High-Temperature Erosion Resistance of FeBSiNb Amorphous Coatings Deposited by Arc Spraying for Boiler Applications

2012 ◽  
Vol 22 (5) ◽  
pp. 820-827 ◽  
Author(s):  
J. B. Cheng ◽  
X. B. Liang ◽  
Y. X. Chen ◽  
Z. H. Wang ◽  
B. S. Xu
Keyword(s):  
High Temperature ◽  
Erosion Resistance ◽  
Arc Spraying ◽  
High Temperature Erosion ◽  
Amorphous Coatings

Advanced High Temperature Erosion Tunnel for Testing TBC and New Turbine Blade Materials

2016 ◽  
Author(s):  
Dongyun Shin ◽  
Awatef Hamed
Keyword(s):  
High Temperature ◽  
Erosion Resistance ◽  
Experimental Investigations ◽  
Synthetic Fuels ◽  
Erosion Rates ◽  
Different Temperatures ◽  
Tunnel Design ◽  
Plasma Sprayed ◽  
The University ◽  
High Temperature Erosion

Current elevated turbine inlet temperatures were made possible by the development of blade thermal barrier coatings (TBCs). However the effectiveness of these coatings could be compromised by erosive particles ingested into the engine with the incoming air or generated by the combustion of heavy and synthetic fuels. Reliable test facilities are essential to characterize their erosion resistance in increased test temperatures. This paper provides a detailed description of an advanced high temperature erosion tunnel capable of testing at temperature of 1370 °C (2500 °F) that has been recently constructed and installed in the University of Cincinnati Gas Turbine Erosion Lab. The paper also presents an overview of both theoretical and experimental investigations dealing with the new high temperature erosion tunnel design optimization and validation with comparisons to our legacy erosion tunnels. Results are presented for tested standard plasma sprayed 7 wt% Yttria stabilized Zirconia (7YSZ) TBC coated samples’ erosion rates at different temperatures, particle impact velocities and impingement angles.

scholarly journals Study on High-temperature Erosion Resistance of Precursor Ceramic Coatings

2020 ◽  
Vol 474 ◽  
pp. 052082
Author(s):  
Songjie Yang ◽  
Jinqing Wang ◽  
Guangxin Wang ◽  
Shiqi Tong ◽  
Zhimeng Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Erosion Resistance ◽  
Ceramic Coatings ◽  
High Temperature Erosion

scholarly journals Effect of C Content on High Temperature Erosive Wear Characteristics of Fe-Based V Containing Multi-Component Cast Steel with Ni

2018 ◽  
Vol 925 ◽  
pp. 400-407 ◽  
Author(s):  
Kazumichi Shimizu ◽  
Kenta Kusumoto ◽  
Kimitoshi Nakamura ◽  
Shoji Kiguchi ◽  
Masato Shirai ◽  
...  
Keyword(s):  
High Temperature ◽  
Erosion Rate ◽  
Erosion Resistance ◽  
Cast Steel ◽  
Erosive Wear ◽  
Test Machine ◽  
Wear Property ◽  
Erosion Behavior ◽  
High Temperature Erosion ◽  
Hot Hardness

Hot hardness and oxidation property of target material influences greatly on the erosion behavior at elevated temperature. The correlation between hot hardness and oxidation property of multi component white cast irons and its erosion resistance were investigated, and try to estimate the high temperature erosion behavior in the study. Nine kinds of multi component white cast iron and cast steel were used in this study. Specimen were machined into a flat plate with dimension of 50×50×10 mm. High temperature erosion test machine was used to investigate the erosive wear property of experimental materials at 1173K. Alumina grits (average diameter: 1.16 mm, hardness: 1250 HV1) which were used as impact particles were heated to 1073K and shoot on the heated specimen by hot air at the velocity of 100 m/s. The total particle loading was 2 kg. In order to clarify the correlation of hot hardness, oxidation property and the erosion resistance of specimens, hot hardness test was carried out specimens, to estimate erosion damage caused by solid particle. Hot hardness of specimens showed a value comparable to 200～250HV1. Result of erosion and oxidation tests, erosion rate and amount of oxidation of the specimen were suppressed by Ni addition. It suggested that the more amount of Ni contents, the lower the erosion rate and the less the amount of oxidation.

Erosion Wastage at High Temperature for Arc Spraying Coatings

2008 ◽  
Vol 373-374 ◽  
pp. 605-608
Author(s):  
J.Z. Hu ◽  
Shi Ning Ma ◽  
X.R. Chen
Keyword(s):  
High Temperature ◽  
Erosion Resistance ◽  
Resistance Rate ◽  
Arc Spraying ◽  
Impingement Angle ◽  
Power Station ◽  
Cored Wire ◽  
Intermetallic Coating ◽  
New Novel ◽  
Power Station Boiler

A new novel cored wire for producing FeCrAl/WC intermetallic coating by arc spraying was developed. The erosion wastage at high temperature of the coating was researched with different impingement angles and temperatures. The results indicated that impingement angle and temperature greatly affected erosion wastage of the coating. At the same time, when impingement angle was 90°, different temperature had a little effect on the erosion wastage. And when temperature was 650°C, different impingement angle had a little effect on the erosion wastage too. As compared with water wall tube material (G20 steel) of power station boiler, the erosion resistance at high temperature of the coating was higher. The erosion resistance rate of the coating was 1.94~2.89 times of that of G20 steel when temperature was 650°C and particle was polygonal silica. The results indicated that erosive condition of high temperature flue gas and fly ash mixture in boiler tube of pulverized coal fired power station could be solved with the FeCrAl/WC coating.

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