The porosity assessment of ceramic topcoat in thermal barrier coatings deposited by APS method

• Autorzy: Pytel M. , Góral M. , Nowotnik A.

Identyfikatory

DOI

10.2478/amst-2016-0010

Warianty tytułu

PL

Ocena porowatości warstwy ceramicznej powłokowej bariery cieplnej (TBC) wytworzonej w procesie natryskiwania plazmowego (APS)

• Języki publikacji: EN

Abstrakty

EN

In the paper the comparison of open porosity measurement results of ceramic topcoats in thermal barrier coatings (TBCs) was presented. TBCs were produced by Air Plasma Spraying (APS) method and were consisted of two coatings – an outer ceramic topcoat and metallic MeCrAlY bond coat deposited onto surface of René80 Ni-based superalloy. For deposition of ceramic coatings Metco 201 B NS, Metco 204 NS and Metco 210 powders were used whereas for deposition of metallic bond coat AMDRY 365-1 MeCrAlY powder was used. Both types of coatings were deposited using Thermico A60 plasma gun. The microstructure investigations of cross-sections of produced TBC’s were carried out using Hitachi S-3400N scanning electron microscope. Qualitative image analysis of microstructure of produced TBCs as well as analysis of percentage of pores surface area content AA was performed. The evaluation of porosity in ceramic topcoat was carried out by image analysis using MeTilo v.12.1 quantitative software.

PL

W pracy przedstawiono analizę wyników badań porowatości otwartej w zewnętrznej warstwie ceramicznej powłokowej bariery cieplnej TBC. Międzywarstwę metaliczną wytworzono przy użyciu proszku AMDRY 365-1, natomiast warstwę ceramiczną przy zastosowaniu proszku Metco 201 B NS, Metco 204 NS i Metco 210 firmy Oerlikon Metco. Warstwy natryskiwano za pomocą jednoelektrodowego palnika plazmowego A60 firmy Thermico, w warunkach ciśnienia atmosferycznego (APS) na podłożu nadstopu niklu René 80. Badania mikroskopowe powłokowych barier cieplnych TBC prowadzono przy użyciu skaningowego mikroskopu elektronowego Hitachi S-3400N. Wykonano analizę jakościową obrazów mikrostruktury oraz określono pole powierzchni przekroju płaskiego porów otwartych. W ocenie porowatości zewnętrznej warstwy ceramicznej stosowano program komputerowy do ilościowej analizy obrazu MeTilo v.12.1.

Słowa kluczowe

EN

air plasma spraying; APS; MeCrAlY bond coats; outer topcoat; ZrO2xnY2O3 ceramic topcoats; porosity of TBCs

PL

natryskiwanie plazmowe; APS; międzywarstwa MeCrAlY; zewnętrzna warstwa; zewnętrzna warstwa ceramiczna ZrO2xnY2O3; porowatość warstwy ceramicznej

• Wydawca: Komitet Budowy Maszyn PAN ; De Gruyter
• Czasopismo: Advances in Manufacturing Science and Technology
• Rocznik: 2016
• Tom: Vol. 40, nr 2
• Strony: 53--65
• Opis fizyczny: Bibliogr. 21 poz., rys., tab.

Twórcy

autor

Pytel M.

• Rzeszów University of Technology, Department of Materials Science, 8 Powstańców Warszawy Av., 35-959 Rzeszów

autor

Góral M.

• Rzeszów University of Technology, Department of Materials Science, 8 Powstańców Warszawy Av., 35-959 Rzeszów

autor

Nowotnik A.

• Rzeszów University of Technology, Department of Materials Science, 8 Powstańców Warszawy Av., 35-959 Rzeszów

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)