The influence of deposition conditions and bilayer thickness on physical-mechanical properties of CA-PVD multilayer ZrN/CrN coatings

2018 ◽  
Vol 140 ◽  
pp. 189-196 ◽  
Author(s):  
Olga Maksakova ◽  
Sonia Simoẽs ◽  
Alexander Pogrebnjak ◽  
Oleksandr Bondar ◽  
Yaroslav Kravchenko ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bilayer Thickness ◽  
Crn Coatings ◽  
Deposition Conditions

scholarly journals Microstructure and Corrosion Behavior of Ni-Alloy/CrN Nanolayered Coatings

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Hao-Hsiang Huang ◽  
Fan-Bean Wu ◽  
Jyh-Wei Lee ◽  
Li-Chun Chang
Keyword(s):  
Corrosion Behavior ◽  
Single Layer ◽  
Phase Identification ◽  
Bilayer Thickness ◽  
Ni Alloy ◽  
Nitride Coatings ◽  
Superior Corrosion Resistance ◽  
Corrosion Mechanisms ◽  
Steel Substrates ◽  
Crn Coatings

The Ni-alloy/CrN nanolayered coatings, Ni-Al/CrN and Ni-P/CrN, were deposited on (100) silicon wafer and AISI 420 stainless steel substrates by dual-gun sputtering technique. The influences of the layer microstructure on corrosion behavior of the nanolayered thin films were investigated. The bilayer thickness was controlled approximately 10 nm with a total coating thickness of . The single-layer Ni-alloy and CrN coatings deposited at were also evaluated for comparison. Through phase identification, phases of Ni-P and Ni-Al compounds were observed in the single Ni-alloy layers. On the other hand, the nanolayered Ni-P/CrN and Ni-Al/CrN coatings showed an amorphous/nanocrystalline microstructure. The precipitation of Ni-Al and Ni-P intermetallic compounds was suppressed by the nanolayered configuration of Ni-alloy/CrN coatings. Through Tafel analysis, the and values ranged from –0.64 to –0.33 V and to  A/, respectively, were deduced for various coating assemblies. The corrosion mechanisms and related behaviors of the coatings were compared. The coatings with a nanolayered Ni-alloy/CrN configuration exhibited a superior corrosion resistance to single-layer alloy or nitride coatings.

The effect of substrate bias on the characteristics of CrN coatings deposited by DC-superimposed HiPIMS system

2017 ◽  
Vol 31 (16-19) ◽  
pp. 1744032 ◽  
Author(s):  
X. Zuo ◽  
F. Xia ◽  
D. Zhang ◽  
P. L. Ke ◽  
Q. M. Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Bias Voltage ◽  
Indentation Test ◽  
Grain Structure ◽  
Substrate Bias ◽  
Cross Sectional ◽  
Microstructure And Mechanical Properties ◽  
Columnar Grain ◽  
Influence Of Substrate ◽  
Crn Coatings

Chromium nitride coatings were prepared by reactive DC-superimposed high-power-impulse magnetron sputtering (HiPIMS) system. The influence of substrate bias on the microstructure and mechanical properties of CrN coatings was investigated. XRD and cross-sectional SEM were utilized to characterize the film structures. Mechanical properties were characterized by nanoindentation and Vickers indentation test. The results revealed that the microstructure and mechanical properties of CrN coatings were affected by bias voltage. The CrN coatings exhibited dense and fine columnar grain structure with the hardness of about 18.7 GPa. The fracture toughness of CrN coatings was around 3.16 MPa ⋅ m[Formula: see text]. However, further increase of the bias voltage from −250 V to −300 V led to the degradation of coating properties.

Structural and Mechanical Properties of TiC/Ti and TiC/B4C Multilayers Deposited by Pulsed Laser Deposition

2002 ◽  
Vol 17 (6) ◽  
pp. 1390-1398 ◽  
Author(s):  
A. R. Phani ◽  
J. E. Krzanowski ◽  
J. J. Nainaparampil
Keyword(s):  
Mechanical Properties ◽  
Pulsed Laser Deposition ◽  
Photoelectron Spectroscopy ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Degree Of Crystallinity ◽  
Bilayer Thickness ◽  
Orientation Relationships ◽  
X Ray ◽  
Pin On Disc

Multilayers of TiC/Ti and TiC/B4C have been deposited by pulsed laser deposition. Ti, B4C, and TiC targets were used to deposit multilayer films onto 440C steel and silicon substrates at 40 °C. The structural, compositional, and mechanical properties of the multilayers were examined by x-ray diffraction, x-ray photoelectron spectroscopy, transmission electron microscopy, and nanoindentation techniques. Tribological properties were also evaluated using a pin-on-disc friction and wear test. The TiC/Ti films were found to have a crystalline structure, and both (200)TiC/(100)Ti and (111)TiC/(101)Ti orientation relationships were found in these films. In the TiC/B4C films, only the sample with the largest bilayer thickness (25 nm) had significant crystallinity and only the TiC layer was crystalline. X-ray photoelectron spectroscopy depth profiles confirmed the presence of composition modulations in these films. Nanoindentation tests of the TiC/Ti multilayers showed hardness levels exceeding that predicted by the rule-of-mixtures. The TiC/B4C multilayers showed increasing hardness with decreasing bilayer thickness but reached only 22 GPa. The pin-on-disc tests gave friction values ranging from 0.3 to 0.9 for both sets of films. These results were correlated with the degree of crystallinity and grain structure of the films.

