Atmospheric Plasma Spraying APS

Vassen R, Hathiramani D, Mertens J, Haanappel VAC, and Vinke IC. Manufacturing of high performance solid oxide fuel cells (SOFCs) with atmospheric plasma spraying (APS). Surf. Coat. Technol. 2007 202 499-508. 

Figure 5.32 SEM images of conventional atmospheric plasma sprayed (APS, left) and suspension plasma sprayed (SPS, right) hydroxyapatite coatings, (a, b) Top view and (c, d) coating cross-sections (Gross and Saber-Samandari, 2009). ( With permission by Elsevier.)...

In general, two methods are used to deposit TBCs onto a superalloy substrate (i) atmospheric plasma spraying (APS) and (ii) electron beam-physical vapor deposition (EB-PVD). 

Zirconia stabilised with 8 wt.% zirconia was used as coating material for processing of the TBC specimens. All atmospheric plasma spraying (APS) was carried out by the processing group of the Institute for Materials and Processes in Energy Systems (IWVl) at the Research Centre Juelich. 

DLR is developing DBLs of perovskite materials, such as doped LaCrOs-type and LaMnOs-type, by atmospheric plasma spray (APS), vacuum plasma spray (VPS), or pulse laser deposition (PLD) [16-21]. Using doped LaCrOs layer deposited by VPS on FSS alloy [15], they showed that after 230 h of cell operation, both Ni in the substrate and Fe in the anode replace less than 0.1 % of the primary metal atoms. This is about hundred times less than the 17 % of Ni atoms in grain substituted by Fe and Cr in an anode of a cell prepared without DBL. 

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