Research on the Process of (Ti,Cr)N by Multi-Arc Ion Plating and Microstructure of Composite Films

2013 ◽  
Vol 364 ◽  
pp. 721-726
Author(s):  
Yan Zhang ◽  
Yuan Gao ◽  
Wei Qin Wu ◽  
Lin Yuan ◽  
Cheng Lei Wang ◽  
...  

In this study, the (Ti,Cr)N composite films were deposited on 4Cr13 martensitic stainless steel by multi-arc ion plating (MAIP), researched the composition, morphology and micro-hardness of (Ti,Cr)N composite films by the method of changing the current of Cr target and Ti target. The result show that: with the acr current increasing, the Cr content of (Ti,Cr)N composite films increased, the Ti content decreased, the number and size of droplets decreased, and the hardness of composite films increased first, then decreased. When the acr current was 70A, the hardness reached the maximum. At the same time, the phases of composite films changed when the Cr content increased. When the value of X was 0.28, the phase of composite was TiN and when the value of X was 0.37 or 0.65, the composite films appeared the phase of CrN and Cr2N.

2010 ◽  
Vol 24 (15n16) ◽  
pp. 3095-3100 ◽  
Author(s):  
SATOSHI FUKUI ◽  
DAISUKE YONEKURA ◽  
RI-ICHI MURAKAMI

The surface properties like roughness etc. strongly influence the fatigue strength of high-tensile steel. To investigate the effect of surface condition and TiN coating on the fatigue strength of high-strength steel, four-point bending fatigue tests were carried out for martensitic stainless steel with TiN film coated using arc ion plating (AIP) method. This study, using samples that had been polished under several size of grind particle, examines the influence of pre-coating treatment on fatigue properties. A 2-µm-thick TiN film was deposited onto the substrate under three kinds of polishing condition. The difference of the hardness originated in the residual stress or thin deformation layer where the difference of the size of grinding particle of the surface polishing. And it leads the transformation of the interface of the substrate and the TiN film and improves fatigue limit.


2004 ◽  
Vol 2004.7 (0) ◽  
pp. 279-280
Author(s):  
Yuji TAKAGI ◽  
Daisuke MIYAKE ◽  
Daisuke YONEKURA ◽  
Satoshi FUKUI ◽  
Ri-ichi MURAKAMI

2009 ◽  
Vol 23 (15) ◽  
pp. 3213-3220
Author(s):  
SATOSHI FUKUI ◽  
DAISUKE YONEKURA ◽  
RI-ICHI MURAKAMI

To investigate the effect of TiN coating on the fatigue strength of high-strength steel, four-point bending fatigue tests were carried out for martensitic stainless steel with TiN film coated using arc ion plating (AIP) method. A 2-μm-thick TiN film was deposited onto the substrate surface under bias voltage of four kinds: VB = 0, -60, -160 and -260 V. For VB = 0, -160 V and -260 V, the fatigue limit increased. The highest fatigue limit of σ max = 900 MPa was obtained for VB = -160 V. But some samples for VB = -260 V showed the decrease of fatigue limit due to film delamination during the fatigue test. For VB = -60 V, the fatigue limit was unchanged by coating. As a result of a coating property analysis, the following conclusions were obtained. Fatigue crack propagation was almost independent of the bias voltage. Fatigue crack initiated from the subsurface in the substrate and the crack initiation behavior depended on the film property of the adhesion, residual stress, elastic modulus, and the film's hardness depended on the bias voltage especially for low fatigue stress level.


2011 ◽  
Vol 306-307 ◽  
pp. 274-279
Author(s):  
Qing Tao ◽  
Yan Wei Sui ◽  
Sun Zhi ◽  
Wei Song

AlN and TiN thin films are widely used in electronic devices and acoustic material and other fields because of its unique merit, the preparation of nitride thin films by using the arc ion plating has not been a systematic and deep study. The article presents our research procedure which the AlN and TiN thin films are deposited on stainless steel substrate by arc ion plating (AIP). The characteristics of thin films, for example microstructure, morphology, composition analysis and hardness, are examined and analyzed. The results showed that: Droplet-like particles appear in the microstructure of nitride thin films, and the grain size of droplet-like particles in AlN thin films is greater than in TiN thin films. The micro-hardness of nitride films preparation in experiment has improved significantly, and establish firmly basic for extending the application field of nitride film.


2010 ◽  
Vol 177 ◽  
pp. 338-341
Author(s):  
Ming Sheng Li ◽  
Yong Zhong Fan ◽  
Shu Juan Zhang

In this study, composite metastable (Ti0.49Al0.49Y0.02)N, (Ti0.44Al0.44Cr0.1Y0.02)N and (Ti0.34Al0.34Cr0.3Y0.02)N coatings were respectively deposited on a wrought martensite steel 1Cr11Ni2W2MoV for aero-engine compressor blades by arc ion plating technique with a pulse substrate bias. All the coatings have B1NaCl phase structure with a (220) preferred orientation and dense structures. The introduction of chromium into the coatings gave rise to a minute shrinkage of crystal lattice and a decrease of crystal size. Annealed at 800°C, Oxidation-resistance of the coatings improved with increased Cr content. But heat-treated at 900°C, the incorporation of Cr gave rise to obvious decrease of oxidation-resistance.


Coatings ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 451 ◽  
Author(s):  
Hongmei Zhu ◽  
Yongzuo Li ◽  
Baichun Li ◽  
Zhenyuan Zhang ◽  
Changjun Qiu

Post-treatment is crucial to improve the comprehensive performance of laser-cladded martensitic stainless steel coatings. In this work, a low-temperature tempering treatment (210 °C), for the first time, was performed on the laser-cladded AISI 420 martensitic stainless steel coating. The microstructure and properties of the pre- and post-tempering specimens were carefully investigated by XRD, SEM, TEM, a micro-hardness tester, a universal material testing machine and an electrochemical workstation. The results show that the as-cladded AISI 420 stainless steel coating mainly consisted of martensite, austenite, Fe3C and M23C6 carbides. The phase constituent of the coating remained the same, however, the martensite decomposed into finer tempered martensite with the precipitation of numerous nano-sized Fe3C carbides and reverted austenite in the as-tempered specimen. Moreover, a slight reduction was found in the micro-hardness and tensile strength, while a significant increase in elongation was achieved after tempering. The fractography showed a transition from brittle fracture to ductile fracture accordingly. The as-tempered coating exhibited a striking combination of mechanical properties and corrosion resistance. This work can provide a potential strategy to enhance the overall properties of the laser-deposited Fe-based coating for industrial applications.


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