High Temperature Thermal Properties of Columnar Yttria Stabilized Zirconia Thermal Barrier Coating Performed by Suspension Plasma Spraying

Bernard, Benjamin; Schick, Vincent; Rémy, Benjamin; Quet, Aurélie; Bianchi, L.

doi:10.1088/1742-6596/745/3/032012

Cited by 4 publications

(2 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was found, that YSZ coatings for TBC application produced via SPS exhibit relatively low thermal conductivity in high temperatures. For example in [71] thermal conductivity values were below 1 W/m•K in the temperature range from RT up to 1100ºC. On the other hand, in case of axial injection mode at room temperature values of thermal conductivity are in the range from 0.5 to 0.8 W/m•K, but it was found in one coating even 0.3 W/m•K, what extremely low value for YSZ.…”

Section: Mechanical and Thermal Properties Of Sps Coatingsmentioning

confidence: 90%

Thermal Barrier Coatings Manufactured by Suspension Plasma Spraying - A Review

Łatka

2018

Advances in Materials Science

View full text Add to dashboard Cite

Thermal barrier coatings (TBC) is one of the most intensively studied of coatings’ applications area. From 1970’s TBC are developed in two independent ways: (i) development in new materials, with lower thermal conductivity, better erosion resistance and better thermal shock resistance or (ii) development in new deposition techniques. On this field besides conventional atmospheric plasma spraying (APS) and almost conventional (because of very common use) EB-PVD method, in the past 20 years two new techniques have been developed, namely suspension plasma spraying (SPS) and solution precursor plasma spraying (SPPS). In this paper only SPS method was described, as well as, new materials, which could be used in industrial applications of TBC. Moreover, the key issues, like suspension preparation, type of suspension injection, interaction between liquid droplets and plasma jet and deposition mechanism were described.

show abstract

Section: Mechanical and Thermal Properties Of Sps Coatingsmentioning

confidence: 90%

Thermal Barrier Coatings Manufactured by Suspension Plasma Spraying - A Review

Łatka

2018

Advances in Materials Science

View full text Add to dashboard Cite

show abstract

“…Literature data [9,[11][12][13] and the results of our own research [14,15] indicate that in both processes, viz., PS-PVD and SPS, it is possible to deposit a ceramic coating with good thermal and physical properties using YSZ powder with small particle sizes (<10 µm). It is also possible to control its porosity [16,17] and obtain thermal conductivity values similar to coatings obtained with APS [18,19]. Several studies [11,20] have also found that the coatings obtained with PS-PVD and SPS are characterized by higher erosion resistance and resistance to high-temperature oxidation and thermal fa-tigue compared to the layers in the EB-PVD process, which are characterized by particularly high costs.…”

Section: Introductionmentioning

confidence: 99%

Influence of air plasma spraying process parameters on the thermal barrier coating deposited with micro- and nanopowders

Kubaszek

Góral

Pędrak

2022

Materials Science-Poland

View full text Add to dashboard Cite

This study investigates the optimal conditions to deposit a thermal barrier coating using micro- and nanopowders in the air plasma spraying (APS) process. The influence of the APS process parameters on the thickness, porosity and hardness of the yttria-stabilized zirconia (YSZ; ZrO2 × 8Y2O3) coatings deposited with a single-electrode plasma gun was determined. The temperature and velocity of melted particles were determined by the DPV diagnostic system to decrease the number of experimental processes. The current and H2 flow rate were changed in this research. Metco-6700 YSZ micropowder has already been used in plasma spray physical vapor deposition. The results of this study suggest the possibility of using it for APS. The particles of this powder are characterized by high temperature (2,700°C–2,900°C) and high speed (>380 m/s). The highest thickness of the coating was obtained with 6 NLPM (normal liter per minute) H2 flow and 800 A current. Difficulties were observed with the feeding of the powder particles at higher H2 flow. The results showed that using APS, deposition of Metco-6609, a nanopowder normally used in suspension plasma spraying, is possible. In this research, this powder was fed using a carrier gas. The coatings were around 40 μm thick and had high porosity. The lowest porosity of the coating was obtained at a current of 600 A and H2 flow rate of 12 NLPM. In the coatings, unmelted spherical particles were also visible.

show abstract

Laser milling of yttria-stabilized zirconia by using a Q-switched Yb:YAG fiber laser: experimental analysis

Guarino

Ponticelli

Giannini

et al. 2017

Int J Adv Manuf Technol

View full text Add to dashboard Cite

The present investigation deals with laser milling process of yttria-stabilized zirconia (YSZ), by using a Q-switched 30 W Yb:YAG fiber laser. First, the influence of laser operational parameters, laser beam scan speed, the number of time, and the sample surface is worked (number of repetition) and the scanning strategy was investigated. This first step allowed to identify the most suitable processing window in terms of surface quality and machined depth. Then, a systematic approach based on full factorial design of experiment was developed and successfully adopted to identify and explain the effect of each operational parameter on laser–material interaction and on the process outputs: roughness, machined depth, and material removal rate. The experimental results demonstrate that the laser treatment is suitable for YZS highlighting high repeatability, process accuracy, short machining time, and the possibility to easily control the process outputs

show abstract

High Temperature Thermal Properties of Columnar Yttria Stabilized Zirconia Thermal Barrier Coating Performed by Suspension Plasma Spraying

Cited by 4 publications

References 16 publications

Thermal Barrier Coatings Manufactured by Suspension Plasma Spraying - A Review

Thermal Barrier Coatings Manufactured by Suspension Plasma Spraying - A Review

Influence of air plasma spraying process parameters on the thermal barrier coating deposited with micro- and nanopowders

Laser milling of yttria-stabilized zirconia by using a Q-switched Yb:YAG fiber laser: experimental analysis

Contact Info

Product

Resources

About