Characterisation of in-situ reactive plasma-sprayed nano-(Ti, V)N composite ceramic coatings with various V concentrations

2020 ◽  
Author(s):  
Yilin Lv ◽  
YunLong Chi ◽  
XinYe Mao ◽  
MingMing Xue ◽  
Yanchun Dong ◽  
...  
Keyword(s):  
Composite Ceramic ◽  
Ceramic Coatings ◽  
Reactive Plasma ◽  
Plasma Sprayed

Reactive Plasma Spray

2018 ◽  
pp. 299-332
Author(s):  
Mohammed Shahien
Keyword(s):  
High Temperature ◽  
Thermal Spraying ◽  
Ceramic Coatings ◽  
Reactive Plasma Spray ◽  
In Situ Fabrication ◽  
Reactive Plasma Spraying ◽  
Reactive Plasma ◽  
Nitride Coatings ◽  
Promising Solution

Thermal spraying is a well-known coating technology with many variations in spraying techniques, feedstock materials and substrate materials. These unique variations increased its industrial applicability in different fields, including aerospace, automotive, chemical process, corrosion protection, and medical applications. However, one of the main limitations of thermal spray is the difficulty of depositing several nitride ceramics directly using conventional techniques. This is due to the decomposition of nitride particles under high temperature without a stable melting phase. This chapter presents reactive plasma spraying (RPS) technology as a promising solution for the in situ fabrication of several nitride ceramic coatings. The main attractive prospects of RPS for fabricating nitride coatings are specifically highlighted. Successful development of various high-temperature nitride coatings, such as AlN, Fe4N and Si3N4, are presented. Process optimization, the relationship between reaction and process parameters and the influence on coatings formation are comprehensively discussed.

Microstructure and tribological properties of in-situ synthesized TiC reinforced reactive plasma sprayed Co-based coatings

2020 ◽  
Vol 248 ◽  
pp. 122913 ◽  
Author(s):  
Jining He ◽  
Gaofeng Zheng ◽  
Fangfang Guo ◽  
Guanya Fu ◽  
Chao Li ◽  
...  
Keyword(s):  
Tribological Properties ◽  
Reactive Plasma ◽  
Plasma Sprayed

High temperature microwave absorbing properties of plasma sprayed La0.6Sr0.4FeO3-δ/MgAl2O4 composite ceramic coatings

2020 ◽  
Vol 46 (5) ◽  
pp. 6168-6173
Author(s):  
Hongyao Jia ◽  
Wancheng Zhou ◽  
Hanyi Nan ◽  
Yuchang Qing ◽  
Fa Luo ◽  
...  
Keyword(s):  
High Temperature ◽  
Composite Ceramic ◽  
Ceramic Coatings ◽  
Microwave Absorbing Properties ◽  
Microwave Absorbing ◽  
Plasma Sprayed

Formation mechanism of supersonic plasma-sprayed nanostructured composite ceramic coatings

Vacuum ◽  
2015 ◽  
Vol 117 ◽  
pp. 40-46 ◽  
Author(s):  
Li Lin ◽  
Jia-jie Kang ◽  
Tian-shun Dong ◽  
Guo-lu Li ◽  
Hai-dou Wang ◽  
...  
Keyword(s):  
Formation Mechanism ◽  
Composite Ceramic ◽  
Ceramic Coatings ◽  
Nanostructured Composite ◽  
Supersonic Plasma ◽  
Plasma Sprayed

One-Step Approach for the Fabrication and Characterization of Hydroxyapatite/TiO2 Composite Ceramic Coatings by Micro-Arc Oxidation In Situ on the Surface of Pure Titanium

2014 ◽  
Vol 602-603 ◽  
pp. 598-601 ◽  
Author(s):  
Wu Chao Shi ◽  
Li Min Dong ◽  
Qiang Li ◽  
Chen Wang ◽  
Tong Xiang Liang ◽  
...  
Keyword(s):  
Pure Titanium ◽  
Composite Ceramic ◽  
Ceramic Coatings ◽  
Image Analysis System ◽  
Thickness Gauge ◽  
Mixed Electrolyte ◽  
Micro Arc Oxidation ◽  
One Step ◽  
Analysis System

The hydroxyapatite (HA)/ TiO2composite ceramic coatings were formed by micro-arc oxidation (MAO) on pure titanium in mixed electrolyte of calcium glycerophosphate and calcium acetate with DC pulse power. Microstructure, phase composition, porosity and thickness of the coatings were examined using SEM, XRD, Image-Pro Plus 6.0 Image analysis system and Eddy current thickness gauge. Results indicate that MAO coatings containing calcium and phosphorus were formed in situ on pure titanium surface. Pores formed by the discharge channels distribute uniformly on the coatings surface, and the inner layer is dense. The principal crystalline phases of the MAO coatings are anatase TiO2, rutile TiO2, HA, Ca3(PO4)2and matrix Ti. The interface is metallurgical bonding and the bonding strength is strong. And reaction time makes a greater influence than voltage in thickness and voltage makes a greater influence than time in porosity.

scholarly journals Microstructure and Mechanical Properties of TiC/TiB Composite Ceramic Coatings In-Situ Synthesized by Ultrasonic Vibration-Assisted Laser Cladding

Coatings ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 99
Author(s):  
Hangbiao Mi ◽  
Tao Chen ◽  
Zixin Deng ◽  
Shengchen Li ◽  
Jian Liu ◽  
...  
Keyword(s):  
Ultrasonic Vibration ◽  
Laser Cladding ◽  
Ceramic Coating ◽  
Composite Ceramic ◽  
Ceramic Coatings ◽  
Residual Tensile Stress ◽  
Micro Hardness ◽  
Metallurgical Bonding ◽  
Laser Cladding Process

Laser cladding coating has many advantages in surface modification, such as a small heat-affected zone, and good metallurgical bonding. However, some serious problems such as pores, and poor forming quality still exist in the coating. To suppress these problems, a novel process of ultrasonic vibration-assisted laser cladding process was adopted to in-situ synthesize TiC/TiB composite ceramic coating on the surface of titanium alloy. Results showed that the introduction of ultrasonic vibration effectively improved the surface topography of the coating, reduced the number of pores in the coating, refined the crystal grains of the coating, decreased the residual tensile stress in the coating, and increased the micro-hardness of the coating. The tribological properties of the coating were significantly improved by the ultrasonic vibration, the wear resistance of the coating fabricated with ultrasonic vibration at power of 400 W increased about 1.2 times compared with the coating fabricated without ultrasonic vibration, and the friction coefficient decreased by 50%.

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