AISI 4140 Çelik Yüzeyinde Termoreaktif Difüzyon Yöntemiyle Elde Edilen TiC Kaplamasının Mikroyapı Özelliklerinin İncelenmesi

Year 2019, Volume: 31 Issue: 2, 473 - 480, 27.09.2019

Soner Buytoz

https://doi.org/10.35234/fumbd.556225

Cited By: 1

Abstract

Bu çalışmada AISI 4140 çeliğinin yüzeyi ferro-titanyum  (FeTi) tozuyla kaplanmıştır. Kaplamalar, üç farklı sıcaklıkta (900 °C, 1000 °C ve 1100 °C) ve üç farklı sürede (1 saat, 2 saat ve 3) paket sementasyon yöntemiyle bir termo-reaktif difüzyon (TRD) işlemi kullanılarak gerçekleştirmiştir. Kaplamaların yapısal ve mekanik özellikleri karşılaştırılmıştır. Bu amaçla, oluşan fazların tipleri, mikroyapıları , mikro sertlikleri incelenmiştir. XRD analizi sonucunda kaplama tabakalarında α-Fe ve TiC fazları tespit edildi. . Kaplamaların kalınlığı 3.04–11.70 μm ve sertlik 1089–2335 HV değerleri elde edildi.  Kaplamaların Ti içeren faz bileşenleri, artan kaplama sıcaklıkları ile arttı.

Keywords

Kaplama, mikroyapı, termoreaktif difüzyon

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