B. Saeedi
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
B. Saeedi has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Alireza Sabour Rouhaghdam
Department of Materials Engineering, Faculty of Engineering, Tarbiat Modares University, P.O. Box: 14115-143, Tehran, Iran
2 shared publications - Akbar Khoddami
Department of Textile Engineering, Isfahan University of Technology, Isfahan, Iran
1 shared publication - G. Gholami
Tarbiat Modares University, Faculty of Engineering and Technology, Department of Materials Engineering
1 shared publication
Latest Publications
- 28 November 2018
- Published by Pleiades Publishing Ltd in Protection of Metals and Physical Chemistry of Surfaces
- Vol. 54 (6) , 1066-1075
Oxidation Behavior of Nanostructured Ni-5Al Coating. A case Study on Monophase Coatings
Oxidation behavior of nanostructured Ni-5Al HVOF coatings was studied. For this purpose, isothermal oxidation of the free standing coatings was performed at 950°C. Lattice parameter...
- 28 November 2018
- Published by Pleiades Publishing Ltd in Protection of Metals and Physical Chemistry of Surfaces
- Vol. 54 (6) , 1066-1075
Oxidation Behavior of Nanostructured Ni-5Al Coating. A case Study on Monophase Coatings
Oxidation behavior of nanostructured Ni-5Al HVOF coatings was studied. For this purpose, isothermal oxidation of the free standing coatings was performed at 950°C. Lattice parameter...
- 10 September 2009
- Published by Wiley in Materials and Corrosion
- Vol. 60 (9) , 695-703
Study of microstructure and thermal shock behavior of two types of thermal barrier coatings
Gas turbines provide one of the most severe environments challenging material systems nowadays. Only an appropriate coating system can supply protection particularly for turbine blades. This study was made by comparison of properties of two different types of thermal barrier coatings (TBCs) in order to improve the surface characteristics of high temperature components. These TBCs consisted of a duplex TBC and a five layered functionally graded TBC. In duplex TBCs, 0.35 mm thick yittria partially stabilized zirconia top coat (YSZ) was deposited by air plasma spraying and ∼0.15 mm thick NiCrAlY bond coat was deposited by high velocity oxyfuel spraying. ∼0.5 mm thick functionally graded TBC was sprayed by varying the feeding ratio of YSZ/NiCrAlY powders. Both coatings were deposited on IN 738LC alloy as a substrate. Microstructural characterization was performed by SEM and optical microscopy whereas phase analysis and chemical composition changes of the coatings and oxides formed during the tests were studied by XRD and EDX. The performance of the coatings fabricated with the optimum processing conditions was evaluated as a function of intense thermal cycling test at 1100 °C. During thermal shock test, FGM coating failed after 150 and duplex coating failed after 85 cycles. The adhesion strength of the coatings to the substrate was also measured. Finally, it is found that FGM coating has a larger lifetime than the duplex TBC, especially with regard to the adhesion strength of the coatings.
- 10 September 2009
- Published by Wiley in Materials and Corrosion
- Vol. 60 (9) , 695-703
Study of microstructure and thermal shock behavior of two types of thermal barrier coatings
Gas turbines provide one of the most severe environments challenging material systems nowadays. Only an appropriate coating system can supply protection particularly for turbine blades. This study was made by comparison of properties of two different types of thermal barrier coatings (TBCs) in order to improve the surface characteristics of high temperature components. These TBCs consisted of a duplex TBC and a five layered functionally graded TBC. In duplex TBCs, 0.35 mm thick yittria partially stabilized zirconia top coat (YSZ) was deposited by air plasma spraying and ∼0.15 mm thick NiCrAlY bond coat was deposited by high velocity oxyfuel spraying. ∼0.5 mm thick functionally graded TBC was sprayed by varying the feeding ratio of YSZ/NiCrAlY powders. Both coatings were deposited on IN 738LC alloy as a substrate. Microstructural characterization was performed by SEM and optical microscopy whereas phase analysis and chemical composition changes of the coatings and oxides formed during the tests were studied by XRD and EDX. The performance of the coatings fabricated with the optimum processing conditions was evaluated as a function of intense thermal cycling test at 1100 °C. During thermal shock test, FGM coating failed after 150 and duplex coating failed after 85 cycles. The adhesion strength of the coatings to the substrate was also measured. Finally, it is found that FGM coating has a larger lifetime than the duplex TBC, especially with regard to the adhesion strength of the coatings.