Environmental barrier coatings using low pressure plasma spray process

2020 ◽  
Vol 103 (9) ◽  
pp. 4840-4845
Author(s):  
Dianying Chen ◽  
Aaron Pegler ◽  
Mitch Dorfman
Keyword(s):  
Plasma Spray ◽  
Low Pressure ◽  
Barrier Coatings ◽  
Environmental Barrier Coatings ◽  
Environmental Barrier ◽  
Spray Process ◽  
Pressure Plasma ◽  
Plasma Spray Process ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Cavitation Erosion Resistance of Ti-Ni Intermetallic Coatings Prepared by Low Pressure Plasma Spray Process

2014 ◽  
Vol 1058 ◽  
pp. 265-269 ◽  
Author(s):  
Qiu Sheng Lin ◽  
Ke Song Zhou ◽  
Chun Ming Deng ◽  
Chang Guang Deng ◽  
Zi Qi Kuang ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Cavitation Erosion ◽  
Erosion Resistance ◽  
Low Pressure ◽  
Spray Process ◽  
Pressure Plasma ◽  
Plasma Spray Process ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Cavitation Erosion Resistance

In the current work, low pressure plasma spray process (LPPS) was applied to deposit Ti-Ni intermetallic coatings with Ni-clad Ti powder as feedstock. The microstructure and phase transition of LPPS sprayed Ti-Ni coating were investigated. Cavitation erosion resistance was examined using a standard ultrasonic cavitation test. The coating mainly consisted of TiNi phase with a certain amount of Ti2Ni, Ni3Ti phase and a few Ti phase. A few pores concentrated on the boundaries of the sprayed splats. The TiNi coating exhibited excellent cavitation erosion resistance.

High-velocity plasma spray process using hybrid SiO2 + ZrO2 precursor for deposition of environmental barrier coatings

2020 ◽  
Vol 404 ◽  
pp. 126447
Author(s):  
F.S. Miranda ◽  
F.R. Caliari ◽  
T.M. Campos ◽  
D.M.G. Leite ◽  
R.S. Pessoa ◽  
...  
Keyword(s):  
Plasma Spray ◽  
High Velocity ◽  
Barrier Coatings ◽  
Environmental Barrier Coatings ◽  
Environmental Barrier ◽  
Spray Process ◽  
Plasma Spray Process

Vapor Phase Deposition Using a Plasma Spray Process

2010 ◽  
Author(s):  
Konstantin von Niessen ◽  
Malko Gindrat
Keyword(s):  
Plasma Spraying ◽  
Thermal Spray ◽  
Vapor Phase ◽  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Low Pressure ◽  
Spray Process ◽  
Pressure Plasma ◽  
Low Pressure Plasma

Plasma spray - physical vapor deposition (PS-PVD) is a low pressure plasma spray technology recently developed by Sulzer Metco AG (Switzerland) to deposit coatings out of the vapor phase. PS-PVD is developed on the basis of the well established low pressure plasma spraying (LPPS) technology. In comparison to conventional vacuum plasma spraying (VPS) and low pressure plasma spraying (LPPS), these new process use a high energy plasma gun operated at a work pressure below 2 mbar. This leads to unconventional plasma jet characteristics which can be used to obtain specific and unique coatings. An important new feature of PS-PVD is the possibility to deposit a coating not only by melting the feed stock material which builds up a layer from liquid splats but also by vaporizing the injected material. Therefore, the PS-PVD process fills the gap between the conventional physical vapor deposition (PVD) technologies and standard thermal spray processes. The possibility to vaporize feedstock material and to produce layers out of the vapor phase results in new and unique coating microstructures. The properties of such coatings are superior to those of thermal spray and electron beam - physical vapor deposition (EB-PVD) coatings. In contrast to EB-PVD, PS-PVD incorporates the vaporized coating material into a supersonic plasma plume. Due to the forced gas stream of the plasma jet, complex shaped parts like multi-airfoil turbine vanes can be coated with columnar thermal barrier coatings using PS-PVD. Even shadowed areas and areas which are not in the line of sight to the coating source can be coated homogeneously. This paper reports on the progress made by Sulzer Metco to develop a thermal spray process to produce coatings out of the vapor phase. Columnar thermal barrier coatings made of Yttria stabilized Zircona (YSZ) are optimized to serve in a turbine engine. This includes coating properties like strain tolerance and erosion resistance but also the coverage of multiple air foils.

