Tribological Behavior of Atmospheric Plasma-Spray-Deposited Ni-Based Composite Coatings at Different Speeds and Temperatures

2020 ◽  
Vol 29 (4) ◽  
pp. 756-772
Author(s):  
Rohit Kumar Singh Gautam ◽  
U. S. Rao ◽  
Shashank Mishra ◽  
Rajnesh Tyagi
Keyword(s):  
Plasma Spray ◽  
Tribological Behavior ◽  
Composite Coatings ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma

Fabrication and Ablation Behavior of Plasma Sprayed ZrC-W Composite Coatings

2014 ◽  
Vol 602-603 ◽  
pp. 552-555
Author(s):  
Dan Lu ◽  
Ya Ran Niu ◽  
Xue Lian Ge ◽  
Xue Bing Zheng ◽  
Guang Chen
Keyword(s):  
Thermal Conductivity ◽  
Thermal Shock ◽  
Plasma Spray ◽  
Composite Coatings ◽  
Lamellar Microstructure ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Plasma Flame ◽  
Plasma Sprayed ◽  
Zrc Coating

In this work, atmospheric plasma spray (APS) technology was applied to fabricate ZrC-W composite coatings. The microstructure of the composite coatings was characterized. The influence of W content on the ablation-resistant and thermal shock properties of ZrC-W composite coatings was evaluated using a plasma flame. The results show that the ZrC-W composite coatings had typically lamellar microstructure, which was mainly made up of cubic ZrC, cubic W and a small amount of tetragonal ZrO2. The ZrC-W coatings had improved ablation resistant and thermal shock properties compared with those of the pure ZrC coating. It was supposed that the improved density, thermal conductivity and toughness of the composite coatings contributed to this phenomenon.

Preparation of Al/SiO2 Composite Coatings on the Surface of Aluminum Alloy through Atmospheric Plasma Spraying

2012 ◽  
Vol 560-561 ◽  
pp. 1041-1047
Author(s):  
Pei Hu Gao ◽  
Lei Li ◽  
Jian Ping Li ◽  
Zhong Yang ◽  
Yong Chun Guo
Keyword(s):  
Aluminum Alloy ◽  
Plasma Spray ◽  
Composite Powder ◽  
Silicon Oxide ◽  
Composite Coatings ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Composite Powders ◽  
Plasma Flame

In this work, Al/SiO2composite coatings were deposited on the surface of aluminum alloy through atmospheric plasma spray. The effects of SiO2volume in Al/SiO2composite powders on the deposition behavior were investigated. It was found that the deposition of the Al/SiO2composite powder became more difficult through plasma spray with the increasing of SiO2contents. There were reactions between aluminium and silicon oxide during the deposition of Al/SiO2powders in the plasma flame. The reactions were helpful to interface cohesions between aluminium and silicon oxide. Al/SiO2(60:40, 80:20) composites were more suitable for deposition and well interface cohesion through atmospheric plasma spray.

scholarly journals Mechanical Properties of Strontium–Hardystonite–Gahnite Coating Formed by Atmospheric Plasma Spray

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 759
Author(s):  
Duy Quang Pham ◽  
Christopher C. Berndt ◽  
Ameneh Sadeghpour ◽  
Hala Zreiqat ◽  
Peng-Yuan Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Plasma Spray ◽  
Elastic Moduli ◽  
Cell Attachment ◽  
Atmospheric Plasma Spray ◽  
Atmospheric Plasma ◽  
Wear Volume ◽  
Marrow Mesenchymal Stem Cells ◽  
Good Biocompatibility

In this work, we measured the mechanical properties and tested the cell viability of a bioceramic coating, strontium–hardystonite–gahnite (Sr–HT–G, Sr–Ca2ZnSi2O7–ZnAl2O4), to evaluate potential use of this novel bioceramic for bone regeneration applications. The evaluation of Sr–HT–G coatings deposited via atmospheric plasma spray (APS) onto Ti–6Al–4V substrates have been contrasted to the properties of the well-known commercial standard coating of hydroxyapatite (HAp: Ca10(PO4)6(OH)2). The Sr–HT–G coating exhibited uniform distribution of hardness and elastic moduli across its cross-section; whereas the HAp coating presented large statistical variations of these distributions. The Sr–HT–G coating also revealed higher results of microhardness, nanohardness and elastic moduli than those shown for the HAp coating. The nanoscratch tests for the Sr–HT–G coating presented a low volume of material removal without high plastic deformation, while the HAp coating revealed ploughing behaviour with a large pileup of materials and plastic deformation along the scratch direction. Furthermore, nanoscanning wear tests indicated that Sr–HT–G had a lower wear volume than the HAp coating. The Sr–HT–G coating had slightly higher cell attachment density and spreading area compared to the HAp coating indicating that both coatings have good biocompatibility for bone marrow mesenchymal stem cells (BMSCs).

Sign in / Sign up

Export Citation Format

Share Document