Effects of Processing Parameters in the SPPS and to Understand Their Implications and Improvization | Chapter 9 | Contemporary Perspective on Science, Technology and Research Vol. 9

The preliminary investigations have been carried out about the effects of processing parameters in the SPPS and to understand their implications and improving of this process. The thermal spray processes have been using the different kind of powder feed stocks such as for the coating. It has been widely used for various purposes like to protect from corrosion, improve durability and oxidation resistance properties at high temperature and it can reduce the metal service temperature.
 
The Solution Precursor Plasma Spray (SPPS) process has been used for Thermal Barrier Coatings (TBCs). In this work Zirconyle nitrate is used as solution precursor. It has prepared in house for plasma spray. The prepared solution has successfully deposited on the substrate by SPPS process.The deposited coatings were characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD). SEM observations showed significant effect of processing conditions on the microstructure of YSZ coatings. The prepared solution can be used for the surface coating.

Author(s) Details:

R. Sudarshan,
Geethanjali College of Engineering and Technology, Cheeryal (V), Keesara (M), RR Dist., Telangana, India.

Sriram Venkatesh,
University College of Engineering, Osmania University, Hyderabad, India.

K. Balasubramanian,
NonFerrous Materials Technology Development Centre, Kanchanbagh, Hyderabad, India.

Noundla Ramya,
NonFerrous Materials Technology Development Centre, Kanchanbagh, Hyderabad, India.

Please see the link here: https://stm.bookpi.org/CPSTR-V9/article/view/14201

Effects of Plasma Current on the Microstructure of Solution Precursor Plasma Spray YSZ Coatings | Chapter 1 | Contemporary Perspective on Science, Technology and Research Vol. 9

The investigations have been carried out for the effects of processing parameter (plasma current) in the SPPS and to understand their implications and improving of this process. Thermal spraying is an advanced materials processing technique which has found wide acceptance in many high technology industries. High temperature, high velocity flame is produced to heat, melt and spray material introduced into the flame. The Solution Precursor Plasma Spray (SPPS) process has been used for obtaining Zirconia coatings asThermal Barrier Coatings (TBCs). The solution precursor Plasma Spray (SPPS) was carried out using a robotic plasma spray system equipped with a liquid spray unit. The gun was connected to a 6 axis ABB robot for precession maneuvering. In this study an in house developed Zirconyle nitratesolution precursor plasma spray setup has been used. In this process the coating is built up by horizontal and vertical passes of the plasma torch across the substrate. The microstructural characterizations of coatings were carried out by scanning electron microscope (SEM) and X-ray diffraction (XRD). Significant effect of plasma current has been observed on the zirconia coatings.

Author(s) Details:

R. Sudarshan,
Geethanjali College of Engineering and Technology, Cheeryal(V), Keesara (M), RR Dist, Telangana, India.

Sriram Venkatesh,
University College of Engineering, Osmania University, Hyderabad, India.

K. Balasubramanian,
NonFerrous Materials Technology Development Centre, Kanchanbagh, Hyderabad, India.

P. Karuna purnapu Rupa,
NonFerrous Materials Technology Development Centre, Kanchanbagh, Hyderabad, India.

Please see the link here: https://stm.bookpi.org/CPSTR-V9/article/view/14166