Synthesis and characterization of superalloy coatings by cathodic arc evaporation

被引:2
作者
Ast, J. [1 ]
Dobeli, M. [2 ]
Dommann, A. [3 ]
Gindrat, M. [4 ]
Maeder, X. [1 ]
Neels, A. [3 ]
Polcik, P. [5 ]
Polyakov, M. N. [1 ]
Rudigier, H. [6 ]
von Allmen, K. D. [3 ]
Widrig, B. [6 ]
Ramm, J. [6 ]
机构
[1] Empa, Lab Mech Mat & Nanostruct, Feuerwerkerstr 39, CH-3602 Thun, Switzerland
[2] ETH, Ion Beam Phys, Otto Stern Weg 5, CH-8093 Zurich, Switzerland
[3] Empa, Ctr Xray Analyt, Uberlandstr 129, CH-8600 Dubendorf, Switzerland
[4] Oerlikon Metco AG, CH-5610 Wohlen, Switzerland
[5] Plansee Composite Mat GmbH, Siebenburgerstr 23, D-86983 Lechbruck, Germany
[6] Oerlikon Surface Solut AG, Iramali 18, LI-9496 Balzers, Liechtenstein
关键词
Superalloy; Bond coat; Epitaxy; In-situ processing; Arc evaporation; THERMAL BARRIER COATINGS; OXIDATION;
D O I
10.1016/j.surfcoat.2017.07.061
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
Superalloy targets were produced from Ni-(Al-C-Co-Cr-Mo-Ta-Ti-W) powders by spark plasma sintering technology. The crystalline structure of the as-produced targets was investigated by XRD analysis and compared with the evolution of phases resulting from the operation of the cathodic arc at the target (cathode) surface. Coatings were synthesized at superalloy substrates utilizing these superalloy targets in non-reactive and reactive evaporation processes. Synthesized coatings and target surfaces were compared with respect to chemical composition and crystal structure. The interface between coating and superalloy substrates was investigated by TEM. As an example, a complete layer stack was synthesized by cathodic arc evaporation starting from the super alloy substrate - superalloy coating interface to a fully oxidized superalloy coating showing epitaxial growth in the interface to the superalloy substrate. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:139 / 145
页数:7
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