High Temperature Erosion-Corrosion of Wear Protection Materials

ABSTRACTNewly discovered MAX phases are attractive due to their unique combined properties: mechanical, high temperature, erosion and corrosion resistance. These materials are considered metallic and ceramic at the same time, and they could be the perfect solution for a variety of industrial and scientific applications. In this study, detailed attention has been paid to complex compositions of several transition metals, such as Ti and Cr in TiCrSiCN, whereas Al and Si are recommended for TiAlSiCN. These materials require a combination of both C and N to form the MAX phases (in the “X” position in the formula M(n+1)AXn). The purpose of this study was to investigate the effect of these elements located at the “M”, “A” and “X” positions on the mechanical properties of the materials. The results of the thermogravimetric analysis of TiCrSiCN showed that this phase is stable at temperatures as high as 1400 °C, while the Ti3SiC2 phase is stable up to 1300 °C.

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High Temperature Erosion-Corrosion in Gas Turbines

Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources; General ◽

10.1115/82-gt-204 ◽

1982 ◽

Author(s):

J. Stringer

Keyword(s):

High Temperature ◽

Gas Turbines ◽

High Temperature Oxidation ◽

Metal Loss ◽

Protective Oxide ◽

Temperature Oxidation ◽

Oxidation Processes ◽

Erosion Corrosion ◽

Burning Coal ◽

High Temperature Erosion

Under certain circumstances, hot gases containing particulates may be expanded through a turbine. The erosion damage due to the particulates interacts with the high temperature oxidation processes. The interaction may be positive: the oxide layer may be more erosion-resistant than the substrate. The interaction may be negative: the erosion can remove the protective oxide resulting in accelerated metal loss. If the gases contain corrosive materials such as alkali sulfates as well as the particulates, further interactions are possible. These processes are of importance in gas turbine expanders for pressurized fluidized bed combustors burning coal, and several research projects are in progress to study them.

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Observations on the role of oxide scales in high-temperature erosion-corrosion of alloys

Oxidation of Metals ◽

10.1007/bf00655896 ◽

1986 ◽

Vol 25 (3-4) ◽

pp. 175-199 ◽

Cited By ~ 50

Author(s):

I. G. Wright ◽

V. Nagarajan ◽

J. Stringer

Keyword(s):

High Temperature ◽

Oxide Scales ◽

Erosion Corrosion ◽

High Temperature Erosion

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High-temperature erosion-corrosion of alloys. Final report. [Haynes 188; Inconel MA754; Haynes 8077 and EB]

10.2172/5131926 ◽

1980 ◽

Author(s):

I. Wright ◽

R. Herchenroeder

Keyword(s):

High Temperature ◽

Final Report ◽

Erosion Corrosion ◽

High Temperature Erosion

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G0401-2-1 A Study of behavior of High-Temperature Erosion/Corrosion of Co based Alloy

The proceedings of the JSME annual meeting ◽

10.1299/jsmemecjo.2009.1.0_251 ◽

2009 ◽

Vol 2009.1 (0) ◽

pp. 251-252

Author(s):

Akira Iwabuchi ◽

Akihiko Chiba ◽

Shuji Hirako ◽

Keiji Yanagihara

Keyword(s):

High Temperature ◽

Erosion Corrosion ◽

High Temperature Erosion

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Improvement of the High-Temperature Erosion-Corrosion Resistance of Incoloy 800 by Cladding of 25.35.4CNB Reinforced by SiC

Materials Science Forum ◽

10.4028/www.scientific.net/msf.696.242 ◽

2011 ◽

Vol 696 ◽

pp. 242-247

Author(s):

P. Promdirek ◽

Somrerk Chandra-ambhorn ◽

S. Thongkasem ◽

N. Kanchanasin ◽

N. Walla

Keyword(s):

Particle Size ◽

Corrosion Resistance ◽

High Temperature ◽

Base Alloy ◽

Cladding Layer ◽

Sic Particles ◽

Erosion Corrosion ◽

Incoloy 800 ◽

Weld Cladding ◽

High Temperature Erosion

The objective of this study is to improve the high-temperature erosion-corrosion resistance Incoloy 800 for the application used as thermowell at 900°C. In weld cladding procedure, silicon carbide (SiC) particles were pre-deposited on the Incoloy 800 substrate, followed by the cladding of Ni-base alloy filler (34Ni-25Cr-0.4C-Ti-W-Mo) by a gas tungsten arc welding. A theoretical amount of SiC particles mixed with filler was 2 - 30%wt. A particle size of SiC was in the range of 50-150 mm. The results showed that the addition of 15%wt SiC led to the maximum hardness of the cladding layer. Addition of particles more than 15wt% tended to provoke cracks in cladding layer. The larger particle size exhibited the higher hardness. An erosion rate of cladding surface was further tested by the perpendicular impingement of 1-mm SiC abrasion sands on the sample surface with air flow velocity of 220 m s-1 at 900°C in air. For cladding layer with the same amount of SiC mixed, the one mixed with larger particle size exhibited the higher erosion-corrosion resistance. Likewise, for cladding layer mixed by the same size of SiC, the addition of particle with a smaller amount promoted the higher erosion-corrosion resistance. The addition of 2.6 wt% SiC particles with 150 mm size in cladding layer showed the surface with the best erosion-corrosion resistance in this study. No oxide scale was, however, observed on eroded surface due to the spallation by high impact erodent particles.

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The High Temperature Erosion/Corrosion Behavior of Industrial Thermally Sprayed Coatings

Thermal Spray 1996: Proceedings from the National Thermal Spray Conference ◽

10.31399/asm.cp.itsc1996p0029 ◽

1996 ◽

Author(s):

G.R. Heath ◽

P.A. Kammer ◽

M.M. Stack

Keyword(s):

High Temperature ◽

Thermal Spray ◽

Corrosion Behavior ◽

Bulk Material ◽

Industrial Applications ◽

Material Behavior ◽

Chemical Waste ◽

Temperature Oxidation ◽

Erosion Corrosion ◽

High Temperature Erosion

Abstract There are numerous industrial applications where materials are subjected to simultaneous high temperature oxidation/corrosion and wear (such as erosion). This combination often leads to accelerated degradation. Specific industries include: chemical, waste incineration, power generation and paper/pulp with typical applications including boilers and cyclones. Previous studies have established wrought material compositions and microstructures which can resist these environments. In searching for cost-effective industrial solutions, surface coating via thermal spray becomes attractive. However, the microstructural complexity of such coatings can make the simple extrapolation of bulk material behavior to these coatings dangerous. If these coatings are to be used more widely, a greater understanding of their high temperature erosion/corrosion behavior and the influence of coating process is required. A range of Fe-and Ni-based alloys and thermal spray techniques were studied under various high temperature erosion/corrosion conditions. The critical erosion parameters of impact angle (30° to 90°) and temperature (up to 550°C in air) have been studied in an atmospheric fluidized bed test rig environment, using Al2O3 erodent at a typical impact velocity of 4m/sec and conventional high temperature erosion test equipment. The important microstructural and mechanical features of the coatings and the effect of the thermal spray process are discussed in terms of their high temperature degradation mechanisms.

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