Hot corrosion of some superalloys and role of high-velocity oxy-fuel spray coatings—a review

Sidhu, T. S.; Agrawal, R. D.; Prakash, S.

doi:10.1016/j.surfcoat.2004.10.056

Cited by 206 publications

(65 citation statements)

References 35 publications

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“…Achieving satisfactory protection of bulk materials at high temperatures has also been an important application market. Thus, improving the corrosion resistance of superalloy substrates, such as gas-turbine blades, has been a very distinct line of research and publication (Ref [13][14][15]. Besides this, the high electrical resistivity of these coatings has been exploited to achieve insulating coatings for use in electronics (Ref [16][17][18][19].…”

Section: Metal Oxide Passive Layersmentioning

confidence: 99%

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

Gardon

Guilemany

2014

J Therm Spray Tech

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Titanium dioxide has been the most investigated metal oxide due to its outstanding performance in a wide range of applications, chemical stability and low cost. Coating processes that can produce surfaces based on this material have been deeply studied. Nevertheless, the necessity of coating large areas by means of rapid manufacturing processes renders laboratory-scale techniques unsuitable, leading to a noteworthy interest from the thermal spray (TS) community in the development of significant intellectual property and a large number of scientific publications. This review unravels the relationship between titanium dioxide and TS technologies with the aim of providing detailed information related to the most significant achievements, lack of knowhow, and performance of TS TiO 2 functional coatings in photocatalytic, biomedical, and other applications. The influence of thermally activated techniques such as atmospheric plasma spray and high-velocity oxygen fuel spray on TiO 2 feedstock based on powders and suspensions is revised; the influence of spraying parameters on the microstructural and compositional changes and the final active behavior of the coating have been analyzed. Recent findings on titanium dioxide coatings deposited by cold gas spray and the capacity of this technology to prevent loss of the nanostructured anatase metastable phase are also reviewed.

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Section: Metal Oxide Passive Layersmentioning

confidence: 99%

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

Gardon

Guilemany

2014

J Therm Spray Tech

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“…Variations in thermal expansion coefficients promote thermal stresses and possibly subsequent cracking and spallation of coatings. Even the most resistant alloys are susceptible to hot corrosion attacks (Sidhu et al, 2005 and2006) and no coatings are totally reliable, which can result in catastrophic failure when they do fail. The design of coatings is becoming progressively difficult for increasingly higher temperature applications, due to the lack of compatibility of thermal expansion coefficients between coatings and high-temperature alloys.…”

Section: Coatingsmentioning

confidence: 99%

Platinum-Based Alloys and Coatings: Materials for the Future?

Cornish¹,

Chown²

2011

Advances in Gas Turbine Technology

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“…In combustion processes utilizing biomass or MSW, the steam temperatures are usually kept lower than 450°C to avoid corrosion problems [5]. Raising the steam temperature by an additional 50°C can result in significant increases in the corrosion rate in a biomass power plant [2,6]. Such problems become amplified by: (i) the use of fuels containing alkali metals, heavy metals, Cl and S; (ii) fluctuations in the flue gas flow; (iii) the high velocity, particle-bearing flue gas; and finally (iv) deposit (combustion residues) accumulation [3,5,7,8].…”

Section: High Temperature Corrosion In Waste-to-energy Facilitiesmentioning

confidence: 99%

Investigation into high-temperature corrosion in a large-scale municipal waste-to-energy plant

et al. 2010

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High-temperature corrosion in the superheater of a large-scale waste-to-energy plant was investigated. A comparison of nickel-/iron-based alloys and austenitic stainless steel probes placed in the furnace demonstrated that temperature and particle deposition greatly influence corrosion. Nickel-based alloys performed better than the other metal alloys, though an aluminide coating further increased their corrosion resistance. Sacrificial baffles provided additional room for deposit accumulation, resulting in vigorous deposit-induced corrosion. Computational modelling (FLUENT code) was used to simulate flow characteristics and heat transfer. This study has shown that the use of aluminide coatings is a promising technique for minimising superheater corrosion in such facilities.

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Hot corrosion of some superalloys and role of high-velocity oxy-fuel spray coatings—a review

Cited by 206 publications

References 35 publications

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

Milestones in Functional Titanium Dioxide Thermal Spray Coatings: A Review

Platinum-Based Alloys and Coatings: Materials for the Future?

Investigation into high-temperature corrosion in a large-scale municipal waste-to-energy plant

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