The Role of Thermal Spray Coating to Combat Hot corrosion of Boiler Tubes: A Study

2020 ◽  
Vol 14 (5) ◽  
Keyword(s):  
Thermal Spray ◽  
Hot Corrosion ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Boiler Tubes

scholarly journals KETAHANAN MULUR BAJA SUS 304 HASIL PELAPISAN METAL MATRIX COMPOSITE NiCr+ Cr3C2 DENGAN METODA HVOF

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Muhammad Luthfi Naufal ◽  
Muhammad Waldi ◽  
Djoko Hadi Prajitno
Keyword(s):  
Metal Matrix Composite ◽  
Thermal Spray ◽  
Matrix Composite ◽  
Metal Matrix ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
High Velocity Oxygen Fuel ◽  
Hvof Thermal Spray ◽  
Boiler Tubes ◽  
Oxygen Fuel

KETAHANAN MULUR DAN OKSIDASI SIKLIK BAJA SUS 304 HASIL PELAPISAN METAL MATRIX COMPOSITE NiCr+Cr3C2 DENGAN METODA HVOF. Telah dilakukan proses deposisi Metal Matrix Composite coating 60% NiCr + 30% Cr3C2+ 10% Al2O3 dan 60% NiCr + 40% Cr3C2 dengan menggunakan teknik High Velocity Oxygen Fuel (HVOF) Thermal Spray Coating, pada permukaan baja SUS 304. Tujuan pelapisan untuk meningkatkan ketahanan mulur dan oksidasi siklik dalam aplikasi pipa boiler tubes PLTU. Pengujian creep telah dilakukan pada temperatur 550oC dengan pembebanan sebesar 0.4 σy dan 0.6 σy (yield strength) selama 30240 menit (21 hari). Pengujian oksidasi siklik dengan variasi temperatur 600oC, 700oC dan 800oC selama 1 jam dalam tubes furnace dan pendinginan diluar selama 15 menit dalam 1 siklus dan di lakukan sebanyak 5 siklus. Spesimen coating Metal Matrix Composite (MMC) 3 komponen  merupakan coating yang rekomendasikan dalam aplikasi pipa boiler tubes PLTU merupakan laju mulur yang paling rendah sebesar 0.000148917%/jam. Spesimen coating MMC 3 komponen pada temperatur 600oC memiliki perubahan berat oksida, ketebalan coating, dan senyawa oksida yang terbentuk paling rendah.Kata kunci: SUS 304, HVOF Thermal Spray Coating, Metal Matrix Composite, ketahanan mulur, oksidasi siklik.

scholarly journals Current Status of Prevention of Hot Corrosion of Boiler Steels with Thermal Spray Coating

2018 ◽  
Vol 7 (2) ◽  
pp. 121-126
Author(s):  
Gurdeep Singh ◽  
Indermeet Singh ◽  
Khushdeep Goyal
Keyword(s):  
Thermal Spray ◽  
Hot Corrosion ◽  
Operating Temperature ◽  
Thermal Power ◽  
Operating Cost ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Current Status ◽  
Steel Alloys ◽  
Boiler Steels

In the thermal power plant, various conventional steels are used to manufacture boiler components. Due to high operating temperature of these boilers, these conventional steels are unable to resist hot corrosion. In recent years researchers have used various techniques to resist hot corrosion out of these techniques, thermal spray coating process have gained lot of interest due to the ease of coating, low operating cost, and various other advantages. With these coating processes a thin layer of coating material is developed over steel alloys surface which creates hindrance to penetration of corroding element and hereby reduce corrosion. This paper is an attempt to present a comprehension the study related to hot corrosion of thermal spray coating on boiler steels at high temperatures.

Effect of thermal cycle on Ni–Cr based nanostructured thermal spray coating in boiler tubes

2015 ◽  
Vol 25 (5) ◽  
pp. 1533-1542 ◽  
Author(s):  
V. SENTHILKUMAR ◽  
B. THIYAGARAJAN ◽  
M. DURAISELVAM ◽  
K. KARTHICK
Keyword(s):  
Thermal Spray ◽  
Thermal Cycle ◽  
Spray Coating ◽  
Thermal Spray Coating ◽  
Boiler Tubes
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