Effects of Al Content on the Microstructures and Oxidation Resistance of Cr1-xAlxN Films Synthesized by Multi-Arc Ion Plating Method

2012 ◽  
Vol 155-156 ◽  
pp. 579-584 ◽  
Author(s):  
Zhi Hai Cai ◽  
Yue Lan Di ◽  
Zhen Yang ◽  
Ping Zhang
Keyword(s):  
Oxidation Resistance ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Preferential Growth ◽  
Ion Plating ◽  
Al Content ◽  
Plating Method ◽  
Structure Surface ◽  
Crn Coatings ◽  
Preferential Growth Orientation

The CrAlN composite coatings with different Al content are deposited on 65Mn steel substrate by multi-ion plating technology. The structure, surface morphology, composition and oxidation resistance of CrAlN composite coatings are tested by XRD, EDS, SEM and oxidation furnace, respectively. The experimental results show that the preferential growth orientation of the coatings was changed from CrN (111) to CrN (200) after the addition of Al element. And the surface roughness of CrAlN coatings increase gradually with increasing of Al content. Compared with CrN coatings, the CrAlN composite coatings show much better oxidation resistance. And the oxidation resistance ability will enhance with increasing Al content, because Al and Cr oxide form after oxidation in high temperature condition which could reduce the diffusivity ability of oxygen.

Microstructure, Hardness and Oxidation Resistance of CrN and CrAlN Coatings Synthesized by Multi-Arc Ion Plating Technology

2010 ◽  
Vol 168-170 ◽  
pp. 2430-2433 ◽  
Author(s):  
Zhi Hai Cai ◽  
Zhang Ping ◽  
Yue Lan Di
Keyword(s):  
Oxidation Resistance ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Spring Steel ◽  
X Ray Diffraction ◽  
Arc Ion Plating ◽  
X Ray ◽  
Ion Plating ◽  
Al Content ◽  
Crn Coatings

Approximately 2 μm thick CrN and CrAlN coatings were synthesized on silicon and spring steel substrate by multi-arc ion plating technology. The nanoindentation techniques, Auger electron spectroscopy (AES) analysis, scanning electron microscopy, X-ray diffraction and oxidation furnace were used to investigate the mechanical property, oxidation resistance and microstructure of the coatings. The XRD data showed that the CrN and CrAlN coatings exhibited B1 NaCl structure. Nanoindentation measurements showed that as-deposited CrN and CrAlN coatings exhibited a hardness of 19 and 30 GPa respectively. Compared with CrN coatings, the CrAlN composite coatings show much better oxidation resistance. And the oxidation resistance ability will enhance with increasing Al content, because A12O3 will form after oxidation in high temperature condition which could reduce the diffusivity ability of oxygen.

Compositional, Structural and Mechanical Properties of (Ti,Cr,Al)N Coatings Deposited on the Surface of Piston Rings

2014 ◽  
Vol 584-586 ◽  
pp. 1495-1499 ◽  
Author(s):  
Zhi Hai Cai ◽  
Hang Qin ◽  
Xiao Kun Du ◽  
Zhen Yang
Keyword(s):  
Composite Coatings ◽  
Deposition Velocity ◽  
Composite Films ◽  
Preferential Growth ◽  
X Ray ◽  
Ion Plating ◽  
Maximum Value ◽  
Arc Current ◽  
Crn Coatings ◽  
Preferential Growth Orientation

A novel super hard coating system of (Ti,Cr,Al)N was synthesized by multi arc ion plating technology. The Metallic ratio of Cr, Ti, and Al was varied by adjusting the currents of different TiAl target. The CrTiAlN composite coatings with different chemical composition were deposited on the surface of 65Mn steels by multi-ion plating technology in a gas mixture of Ar+N2. The coatings were characterized by means of energy dispersive X-ray(EDX) analysis, X-ray diffractmetry(XRD), scanning electronic microscopy(SEM), microhardness tester respectively. The experimental results show that the deposition velocity of CrTiAlN coatings reached maximum value, about 72nm/min. And the surface morphology of CrAlTiN films are compact and dense. The main composition of CrTiAlN composite films is Cr、Ti、Al、N, with the mass percent of Cr 29.61%,Ti 21.42%,Al 14.88%,N 34.10%. And the cross-section morphology appears as fibrous columnar crystals structure. Compared with CrN coatings, the preferential growth orientation of CrAlTiN films was changed from CrN (111) to CrN (200) after the addition of Ti, Al element. When the TiAl target arc current was 50A, the hardness reached the maximum value, 35GPa.

High-Temperature Oxidation Resistance of Electroless Ni-P-ZrO2 Composite Coatings

2011 ◽  
Vol 686 ◽  
pp. 569-573 ◽  
Author(s):  
Ming Feng Tan ◽  
Wan Chang Sun ◽  
Lei Zhang ◽  
Quan Zhou ◽  
Jin Ding
Keyword(s):  
High Temperature ◽  
Carbon Steel ◽  
Oxidation Resistance ◽  
High Temperature Oxidation ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Low Carbon ◽  
Temperature Oxidation ◽  
P Matrix ◽  
Electroless Ni

Electroless Ni-P coating containing ZrO2particles was successfully co-deposited on low carbon steel substrate. The surface and cross-sectional micrographs of the composite coatings were observed with scanning electron microscopy (SEM). And the chemical composition of the coating was analyzed with energy dispersive spectroscopy (EDS). The oxidation resistance was evaluated by weight gains during high temperature oxidation test. The results showed that the embedded ZrO2particles with irregular shape uniformly distributed in the entire Ni-P matrix, and the coating showed a good adhesion to the substrate. The weight gain curves of Ni-P-ZrO2composite coatings and Ni-P coating at 923K oxidation experiments were in accordance with . The ZrO2particles in Ni-P matrix could significantly enhance the high temperature oxidation resistance of the carbon steel substrate as compared to pure Ni-P coating.

