austempered ductile iron (ADI) substrate containing acicular ferrite and high-carbon austenite in the microstructure is made by austempering treatment at 360. Cathodic arc evaporation (CAE) coating technique was used to coat DLC, TiN and TiAlN films on ADI for surface modification. The results showed that the three coatings could be successfully coated onto ADI through CAE process without altering the unique microstructure of ADI. The structures of the coatings were identified by XRD, Raman and TEM, respectively. After HRC indentation testing, it was found that nodular graphite was the initial site of cracking for the coatings and then peeled. Surface roughness of all coated specimens was increased because the droplets generated on the substrate surface during the CAE process. Coated ADI had better wearability performance than uncoated ADI due to higher surface hardness. Coated specimens exhibited higher corrosion resistance than uncoated ones when they were immersed in separate solutions of both 3.5 wt. % NaCl and 10 vol. % HCl. In particular, TiAlN had the best corrosion resistance among the coated specimens.

Surface modification of Ti–Al targets during cathodic arc evaporation

2011 ◽  
Vol 205 (21-22) ◽  
pp. 5116-5123 ◽  
Author(s):  
David Rafaja ◽  
Conrad Polzer ◽  
Gerhard Schreiber ◽  
Peter Polcik ◽  
Martin Kathrein
Keyword(s):  
Surface Modification ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

scholarly journals Effect of Silicon Concentration on the Properties of Al-Cr-Si-N Coatings Deposited Using Cathodic Arc Evaporation

Materials ◽  
2020 ◽  
Vol 13 (21) ◽  
pp. 4717
Author(s):  
Bogdan Warcholinski ◽  
Adam Gilewicz ◽  
Piotr Myslinski ◽  
Ewa Dobruchowska ◽  
Dawid Murzynski ◽  
...  
Keyword(s):  
Corrosion Resistance ◽  
Protective Coatings ◽  
High Hardness ◽  
Silicon Concentration ◽  
Market Requirements ◽  
Order Of Magnitude ◽  
Cathodic Arc Evaporation ◽  
Machine Parts ◽  
Arc Evaporation ◽  
Cathodic Arc

The current market requirements are related to the introduction of new protective coatings for tools and machine parts with much better performance properties. These requirements are met by the AlCrSiN coatings; however, knowledge on the adhesion of these coatings to the substrate, as well as on their corrosion resistance, is deficient. The article presents the results of technological works on the coating deposition from AlCrSi cathodes with a silicon concentration from 0 at% to 10 at% by the cathodic arc evaporation and the results of systematic studies of their structure, mechanical, tribological and electrochemical properties. A correlation between the above-mentioned properties and the silicon concentration in the AlCrSiN coatings has been found and discussed. The coatings formed from cathodes containing less than 5 at% Si crystallize in the cubic structure. The size of the crystallites decreases with the silicon concentration increase. The coatings are characterized by a high hardness with a maximum of about 37 GPa (2 at% Si). The adhesion of the coatings is almost independent of the concentration of silicon. The wear rate is about one order of magnitude higher for coatings deposited from cathodes with a silicon concentration of 5 at% and 10 at% compared to a coating with a lower silicon concentration. This finding is consistent with the results of corrosion resistance studies. The coating deposited from the cathode with 10 at% of silicon exhibits the best anticorrosion properties against the salt solution.

