Influence of Substrate Temperature and Bias Voltage on Structure and Mechanical Properties of CrN Coatings

2013 ◽  
Vol 591 ◽  
pp. 99-103 ◽  
Author(s):  
Hao Zhang ◽  
Shu Wang Duo ◽  
Xiang Min Xu ◽  
Huan Ke ◽  
Ting Zhi Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Substrate Temperature ◽  
Deposition Rate ◽  
Bias Voltage ◽  
High Deposition Rate ◽  
Properties Of Coatings ◽  
Unbalanced Magnetron ◽  
Magnetron Sputter ◽  
Influence Of Substrate ◽  
Crn Coatings

CrN coatings have been deposited successfully by Closed Filed Unbalanced Magnetron Sputter Ion Plating (CFUMSIP). The effect of substrate temperature (TS) and bias voltage (VB) together on microstructure, morphologies and mechanical properties of CrN coatings were studied. The results showed that the deposition rate of CrN coatings declines with the increase of VB Under both room temperature (R.M.) and 300°C. The FCC-CrN disappeared gradually and orth-CrN arised with the increase of VB, and the TS promoted the transformation from FCC - CrN to orth - CrN. The surface morphology of CrN coatings with changed VBs was greatly different, and VB could further improve the mechanical properties of coatings. In this paper, the CrN coating with the parameters (TS =300°C, VB =-30V) had relatively high deposition rate and mechanical properties.

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.

Theoretical Analysis of Chroming Electrolytes and Properties of Chrome Coatings

2020 ◽  
Vol 836 ◽  
pp. 142-150
Author(s):  
Yu.A. Stekolnikov ◽  
S.D. Polischuk ◽  
D.G. Churilov ◽  
N.V. Byshov ◽  
S.N. Borychev ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chemical Composition ◽  
Deposition Rate ◽  
Transition Time ◽  
Internal Stresses ◽  
High Deposition Rate ◽  
Micro Hardness ◽  
Properties Of Coatings ◽  
Current Output ◽  
Low Concentration

According to the dynamic characteristics of the electrochemical system, according to V.F. Molchanov, it is possible to optimize the composition of chroming electrolyte and predict the properties of chromium deposits depending on the mode of deposition and the transition time. The possibility of using the transition time for the formation of the cathode surface colloid-dispersion film to study the chemical composition of the chroming solution is considered. The chemical composition can be optimized by the position of the maxima and minima on the polarization curves. An electrochemical cell can be described as a system by a differential equation, the form of which is determined by its internal structure, which varies with electrolysis conditions. The properties of the system are evaluated by a number of factors: the time of the transition process, forcing, attenuation, and the quality factor. This approach is used to develop a low-concentration chroming electrolyte with organic additives. Analytical dependences of chromium yield on current, micro hardness, roughness and deposition rate on deposition conditions are obtained. Chroming on non-stationary modes allows the most effective influence on the structure and physical-mechanical properties of coatings. When changing electrolysis parameters, it is possible to influence the structure and physical-mechanical properties of coatings, to obtain various functional chromium coatings with specified characteristics (adjustable micro hardness in thickness, porosity, internal stresses, corrosion resistance, wear resistance, roughness) from a single electrolyte. The use of a low-concentration electrolyte together with non-stationary deposition modes makes possible to increase the chromium current yield, covering and dissipative ability of the electrolyte, deposition rate, producibility and environmental friendliness of the process, and to reduce hydrogenation. The electrolyte with crystal violet additives has an increased current output (up to 28 %), an extended range of obtaining wear-resistant coatings up to 240 A / dm2, a high deposition rate of up to 2.5 μm / min, an increased micro hardness by 100-300 kg / mm2, reduced toxicity, a decreased absorbed hydrogen level at 500-700 cm3 per 100 grams of chrome coating and internal stresses at 600-950 kg / mm2.

Mechanical Properties and Oxidation Resistance of CrN Coatings Deposited by Closed Field Unbalanced Magnetron Sputter Ion Plating

2013 ◽  
Vol 591 ◽  
pp. 176-179 ◽  
Author(s):  
Hao Zhang ◽  
Shu Wang Duo ◽  
Xiang Min Xu ◽  
Fei Fei Luo ◽  
Ting Zhi Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Closed Field ◽  
Temperature Oxidation ◽  
Ion Plating ◽  
Unbalanced Magnetron ◽  
Before And After ◽  
Magnetron Sputter ◽  
Crn Coatings

CrN coatings were prepared by Closed Filed Unbalanced Magnetron Sputter Ion Plating (CFUMSIP). The microstructure and morphologies of CrN coatings before and after oxidation were analyzed by XRD and SEM. At the same time, the mechanical properties and oxidation resistance of CrN coating were also studied. The results indicate that the phase in the dense CrN coatings with a hardness of 1979 HV and a adhension of 54 N was the coexistence of Cr, Cr2N and CrN. Besides, The CrN coatings showed good high-temperature oxidation resistance at 700°C while the coating failed at 800°C.

Synthesis and Characterization of CrXN Nano-Multilayer Coatings

2008 ◽  
Vol 373-374 ◽  
pp. 126-129
Author(s):  
H.Q. Li ◽  
X.Y. Li ◽  
Hai Lin Sun ◽  
Dennis Teer ◽  
Han Shan Dong
Keyword(s):  
Synthesis And Characterization ◽  
Multilayer Coatings ◽  
Closed Field ◽  
Wear Properties ◽  
Ion Plating ◽  
Unbalanced Magnetron ◽  
Magnetron Sputter ◽  
Crn Coatings ◽  
Wear Tests

Three types of nano-multilayer coatings, CrSiN, CrAlN and CrMoN, with different Si, Al and Mo contents were deposited on M42 substrates using a closed field unbalanced magnetron sputter ion plating (CFUMSIP) technique. Systematic characterization on the chemical composition, microstructure, hardness and wear properties of these multilayer coatings has been investigated using GDOES, low angle XRD, SEM, TEM, nanoindentation and wear tests. Experimental results revealed that all these three types of Cr, XN ternary coatings (X=Al, Si and Mo) are nano-multilayer structured. The CrAlN multilayer coatings showed the highest hardness and oxidation resistance among these three multilayer coatings. The CrMoN multilayer coatings exhibited the lowest friction coefficient although no appreciable improvements in wear resistance were observed as compared with the optimized CrN coatings.

scholarly journals Modifying the nanostructure and the mechanical properties of Mo2BC hard coatings: Influence of substrate temperature during magnetron sputtering

2018 ◽  
Vol 142 ◽  
pp. 203-211 ◽  
Author(s):  
Stephan Gleich ◽  
Rafael Soler ◽  
Hanna Fager ◽  
Hamid Bolvardi ◽  
Jan-Ole Achenbach ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Magnetron Sputtering ◽  
Substrate Temperature ◽  
Hard Coatings ◽  
Influence Of Substrate

scholarly journals Influence of substrate temperature and bias voltage on the optical transmittance of TiN films

Vacuum ◽  
2003 ◽  
Vol 70 (1) ◽  
pp. 21-28 ◽  
Author(s):  
H.Zafer Durusoy ◽  
Özlem Duyar ◽  
Atilla Aydınlı ◽  
Feridun Ay
Keyword(s):  
Substrate Temperature ◽  
Bias Voltage ◽  
Optical Transmittance ◽  
Tin Films ◽  
Influence Of Substrate

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.

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