High Temperature Oxidation of TiAl(La)N Coating Deposited on a Steel Substrate by Arc-Ion Plating

2006 ◽  
Vol 510-511 ◽  
pp. 410-413
Author(s):  
Y.A. Shapovalov ◽  
Dong Bok Lee
Keyword(s):  
High Temperature ◽  
High Temperature Oxidation ◽  
Steel Substrate ◽  
Temperature Oxidation ◽  
Arc Ion Plating ◽  
Ion Plating ◽  
Outward Transport ◽  
Plating Method ◽  
High Temperature Oxidation Behavior ◽  
Kinetics Of

The high temperature oxidation behavior of the TiAl(La)N coating, which was deposited on a steel substrate by the arc-ion plating method, was investigated at 700, 800 and 900oC in atmospheric air. The oxidation kinetics of the coating were mainly governed by the inward diffusion of oxygen and outward transport of nitrogen. The oxide scale was porous, nonadherent, and prone to cracking, indicating the oxidation resistance above 700oC is poor.

Microstructure of CrN-Based Nano Composite Solid Lubrication Films

2011 ◽  
Vol 295-297 ◽  
pp. 2007-2010
Author(s):  
Ping Zhang ◽  
Yue Lan Di ◽  
Zhi Hai Cai ◽  
Yang Zhen
Keyword(s):  
Composite Coatings ◽  
Solid Lubrication ◽  
X Ray Diffraction ◽  
Preferential Growth ◽  
Nano Composite ◽  
Valence States ◽  
Diffraction Peaks ◽  
Mo Content ◽  
Composite Solid ◽  
Preferential Growth Orientation

The complex plating-sulfurizing process which fitted magnetron sputtering together with low temperature ion sulfurizing, was utilized to prepare a new CrN-based nano composite solid lubrication films with different Mo content. The structure, surface morphology, composition, and valence states of CrMoN composite coatings are tested by XRD, EDS, SEM and XPS respectively. The SEM results showed that the roughness of CrN composite coating reduces with addition of Mo element. X-ray diffraction pattern indicated that the preferential growth orientation of the coatings is changed from CrN (111) to CrN (220) after the addition of Mo element, the diffraction peaks shift leftwards as Mo content increasing, and the majority of phases are Mo2N and CrN, besides which MoS2 and Cr2S3 were created.

Oxidation Resistance of Ni-Co-ZrO2 Composite Coatings

2011 ◽  
Vol 694 ◽  
pp. 799-803 ◽  
Author(s):  
Wan Chang Sun
Keyword(s):  
Carbon Steel ◽  
Composite Coating ◽  
Oxidation Resistance ◽  
Steel Substrate ◽  
Composite Coatings ◽  
Effective Area ◽  
Temperature Oxidation ◽  
Lower Weight ◽  
Ambient Oxygen ◽  
Lower Weight Gain

Ni-Co alloy and ZrO2 particles were successfully codeposited on middle carbon steel substrate by electrodeposition. The oxidation resistance was evaluated by weight gains during high temperature oxidation test. The results indicate that, when the oxidation temperature is 573 K or 873 K, middle carbon steel, Ni-Co coating and Ni-Co-ZrO2 composite coating show lower weight gain. While the temperature is up to 1173 K, Ni-Co-ZrO2 composite coating possesses better oxidation resistance than Ni-Co coating and 45 steel. The reason may be that, the dispersive ZrO2 particles in the Ni-Co matrix reduce the effective area of Ni-Co alloy contacting with ambient oxygen, and new phases like NiO and CoO further prevent inward oxygen diffusion.

Structure of Al-based composite coatings prepared by thermal diffusion of the arc-ion plating Al coatings

2019 ◽  
Vol 33 (01n03) ◽  
pp. 1940021
Author(s):  
Wenmao Yang ◽  
Xueyuan Li ◽  
Dongxing Du ◽  
Yinchun Cao ◽  
Yongxiang Leng
Keyword(s):  
High Temperature ◽  
Oxidation Resistance ◽  
Thermal Diffusion ◽  
High Temperature Oxidation ◽  
Composite Coatings ◽  
Resistant Steel ◽  
Temperature Oxidation ◽  
X Ray ◽  
Ion Plating ◽  
Diffusion Treatment

In order to improve the high-temperature oxidation resistance of the hydrogen-resistant steel, Al coatings were firstly deposited on the hydrogen-resistant steel by arc-ion plating and then the thermal diffusion treatment was used to produce the Al-based composite coatings on the hydrogen-resistant steel. The effect of thermal diffusion parameters on the structure of Al-based composite coatings was studied. The crystal structure, composition and morphology of Al-based composite coatings were analyzed by using X-ray diffraction (XRD), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS) and scanning electron microscope (SEM). The results showed that the double inner diffusion layer was formed on Al coatings treated at 700[Formula: see text]C. And the single inner diffusion layer with uniform composition distribution could be formed on Al coatings treated at 950[Formula: see text]C. The Al-based composite coating prepared by thermal diffusion treatment at 950[Formula: see text]C had a dense and thick [Formula: see text]-Al2O3 surface layer, and it exhibited good high-temperature oxidation resistance.

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.

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