V. Praveen Kumar

National Aerospace Laboratories

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Harish C. Barshilia

National Aerospace Laboratories

Venkataramana Bonu

National Aerospace Laboratories

M. Jeevitha

National Aerospace Laboratories

Siju

National Aerospace Laboratories

Chenan Arunchandran

Central Electrochemical Research Institute

Chandrabhas Narayana

Jawaharlal Nehru Centre for Advanced Scientific Research

Sandip Bysakh

Central Glass and Ceramic Research Institute

J.S. John Tizzile

Central Electrochemical Research Institute

G. Srinivas

National Aerospace Laboratories

Cooperative Institutions

National Aerospace Laboratories

Council of Scientific and Industrial Research

Indian Institute of Science Bangalore

Central Electrochemical Research Institute

Bangalore University

Mother Teresa Women's University

Institute of Minerals and Materials Technology

Jawaharlal Nehru Centre for Advanced Scientific Research

Rajiv Gandhi Centre for Biotechnology

Elettra-Sincrotrone Trieste S.C.p.A.

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Energy absorbing nano-porous Ti layers assisted erosion-corrosion resistant Ti/TiN multi-layered coatings for gas turbine compressor blades

Surface and Coatings Technology (2024)

Venkataramana Bonu M. Jeevitha J.S. John Tizzile Chenan Arunchandran V. Praveen Kumar

Conversion coating

10.1016/j.surfcoat.2024.130526

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Citations (2)

Nanolayered multilayer Ti/TiN coatings: Role of bi-layer thickness and annealing on solid particle erosion behaviour at elevated temperature

Surface and Coatings Technology (2018)

Venkataramana Bonu M. Jeevitha V. Praveen Kumar Harish C. Barshilia

10.1016/j.surfcoat.2018.10.007

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Citations (51)

Role of bonding nature on the temperature dependent erosion behavior of solid materials: A detailed high temperature Raman spectroscopic analysis

Journal of Applied Physics (2020)

Venkataramana Bonu V. Praveen Kumar Chandrabhas Narayana Harish C. Barshilia

Solid particle erosion is an unavoidable problem for gas turbine compressor blades, wind turbines, crude oil pipes, rovers in outer space, and other machine components operated in harsh conditions. Gas turbine components are usually operated in the temperature range of 100–1400 °C. However, the influence of temperature on the solid particle erosion mechanism has not been studied adequately. In this paper, the influence of temperature on the solid particle erosion properties of metals (Ti6Al4V, SS 304, Al-8011, and Ti/TiN multilayers) and non-metals (Al2O3, fused quartz, and Si) is studied. The erosion tests were conducted in the temperature range of 30–800 °C. The erosion rate of metallic and ionic solids (viz., Ti6Al4V, SS 304, Al-8011, Al2O3, and Ti/TiN multilayers with the thermal expansion coefficient α ≥ 8 μm/°C) initially decreased with increasing temperature and then increased at higher temperatures, whereas for covalently bonded materials such as fused quartz (α = 0.55 μm/°C) and Si (α = 2.6 μm/°C), the erosion rate increased with increasing temperature. As the temperature increases, it causes lattice vibrations and bond flexibility to increase the high thermal expansion coefficient materials due to their non-directional ionic or metallic bonds. It helps these materials to absorb the erodent energy without much damage, whereas the same does not happen in the case of low thermal expansion coefficient materials due to their strong directional covalent bonding. Temperature dependent Raman spectroscopic studies were carried out to understand the lattice vibrations and phase changes during heating.

Atmospheric temperature range

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Ionic radius

10.1063/5.0007731

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Citations (7)

Ultra-thin multilayered erosion resistant Ti/TiN coatings with stress absorbing layers

Applied Surface Science (2019)

Venkataramana Bonu M. Jeevitha V. Praveen Kumar Sandip Bysakh Harish C. Barshilia

Brittleness

10.1016/j.apsusc.2019.02.012

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