Formation of void in BFS/CACO3 diffusion couple

Ismail, Ahmad Abdul Mun'im and Rozhan, Alya Naili and Rosdin, Muhammad Rafiq Haikal and Purwanto, Hadi and Abdul Hamid, Abd. Malek and Ani, Mohd Hanafi (2025) Formation of void in BFS/CACO3 diffusion couple. IIUM Engineering Journal, 26 (3). pp. 386-396. ISSN 1511-788X E-ISSN 2289-7860

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Abstract

This study investigates void formation in the blast furnace slag (BFS) and calcium carbonate (CaCO3) diffusion couple, which is critical for understanding the interdiffusion process in cement production. The experimental analysis involved hightemperature diffusion experiments, focusing on the volume fraction of void at the BFS/CaCO3 interface, the activation energy of void formation, and the I-V measurement of void formation at the BFS/CaCO3 interface. Void measurements revealed a 25% increase after exposure to the specified temperature, while the activation energy for void formation was calculated to be – 41.48 kJ/mol. I-V measurements revealed ionic diffusion as the dominant mechanism for void formation, with an average decomposition rate of 1.4598  10-12 m2 s -1 . These findings provide valuable insights for utilizing BFS in cement production.

Item Type:	Article (Journal)
Uncontrolled Keywords:	void formation, diffusion couple, blast furnace slag, calcium carbonate
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering Kulliyyah of Engineering
Depositing User:	Dr Mohd Hanafi Ani
Date Deposited:	04 Dec 2025 10:13
Last Modified:	04 Dec 2025 10:13
Queue Number:	2025-11-Q334
URI:	http://irep.iium.edu.my/id/eprint/124889

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