Title: Wear characteristics of a combustion liner for power generation gas turbine

Authors: Ahmad Afiq Pauzi; Salmi Mohd. Yunus; Shuib Husin; Mariyam Jameelah Ghazali; Wan Fathul Hakim W. Zamri

Addresses: Materials Engineering Group, TNB Research Sdn. Bhd., Kawasan Institusi Penyelidikan dan Latihan, No. 1, Lorong Ayer Itam, Bangi, 43000 Kajang, Selangor, Malaysia ' Materials Engineering Group, TNB Research Sdn. Bhd., Kawasan Institusi Penyelidikan dan Latihan, No. 1, Lorong Ayer Itam, Bangi, 43000 Kajang, Selangor, Malaysia ' Materials Engineering Group, TNB Research Sdn. Bhd., Kawasan Institusi Penyelidikan dan Latihan, No. 1, Lorong Ayer Itam, Bangi, 43000 Kajang, Selangor, Malaysia ' Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, National University of Malaysia, 43000 UKM, Bangi, Malaysia ' Department of Mechanical and Materials Engineering, Faculty of Engineering and Built Environment, National University of Malaysia, 43000 UKM, Bangi, Malaysia

Abstract: Wear is the main degradation of the combustor components in gas turbine power generation. One of the most vital components in a gas turbine is the combustion liner which is often observed with severe wear damage. In this study, the combustion liner was made from Hastelloy X (a nickel-based superalloy material). The degradation generally occurred at the mating surfaces of the combustion liner which consisted of the fuel nozzle and a transition piece. The purpose of this study was to determine and characterise the dominant wear mechanisms at two different contact surfaces (connected to stainless steel and Nimonic 263) after being exposed to 8,000 hours of run time at high temperature and vibration. The worn surfaces were analysed and the wear mechanism was discussed.

Keywords: wear; combustion liner; power generation; gas turbine.

DOI: 10.1504/IJMPT.2018.092939

International Journal of Materials and Product Technology, 2018 Vol.57 No.1/2/3, pp.230 - 239

Accepted: 26 Nov 2017
Published online: 03 Jul 2018 *

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