St52 Çeliğinin WC Takviyeli Tozla TIG Kaynak Yöntemi ile Kaplanması

St52 Çeliğinin WC Takviyeli Tozla TIG Kaynak Yöntemi ile Kaplanması

St52 ÇELİĞİNİN WC TAKVİYELİ TOZLA TIG KAYNAK YÖNTEMİ İLE KAPLANMASI İhsan Kırık 1 , Zulküf Balalan 2,  Yunus Andan 3, Mehmet Yaz 4 Bu çalışmanın amacı; farklı oranlarda Co-Cr esaslı WC takviyeli tozların TIG kaynak yöntemi kullanılarak St52 çeliğinin yüzeyine ergitilmesi yöntemi ile kaplamaları yapılmasıdır. Farklı özellikteki çelik alt tabakaları üzerine WC-Co-Cr toz karışımları belirlenen oranlarda önceden yerleştirildi ve TIG kaynak işlemi ile kaplama işlemleri yapıldı. Farklı özellikteki kaplama tabakaları çelik alt tabakaya yoğun ve neredeyse hiç gözenek olmadan metalürjik bir bağlanma gösterdi.  Kaplamaların mikroyapı ve faz analizi için, taramalı elektron mikroskobu (SEM), EDS ve X-Ray incelemeleri yapıldı. X-ışın kırınımı incelemesi sonucu, kaplamalarda WC’ lerce zengin düzensiz dağılımlı ötektik yapılarla birlikte birincil dentritik fazlarında olduğu ayrıca WC-Co-Cr kaplamaları WC ve W2C ile CrC ve Cr3C2 karbürleri ile Kobalt, Nikel, Karbonun düzensiz dağılım gösteren fazlarından oluşmuştur.  Anahtar kelimeler: WC-Co-Cr, TIG kaplama, St52

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