scholarly journals Heat Transfer in Thermal Barrier Coatings with Gradient Constituents Fabricated by Low Pressure Plasma Spraying

1990 ◽  
Vol 54 (11) ◽  
pp. 1256-1260 ◽  
Author(s):  
Yoshiki Tsunekawa ◽  
Hiroshi Harada ◽  
Masahiro Okumiya ◽  
Itaru Niimi
Keyword(s):  
Heat Transfer ◽  
Plasma Spraying ◽  
Thermal Barrier Coatings ◽  
Low Pressure ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Low Pressure Plasma Spraying

Equipment for Low Pressure Plasma Spraying Processes – A Review

2015 ◽  
Vol 227 ◽  
pp. 561-564
Author(s):  
Marek Góral ◽  
Tadeusz Kubaszek
Keyword(s):  
Plasma Spraying ◽  
Thermal Barrier Coatings ◽  
Low Pressure ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Pressure Plasma ◽  
The World ◽  
Low Pressure Plasma ◽  
Low Pressure Plasma Spraying

The paper presents basic methods of plasma spraying at very low pressure (<2 mbar). Described in the text are conditions which influence microstructure of Thermal Barrier Coatings obtained by these methods. A review and characteristics of the LPPS-TF system applied around the world has been provided.

Influence of Low Pressure Plasma Spraying Parameters on MCrAlY Bond Coat and its Microstructure

2013 ◽  
Vol 592-593 ◽  
pp. 421-424 ◽  
Author(s):  
Marek Góral ◽  
Slawomir Kotowski ◽  
Kamil Dychtoń ◽  
Marcin Drajewicz ◽  
Tadeusz Kubaszek
Keyword(s):  
Plasma Spraying ◽  
Thermal Barrier Coatings ◽  
Bond Coat ◽  
Low Pressure ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Inconel 617 ◽  
Low Pressure Plasma Spraying

Low pressure plasma spraying (LPPS) is one of the most advanced processes of an MCrAlY bond coat formation. It ensures the forming of metallic coatings free of oxides which can act as an bond coat for thermal barrier coatings used, among others, for protection of turbine blade surface. The paper presents results of tests into microstructure of coatings made from AMDRY 997 powder on the base of type Inconel 617 heat-resistant nickel alloy. The tests were carried out using light and scanning electron microscopy. Evaluated was the influence of spraying conditions on microstructure, porosity and thickness of the obtained coating. Test results show that the LPPS method allows to form coatings of low porosity and free of oxides which can be used as an bond coat in thermal barrier coatings.

Microstructure of Thermal Barrier Coatings Deposited by Low Pressure Plasma Spraying and Chemical Vapour Deposition Methods on Rene 80 Nickel Superalloy

2015 ◽  
Vol 227 ◽  
pp. 333-336
Author(s):  
Marek Góral ◽  
Maciej Pytel ◽  
Wojciech Cmela ◽  
Sławomir Kotowski
Keyword(s):  
Plasma Spraying ◽  
Thermal Barrier Coatings ◽  
Hot Corrosion ◽  
Vapour Deposition ◽  
Nickel Superalloy ◽  
Ceramic Layer ◽  
Thermal Barrier ◽  
Barrier Coatings ◽  
Low Pressure Plasma ◽  
Low Pressure Plasma Spraying

The paper presents results of research into thermal barrier coatings characterized by high oxidation resistance and hot corrosion. Bondcoats were formed by overaluminizing of an MeCrAlY–type coating deposited by low pressure plasma spraying. The outer ceramic layer of yttrium oxide stabilized zirconia oxide (Metco 6700) was deposited by plasma spray physical vapour deposition (PS-PVD). For comparison purposes additionally LPPS-sprayed were MeCrAlY bondcoats, which were not subsequently aluminized. Used as base material was Rene 80 nickel superalloy. The research has shown that as a result of aluminizing by the CVD method there was formed in the bondcoat a deposit zone built of the β-NiAl phase which protects from oxidation. Preserved below increased chromium content ensures resistance to hot corrosion. The outer ceramic layer was characterized by columnar structure similar to that obtained in the EB-PVD process.

Structures and mechanical properties of rapidly solidified deposits of an Fe-1.50wt.%C-10.7wt.%Cr alloy by low pressure plasma spraying

1994 ◽  
Vol 186 (1-2) ◽  
pp. 105-112 ◽  
Author(s):  
Kenji Murakami ◽  
Yoshitaka Fujii ◽  
Hiroshi Matsumoto ◽  
Tsuyoshi Irisawa ◽  
Taira Okamoto ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Plasma Spraying ◽  
Low Pressure ◽  
Pressure Plasma ◽  
Low Pressure Plasma ◽  
Rapidly Solidified ◽  
Low Pressure Plasma Spraying
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