Advanced thermal spray technologies for applications in energy systems

Vaßen, Robert; Kaßner, H.; Stuke, A.; Hauler, Felix; Hathiramani, D.; Stöver, D.

doi:10.1016/j.surfcoat.2008.04.022

Cited by 89 publications

(38 citation statements)

References 7 publications

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“…One of the most important issues is the densification of the electrolyte layer that normally requires high sintering temperatures (normally >1,200°C for YSZ-based electrolytes), which in oxidizing atmosphere leads to serious corrosion of the metallic substrate. To solve the problem, different processing routes to fabricate electrodes and dense electrolytes on metallic supports have been employed, such as atmospheric plasma spray processing (APS) [3,4], vacuum plasma spraying (VPS) [5][6][7], pulsed laser deposition (PLD) [8], electrophoretic deposition (EPD) [9], and high temperature sintering in reducing atmosphere [1,[10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Planar Metal‐Supported SOFC with Novel Cermet Anode

et al. 2011

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Metal‐supported solid oxide fuel cells are expected to offer several potential advantages over conventional anode (Ni‐YSZ) supported cells. For example, increased resistance against mechanical and thermal stresses and a reduction in material costs. When Ni‐YSZ based anodes are used in metal supported SOFC, elements from the active anode layer may inter‐diffuse with the metallic support during sintering. This work illustrates how the inter‐diffusion problem can be circumvented by using an alternative anode design based on porous and electronically conducting layers, into which electrocatalytically active materials are infiltrated after sintering. The paper presents the electrochemical performance and durability of the novel planar metal‐supported SOFC design. The electrode performance on symmetrical cells has also been evaluated. The novel cell and anode design shows a promising performance and durability at a broad range of temperatures and is especially suitable for intermediate temperature operation at around 650 °C.

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Section: Introductionmentioning

confidence: 99%

Planar Metal‐Supported SOFC with Novel Cermet Anode

et al. 2011

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“…The metallic bond coat has two types of major functions required for the TBC applications. It improves the bonding between the topcoat and the substrate, and it protects the substrate from corrosion and oxidation [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…However, the major disadvantage of YSZ is the limited operation temperature of 1473 K for the long-term application [9,11]. At higher temperatures, the t -tetragonal phase transforms into the tetragonal and the cubic (t + c) phases.…”

Section: Introductionmentioning

confidence: 99%

Novel thermal barrier coatings based on La2(Zr0.7Ce0.3)2O7/8YSZ double-ceramic-layer systems deposited by electron beam physical vapor deposition

Xu¹,

He²,

He³

et al. 2011

Journal of Alloys and Compounds

113

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“…1000°C using nickel-based superalloys, the base materials should be physically and chemically protected from hot gases at temperatures ≥ 900°C to 1000°C. Oxide-based thermal barrier coatings (TBCs) are an effective engineering solution for improving the service performance of GT components, for which yttrium-stabilized zirconia (YSZ) combined with Ni(Pt)Al or MCrAlY oxidation protection coatings is widely used [2][3][4][5][6][7]. Although these YSZ TBCs provide thermal insulation towards metallic substrates, the durability of the coatings is limited due to spallation [8], hot corrosion [9] and phase transformation [10], which have prompted further studies on the modification of the coatings themselves [11,12], as well as on the development of other types of oxides such as Yb 2 O 3 or Gd 2 O 3 [13], La 2 Ce 2 O 7 [14,15], Y 3 AlxFe 5-x O [16] and LaMgAl 11 O 19 [17].…”

Section: Introductionmentioning

confidence: 99%

In-situ deposition of silica layers during the operation of a micro-gas turbine and their effect on the oxidation of superalloy blades

Kim

2010

Met. Mater. Int.

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Silica-based oxide layers were deposited in-situ on turbine blades made from Inconel 713 during the operation of a 13 kgf-class gas turbine, and their effect on the ex-situ oxidation behavior of the blades at 1050°C was examined. The two turbines were driven by burning liquid petroleum gas (LPG), one turbine at a rotation speed of 35,000 rpm for 4 h (TB04), and the other at 42,000 rpm for 8 h (TB08). For deposition, tetraethylorthosilicate (TEOS) was sprayed into the fuel line immediately ahead of the combustion chamber. The TEOS-to-LPG ratio for TB04 and TB08 was maintained at 5.4 wt.% and 2.3 wt.%, respectively. Directly after operation, the turbine blades were coated with silica layers to a thickness of ~10 µm, independent of the operating conditions. These oxide layers on the blades provided excellent protection against oxidation during both operation and the ex-situ isothermal oxidation test.

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Advanced thermal spray technologies for applications in energy systems

Cited by 89 publications

References 7 publications

Planar Metal‐Supported SOFC with Novel Cermet Anode

Planar Metal‐Supported SOFC with Novel Cermet Anode

Novel thermal barrier coatings based on La2(Zr0.7Ce0.3)2O7/8YSZ double-ceramic-layer systems deposited by electron beam physical vapor deposition

In-situ deposition of silica layers during the operation of a micro-gas turbine and their effect on the oxidation of superalloy blades

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