SHS İşlemi Sonrası Sinterleme İşleminin İntermetalik Kaplamaya Etkisinin İncelenmesi

Yıl 2019, Cilt: 31 Sayı: 1, 167 - 176, 15.03.2019

Musa Kılıç Mustafa Beken Niyazi Özdemir

Öz

Yanma yöntemi kullanılarak Ferritik paslanmaz çelik yüzeyi
üzerine Ni₃Al intermetalik bileşiği kaplanmıştır. Bu kaplama
yönteminde kullanılan presleme basıncı(150, 200, 250, 300Mpa) ve yanma işlemi
akabinde gerçekleştirilen sinterleme sıcaklığının(1100C) kaplama tabakasına
etkisi incelenmiştir. Kaplama tabakasının karakterizasyon işlemleri optik mikroskop, SEM, XRD
ve EDX analizleri kullanılarak gerçekleştirilmiştir. Analizler sonucunda
kaplama tabakası ile alt tabaka arasında gerçekleşen difüzyon ile bağlanmanın
iyi olduğu gözlenmiştir. EDS analizleri sonucunda α Fe,Cr, Ni, Ni₃Al,
γ Fe ve XRD sonuçlarında ise Ni₃Al ve Ni ile birlikte Ni₃Al_4,
NiAl, Ni₃Cr_2,  Ni₂Al₃ fazları meydana gelmiştir.
Yapılan mikrosertlik analizlerinde ise kaplama tabakasının gözenekli yapısı
nedeniyle alt tabakaya göre daha düşük sonuçlar elde edilmiştir. Sonuç olarak 1100
C’lik sinterleme
sıcaklığında metaller arası fazların tamemen çözündüğü tespit edilmiştir.

Anahtar Kelimeler

SHS, Ni3Al, Kaplama, İntermetalik, Paslanmaz çelik

Kaynakça

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