Plazma Transferli Ark Kaynak Yöntemiyle Hardox 400 Çelik Malzemenin Yüzeyinin Farklı Oranlardaki FeCrC Tozuyla Alaşımlandırılması

Yıl 2018, Cilt: 30 Sayı: 1, 233 - 242, 01.03.2018

Ali Kaya Gür Muhammet Hulusi Cengiz Tülay Yıldız Semih Taşkaya

Öz

Bu çalışmada, aşınmaya
dayanıklı olan Hardox 400 çelik malzemenin yüzeyi B₄C, TiC, SiC tozlarını
sabit olmak koşuluyla, FeCrC tozlarının farklı kombinasyonları kullanılarak
plazma transferli ark (PTA) kaynak yöntemiyle alaşımlandırılmıştır. PTA kaynak
ile yapılan kaplama işleminde FeCrC tozunun Hardox 400 çelik üzerine etkisi
araştırılmıştır. Kaplama tabakası; mikroserlik, optik mikroskop (OM), taramalı
elektron mikroskobu (SEM), X-ışın difraktogramı (XRD) ve X ışını enerji dağılım
spektrometresinden (EDS) faydalanılarak incelenmiştir. Optik mikroskop,
mikroyapı incelemeleri ve mikrosertlik değerleri neticesinde, kaplama tabakası
ile alt tabakanın birbirlerine metalurjik olarak bağlandığı, FeCrC’nin
varlığında sertlik değerlerinde gözle görülür bir artış meydana geldiği ve aynı
zamanda yapıda MC (metal karbür) ve Me-B (metal borür) fazları oluştuğu tespit
edilmiştir.

Anahtar Kelimeler

Hardox 400, Plazma Transferli Ark, FeCrC, Borür ve Karbür

Kaynakça

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