Structural and Mechanical Properties of Multilayer TiN/CrN Coatings

2007 ◽  
Author(s):  
Manohar S. Konchady ◽  
Sergey Yarmolenko ◽  
Devdas M. Pai ◽  
Jag Sankar
Keyword(s):  
Mechanical Properties ◽  
Layer Thickness ◽  
Single Layer ◽  
Preferred Orientation ◽  
X Ray Diffraction ◽  
Unbalanced Magnetron Sputtering ◽  
Deposition Parameters ◽  
Unbalanced Magnetron ◽  
Crn Coatings ◽  
Modulation Wavelength

Multilayer and superlattice coatings of TiN/CrN coating are deposited on Si(100) substrate at different modulation wavelength by reactive unbalanced magnetron sputtering and characterized using X-ray diffraction, nanoindentation, AFM. Nano-roughness of films is in good correlation with hardness and modulus and this effect has been used for optimization of deposition parameters. Preliminary results have shown slightly better mechanical properties for multilayered TiN/CrN coatings compared to single layer TiN and CrN coatings. The XRD results have shown a preferred orientation in <100> direction for TiN/CrN multilayer coatings at modulation wavelengths below 80 nm. At 100 nm layer thickness, TiN revealed small amount of crystals with <111> orientation and their content significantly increases with increase in layer thickness while CrN layers only show preferred orientation of <100>. Multilayered coatings exhibit better mechanical properties due to presence of large number of interfaces which act as barrier to dislocations. Fracture toughness and tribological properties of these coatings are also expected to show significant improvement and the investigation in this area is under progress.

Effect of Temperature on Structure and Mechanical Properties of CrN Coatings Deposited by Closed Field Unbalanced Magnetron Sputtering

2013 ◽  
Vol 591 ◽  
pp. 190-193
Author(s):  
Hao Zhang ◽  
Shu Wang Duo ◽  
Xiang Min Xu ◽  
Ting Zhi Liu
Keyword(s):  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Grain Shape ◽  
Effect Of Temperature ◽  
Closed Field ◽  
Columnar Crystal ◽  
Crn Coating ◽  
Unbalanced Magnetron Sputtering ◽  
Unbalanced Magnetron ◽  
Crn Coatings

CrN coatings were fabricated by Closed Filed Unbalanced Magnetron Sputtering (CFUMS). The effect of substrate temperature (TS) on phase components, morphologies and mechanical properties of CrN coatings were studied. The results show that the phase in coatings, which has little to do with TS, was the coexistence of Cr, Cr2N and CrN. The grain shape of the columnar crystal CrN coating was the coexistence of pyramidal and plane topography. The hardness and adhension of CrN coating first increased with the rise of temperature, then decreased when the values of both them were constant ones. It has the highest hardness and bonding strength simultaneously at 300°C.

Effect of the Cr content on the mechanical properties of nanostructured TiN/CrN coatings

2004 ◽  
Vol 177-178 ◽  
pp. 426-433 ◽  
Author(s):  
Sang Yul Lee ◽  
Gwang Seok Kim ◽  
Jun Hee Hahn
Keyword(s):  
Mechanical Properties ◽  
Cr Content ◽  
Crn Coatings

Mechanical Properties of CrN Films Deposited by Magnetron Sputtering Method

Tribology ◽  
2006 ◽  
Author(s):  
A. H. Jayatissa ◽  
D. Wagner ◽  
S. Sorin ◽  
N. X. Randall
Keyword(s):  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Rf Magnetron Sputtering ◽  
Film Properties ◽  
Adhesion Properties ◽  
Force Microscopy ◽  
Glass Substrates ◽  
Atomic Force ◽  
Mechanical Coating ◽  
Deposition Conditions

The mechanical properties of CrN films coated by radio frequency (rf) magnetron sputtering method were investigated. CrN films were coated on stainless steel, silicon wafer and glass substrates using sputtering of a Cr target in nitrogen ambient. The films were coated by varying the deposition temperature, nitrogen partial pressure and rf power density. The films coated were characterized by nanoindentation method, microhardness, optical, and corrosion tests. In order to use CrN as mechanical coating material, the surface roughness, hardness and adhesion properties have to be determined. The film properties were measured using atomic force microscopy and nanoindentation method and analyzed as a function of deposition conditions. It was found that these properties can be varied by changing the deposition conditions.

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