Inicio  /  Coatings  /  Vol: 8 Núm: 1 Par: January (2018)  /  Artículo
ARTÍCULO
TITULO

Influence of Oxygen Contents on the Microstructure, High Temperature Oxidation and Corrosion Resistance Properties of Cr?Si?O?N Coatings

Jinjue Liang    
Shimin Chen    
Changwei Zou    
Canxin Tian    
Zesong Wang and Shijun Liao    

Resumen

Cr?Si?O?N coatings with different oxygen contents were deposited by multi-arc ion plating, where various O2/(N2 + O2) reactive gas rates were adopted. The XRD and XPS results showed that the CrN crystals disappeared with the increasing of the oxygen flux ratio to 10 at.%. The microhardness of all the Cr?Si?O?N coatings was approximately 2000 Hv0.05, which were dramatically plummeted compared to that of the Cr?Si?N coatings (?3300 Hv0.05). The Cr?Si?O?N coatings were annealed under 800 °C and 1200 °C in the air atmosphere for 2 h to study the high-temperature oxidation resistance of the coatings. Meanwhile, Cr?Si?O?N coatings with different O2/(N2 + O2) rates were also used to carry out the corrosion resistance testing using the electrochemical working station in 3.5% NaCl solution under free air condition at room temperature. The results indicated that the coatings containing oxygen were more vulnerable to the high-temperature destruction and more easily corroded in the NaCl electrolyte.

 Artículos similares

       
 
Jaroslav Demeter, Branislav Bulko, Peter Demeter and Martina Hrubovcáková    
Identification of the factors influencing refractory lining wear and its residual thickness in the basic oxygen furnace (BOF) is a prerequisite for optimizing the steelmaking process. In this study, the factors that contribute significantly to the wear o... ver más
Revista: Applied Sciences

 
Sandra Gerland and Annika Raatz    
Aluminum surfaces in a normal atmosphere are always coated with a native oxide layer. To prevent a new layer from forming after this oxide layer has been removed, an environment without oxygen must be created. This work uses a new method of doping an ine... ver más
Revista: Applied Sciences

 
Zerui Gong, Yanling Wang, Heping Hu, Pengfei Chen, Yao Lu, Lei Wang and Shaobin Huang    
Black-odorous water bodies in the Pearl River Delta have been treated. However, the re-release of nitrogen (N)-containing compounds in sediment can cause a relapse of black-odorous water bodies. Sediment?water ratio (SWR) and hydraulic residence time (HR... ver más
Revista: Water

 
Fatima Elayadi, Mounia Achak, Wafaa Boumya, Sabah Elamraoui, Noureddine Barka, Edvina Lamy, Nadia Beniich and Chakib El Adlouni    
This work highlights the elimination of chemical oxygen demand (COD) from olive mill wastewater using sugarcane bagasse. A 25-1 fractional factorial design of experiments was used to obtain the optimum conditions for each parameter that influence the ads... ver más
Revista: Water

 
Daniyar Uskenbaev, Adolf Nogai, Alisher Uskenbayev, Kairatbek Zhetpisbayev, Eleonora Nogai, Pavel Dunayev, Ainur Zhetpisbayeva and Artur Nogai    
In this paper influence of the excess Ca and Cu cations on the critical temperature (Tc) and critical transport current density (Jc) of high-temperature superconducting ceramics of the compositions (HTSC) Bi1.6Pb0.4Sr2Ca2.1Cu3.1Oy, Bi1.6Pb0.4Sr2Ca2.25Cu3... ver más
Revista: ChemEngineering