Preparation and characterization of aluminum-based coatings deposited by very low-pressure plasma spray

2019 ◽  
Vol 380 ◽  
pp. 125034 ◽  
Author(s):  
Xiujuan Fan ◽  
Geoffrey Darut ◽  
Marie Pierre Planche ◽  
Chen Song ◽  
Hanlin Liao ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Microstructure of 316L Stainless Steel Coating Deposited by the Low Pressure Plasma Spray

2014 ◽  
Vol 644-650 ◽  
pp. 4888-4891
Author(s):  
De Ming Yang ◽  
Bo Han Tian
Keyword(s):  
Stainless Steel ◽  
Plasma Spray ◽  
316L Stainless Steel ◽  
Low Pressure ◽  
Air Plasma ◽  
Pressure Plasma ◽  
Optical Micrograph ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma ◽  
Stainless Steel Coatings

Original equiaxed 316L stainless steel coatings were successfully deposited by the low pressure plasma spray. For comparison, the coatings of 316L stainless steel with normal lamellar structure were also prepared by the air plasma spray (APS). The microstructures were investigated using optical micrograph (OM). The results show that the microstructures of LPPS 316L stainless steel coatings reveal the fine equiaxed microstructures like the solidified stainless steels,which are significantly different from that of APS coatings with lamellar structures.

scholarly journals Fabrication of TiB2 Dispersed Fe-Cr Composite Coatings by Low Pressure Plasma Spray and Evaluation of Its Property

Shinku ◽  
2007 ◽  
Vol 50 (5) ◽  
pp. 394-397
Author(s):  
Masahiro FUKUMOTO ◽  
Takurou HAMADA ◽  
Motohiro YAMADA ◽  
Tosiaki YASUI
Keyword(s):  
Plasma Spray ◽  
Composite Coatings ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Oxidation Behavior of SiC Reinforced ZrB2 Composite Coating Prepared by Low Pressure Plasma Spray

2014 ◽  
pp. 481-486
Author(s):  
Cui Hu ◽  
Yaran Niu ◽  
Hong Li ◽  
Xuebin Zheng ◽  
Chuanxian Ding ◽  
...  
Keyword(s):  
Composite Coating ◽  
Plasma Spray ◽  
Oxidation Behavior ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

scholarly journals Application of low-pressure plasma-spray coatings.

1988 ◽  
Vol 39 (7) ◽  
pp. 382-387
Author(s):  
Yoshitaka KOJIMA ◽  
Hiroshi FUKUI ◽  
Naotatsu ASAHI
Keyword(s):  
Plasma Spray ◽  
Low Pressure ◽  
Spray Coatings ◽  
Pressure Plasma ◽  
Plasma Spray Coatings ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

scholarly journals Fabrication of Dense Gadolinia-Doped Ceria Coatings via Very-Low-Pressure Plasma Spray and Plasma Spray–Physical Vapor Deposition Process

Coatings ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 717 ◽  
Author(s):  
Jing Wen ◽  
Chen Song ◽  
Taikai Liu ◽  
Ziqian Deng ◽  
Shaopeng Niu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plasma Spray ◽  
Vapor Deposition ◽  
Physical Vapor Deposition ◽  
Low Pressure ◽  
Doped Ceria ◽  
Large Area ◽  
Pressure Plasma ◽  
Low Pressure Plasma Spray ◽  
Low Pressure Plasma

Gadolinia-doped ceria (GDC) is a promising electrolyte material for low-temperature solid oxide fuel cells (LT-SOFCs). Many works used ceramic sintering methods to prepare the GDC electrolyte, which was mature and reliable but presented difficulties in rapidly preparing a large area of GDC electrolyte without cracks. The low-pressure plasma spray (LPPS) process has the potential to solve this problem, but few studies have been conducted to date. In this work, submicron GDC powder was agglomerated by a spray drying method to achieve the proper granularity with D50 about 10 μm, and then two dense GDC coatings were fabricated with this agglomerated GDC powder using very-low-pressure plasma spray (VLPPS) and plasma spray–physical vapor deposition (PS-PVD), respectively. The results indicate that the two GDC coatings exhibited similar microstructure but with different densification mechanisms. The VLPPS coating was mainly built up in the form of liquid splats, which had lower mechanical properties due to the lower density and crystallinity, while the PS-PVD coating was co-deposited with the vapor clusters and liquid splats, which had higher density, crystallinity, and mechanical properties. It can therefore be concluded that the GDC coating prepared by PS-PVD is more appropriate for the LT-SOFC application.

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