Effect of TiN/Electroless Ni Duplex Coatings on Surface Hardness and Erosion Behavior of ADI

2013 ◽  
Vol 716 ◽  
pp. 203-208
Author(s):  
Cheng Hsun Hsu ◽  
Kuan Hao Huang ◽  
Yi Tsung Chen
Keyword(s):  
Surface Hardness ◽  
Electroless Nickel ◽  
Processing Temperature ◽  
Coating Properties ◽  
Cathodic Arc Evaporation ◽  
Electroless Ni ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Erosion Protection ◽  
Duplex Coatings

This study utilized electroless nickel (EN) and cathodic arc evaporation (CAE) technologies, with the known advantage of low processing temperature, to treat the austempered ductile iron (ADI) substrates. The eligibility of applying the EN and CAE-TiN duplex coatings on ADI, along with the coating properties, such as structure, roughness, adhesion, and surface hardness were evaluated and analyzed. Moreover, erosion tests were performed to further understand the effect of both the coatings on the erosive behavior of ADI. The results showed that the unique microstructure of ADI did not deteriorate after EN and CAE treatments. By the way of TiN/EN duplex coatings, surface hardness of ADI largely increased from 398 to 2243 HV5g. Moreover, the duplex coated ADI had a noticeable performance on erosion protection under a specific erosive environment with Al2O3 particles.

scholarly journals Structure and Properties of Protective Coatings Deposited by Pulsed Cathodic Arc Evaporation in Ar, N2, and C2H4 Environments using the TiC–NiCr–Eu2O3 Cathode

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 230 ◽  
Author(s):  
Philipp Kiryukhantsev-Korneev ◽  
Alina Sytchenko ◽  
Alexander Sheveyko ◽  
Stepan Vorotilo
Keyword(s):  
Corrosion Resistance ◽  
Friction Coefficient ◽  
Protective Coatings ◽  
Elastic Recovery ◽  
Optical Emission ◽  
Corrosion Current ◽  
Powder Metallurgy Method ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc

Coatings were deposited by pulsed cathodic arc evaporation (PCAE) of a TiC–NiCr–Eu2O3 cathode fabricated by the powder metallurgy method. The deposition was carried out in different gas media, including Ar, N2, and C2H4. The structure, elemental, and phase compositions of coatings were studied by scanning electron microscopy (SEM), X-ray diffraction (XRD), energy-dispersive spectroscopy (EDS), Raman spectroscopy, and glow discharge optical emission spectroscopy (GDOES). Coatings were tested in terms of their hardness, elastic modulus, elastic recovery, friction coefficient, and wear and corrosion resistance. The obtained results demonstrated that the coatings deposited in Ar possessed higher hardness up to 20 GPa and an elastic recovery of 92%. Coatings produced using С2H4 showed the minimum friction coefficient (0.35 ± 0.01). The use of nitrogen as a gas medium led to the formation of coatings with the best corrosion resistance in sulfuric acid. Coatings formed in N2 had a free corrosion potential of +0.28 V and a corrosion current density of 0.012 µA/cm2.

Cathodic Arc Evaporated CrAlSiN Coatings with Multi-Cycle Depositions

2014 ◽  
Vol 900 ◽  
pp. 517-521
Author(s):  
Yen Shuo Chang ◽  
Wei Yu Ho ◽  
Po Yi Tsou ◽  
Cheng Liang Lin
Keyword(s):  
Surface Roughness ◽  
Coating Thickness ◽  
Vickers Hardness ◽  
Scale Up ◽  
Coated Materials ◽  
Hardness Tests ◽  
Cathodic Arc Evaporation ◽  
Arc Evaporation ◽  
Cathodic Arc ◽  
Thermal And Chemical Stability

CrAlSiN film possesses superior hardness, good thermal and chemical stability due to its multi-component constituents and unique structure. To further explore the reproducibility and scale-up thickness of CrAlSiN coatings, the multi-cycle deposition of CrAlSiN coatings by cathodic arc evaporation was conducted in this study in order to evaluate the effect of coating thickness on the properties of CrAlSiN coated materials. Two targets of Al0.8Si0.2and Cr (99.99 at%) along with altering deposition cycles were used for the coatings. The results showed that the CrAlSiN coatings had an increase in hardness up to 4700 HV50gconfirmed by Vickers hardness tests. Surface roughness of the coatings could be dramatically improved by erosion tests as a result of removing droplets and higher asperities on the coating surface.

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