The Effect of Thermo Reactive Diffusion (TRD) Processing Time with Ferrochromium Powder on Carbide Layer Characteristics on SUJ 2 Tool Steel Substrate

Annida Jihan Maulida, Myrna Ariati

Research output: Contribution to journalConference articlepeer-review

Abstract

In this study, the formation of chromium carbide layer on SUJ 2 tool steel substrate as a surface treatment by thermo reactive diffusion process with pack cementation method was observed. The powder used are Al2O3, NH4CL, and FeCr as carbide forming elements with the composition of 37%, 3%, 60% for each. TRD process performed in rotating vacuum furnace for 4, 6, and 8 hours on 980°C. The results show time variation effects on the carbide layer. Thickenss carbide layer on SUJ2 after TRD process observed by Optical Microscope. The morphology of carbide layer observed with SEM shows a smooth and dense layer with almost no porosity formed. Cr23C6 and Cr7C3 found on the layer by XRD and hardness value obtained using Vickers microhardness testing for each samples are 1738.62, 1738.72, and 1739.64 HV. The wear rates are inversely proportional with the hardness value where the values are 0.000698, 0.000658, and 0.000627 mm3/m.

Original languageEnglish
Article number012019
JournalIOP Conference Series: Materials Science and Engineering
Volume553
Issue number1
DOIs
Publication statusPublished - 12 Nov 2019
Event19th International Union of Materials Research Societies - International Conference in Asia, IUMRS-ICA 2018 - Bali, Indonesia
Duration: 30 Oct 20182 Nov 2018

Keywords

  • Chromium carbide
  • Pack cementation
  • Thermo reactive diffusion

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