Influence of NbC-doping on the microstructure and thermo-mechanical properties of tungsten coating fabricated by supersonic atmospheric plasma spraying

2020 ◽  
Vol 394 ◽  
pp. 125823 ◽  
Author(s):  
Qing Yu Hou ◽  
Hua Qin Huang ◽  
Deng Hu Zhou ◽  
Ping Wang ◽  
Qian Xie ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Tungsten Coating ◽  
Supersonic Atmospheric Plasma Spraying

Properties of tungsten coating deposited onto copper by high-speed atmospheric plasma spraying

2011 ◽  
Vol 414 (1) ◽  
pp. 8-11 ◽  
Author(s):  
Huang Jianjun ◽  
Wang Fan ◽  
Liu Ying ◽  
Jiang Shishou ◽  
Wang Xisheng ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
High Speed ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Tungsten Coating

scholarly journals Ablation mechanism and morphology evolution of the HfC-SiC coating for C/C composites deposited by supersonic atmospheric plasma spraying

2019 ◽  
Vol 28 ◽  
pp. 096369351986994 ◽  
Author(s):  
Yang Yang ◽  
Kezhi Li ◽  
Chun Zhao
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Carbon Composites ◽  
X Ray Diffraction ◽  
Ablation Resistance ◽  
Ablation Mechanism ◽  
Coated Carbon ◽  
Supersonic Atmospheric Plasma Spraying ◽  
New Phase

HfC-SiC protective coating was deposited on the surface of SiC-coated carbon/carbon composites by supersonic atmospheric plasma spraying due to the high arc temperature and the efficient deposition rate. The morphology and microstructure of the HfC-SiC coating were analyzed by X-ray diffraction and scanning electron microscopy. The results showed that Hf and Si elements distributed uniformly in the coating and the coating was dense without crack. Ablation resistance test was processed by oxyacetylene torch. During the ablation process, the sintering rate of HfO2 was slow, and more oxygen diffused into the internal coating, which caused the oxidation of the internal coating and damaged the structure of internal coating in the ablation center region. In addition, during cooling process, a new phase HfSiO4 was generated by the reaction between HfO2 and SiO2, which acted as a pinning agent to prevent the further expansion of the crack.

Lanthanum hydride doped tungsten-based coating fabricated by supersonic atmospheric plasma spraying

2016 ◽  
Vol 299 ◽  
pp. 153-161 ◽  
Author(s):  
Qing Yu Hou ◽  
Lai Ma Luo ◽  
Zhen Yi Huang ◽  
Ping Wang ◽  
Ting Ting Ding ◽  
...  
Keyword(s):  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Supersonic Atmospheric Plasma Spraying

scholarly journals Investigations of microstructure and selected mechanical properties of Al2O3 + 40 wt.% TiO2 coatings deposited by Atmospheric Plasma Spraying (APS)

2019 ◽  
Vol 91 (8) ◽  
pp. 7-11 ◽  
Author(s):  
Monika Michalak ◽  
Leszek Łatka ◽  
Paweł Sokołowski ◽  
Andrzej Ambroziak
Keyword(s):  
Mechanical Properties ◽  
Stainless Steel ◽  
Plasma Spraying ◽  
Atmospheric Plasma Spraying ◽  
Atmospheric Plasma ◽  
Good Adhesion ◽  
Spraying Parameters ◽  
Tio2 Coatings

Atmospheric Plasma Spraying (APS) enables deposition of coatings from different materials, including those based on Al2O3 and TiO2. In this work, Al2O3 + 40 wt.% TiO2 coatings were tested. The relationships between mechanical properties, microstructure and spraying parameters (namely: spraying distance and torch scan velocity) were investigated. Commercial -45 + 5 μm powders in agglomerated as- produced state were sprayed onto the stainless steel 1.4301 substrates. The aim of the study was to determine the adhesion, microhardness and roughness of coatings but also to characterize their microstructure. It was observed that coatings sprayed from shorter distance were well melted and revealed good adhesion, but at the same time they were more porous and of lower microhardness than those deposited from the longer spraying distance.

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