Ni/Ti TOZLARININ PTA YÖNTEMİYLE AISI 1020 YÜZEYİNDEKİ KAPLAMALARININ MİKROYAPI ÖZELLİKLERİ

Yıl 2008, Cilt: 6 Sayı: 2, 125 - 131, 30.03.2008

Ali Kaya Gür Ayhan Orhan Uğur Çalıgülü

Öz

Bu
çalışmada; AISI 1020 düşük karbonlu çelik
yüzeyine PTA (Plazma Tungsten Ark) yöntemiyle Ni/Ti tozları kaplanmıştır.
Kaplama tabakasından elde edilen Ni-Ti-Fe kompozitinin kafes yapısı, üçlü faz denge
diyagramı ile karşılaştırılarak oluşması muhtemel fazlar belirlenmeye
çalışılmıştır. Ana malzeme olan AISI 1020’nin mikrosertliği 210 HV iken, yüzey tabakasının mikrosertliği
690 HV olarak ölçülmüş ve sertlik de-ğerlerinde önemli ölçüde artış
sağlanmıştır. Elde edilen kaplama tabakalarının, SEM görüntüleri ve EDS
analizleri yapılarak mikrosertlik değerleri ile kıyaslanmıştır.

Anahtar Kelimeler

AISI 1020, PTA, Ni/Ti tozları, Kaplama

Kaynakça

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