Analytical modeling of unsteady aluminum depletion in thermal barrier coatings

YEŞİLATA, Bülent

Analytical modeling of unsteady aluminum depletion in thermal barrier coatings

Bülent YEŞİLATA (Harran Üniversitesi, Mühendislik Fakültesi, Makina Mühendisliği Bölümü, Şanlıurfa, Türkiye)

Turkish Journal of Engineering and Environmental Sciences

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Yıl: 2001 Cilt: 25 Sayı: 6 Sayfa Aralığı: 675 - 680 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Analytical modeling of unsteady aluminum depletion in thermal barrier coatings

Öz:

Bu çalışmada uçak türbinlerinde kullanılan ısıl bariyer kaplamalarının oksidasyon davranışları incelenmektedir. Bu amaçla zamana bağlı bir boyutlu bir kütle transfer modeli oluşturulmuştur. Model temel okside tabakası olan Al2O3 oluşmasına sebep olan alüminyumun yapıştırıcı tabakadan transferini hareket noktası olarak almaktadır. Önerilen model ile difüzyon katsayısının, konsantrasyon profilinin ve alüminyum tüketilen bölge kalınlığının bulunabileceği, bir uygulama ile gösterilmektedir. Elde edilen sonuçlar kaplama ısıl ve mekanik özelliklerinde değişim yaratacak seviyede alüminyum transferi olduğunu göstermektedir.

Anahtar Kelime:

Konular: Çevre Mühendisliği

Termal bariyer kaplamalarında kararsız alüminyum transferinin analitik modeli

Öz:

The oxidation behavior of thermal barrier coatings (TBCs) in aircraft turbines is studied. A simple, unsteady and one-dimensional, diffusion model based on aluminum depletion from a bond-coat to form an oxide layer of Al2O3 is introduced. The model is employed for a case study with currently available experimental data. The diffusion coefficient of the depleted aluminum in the alloy, the concentration profiles at different oxidation times, and the thickness of Al-depleted region are obtained. The results suggest that potential changes in the thermo-mechanical properties of the original alloy in the Al-depleted region may be partly responsible for the mechanical failure of TBC systems.

Anahtar Kelime:

Konular: Çevre Mühendisliği

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	YEŞİLATA B (2001). Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. , 675 - 680.
Chicago	YEŞİLATA Bülent Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. (2001): 675 - 680.
MLA	YEŞİLATA Bülent Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. , 2001, ss.675 - 680.
AMA	YEŞİLATA B Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. . 2001; 675 - 680.
Vancouver	YEŞİLATA B Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. . 2001; 675 - 680.
IEEE	YEŞİLATA B "Analytical modeling of unsteady aluminum depletion in thermal barrier coatings." , ss.675 - 680, 2001.
ISNAD	YEŞİLATA, Bülent. "Analytical modeling of unsteady aluminum depletion in thermal barrier coatings". (2001), 675-680.

APA	YEŞİLATA B (2001). Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. Turkish Journal of Engineering and Environmental Sciences, 25(6), 675 - 680.
Chicago	YEŞİLATA Bülent Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. Turkish Journal of Engineering and Environmental Sciences 25, no.6 (2001): 675 - 680.
MLA	YEŞİLATA Bülent Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. Turkish Journal of Engineering and Environmental Sciences, vol.25, no.6, 2001, ss.675 - 680.
AMA	YEŞİLATA B Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. Turkish Journal of Engineering and Environmental Sciences. 2001; 25(6): 675 - 680.
Vancouver	YEŞİLATA B Analytical modeling of unsteady aluminum depletion in thermal barrier coatings. Turkish Journal of Engineering and Environmental Sciences. 2001; 25(6): 675 - 680.
IEEE	YEŞİLATA B "Analytical modeling of unsteady aluminum depletion in thermal barrier coatings." Turkish Journal of Engineering and Environmental Sciences, 25, ss.675 - 680, 2001.
ISNAD	YEŞİLATA, Bülent. "Analytical modeling of unsteady aluminum depletion in thermal barrier coatings". Turkish Journal of Engineering and Environmental Sciences 25/6 (2001), 675-680.