The effect of polyvinyl alcohol addition on the solid carbon infusion in zirconia-toughened alumina

Roshidan, Nursamirah and Manshor, Hanisah and Rozhan, Alya Naili and Ahmad Azhar, Ahmad Zahirani (2022) The effect of polyvinyl alcohol addition on the solid carbon infusion in zirconia-toughened alumina. In: 10th International Conference on X-Rays and Related Techniques in Research and Industry, ICXRI 2021, 18 - 19 August 2021, Kuala Lumpur.

	PDF - Published Version Restricted to Registered users only Download (3MB) | Request a copy
	PDF - Supplemental Material Restricted to Repository staff only Download (171kB) | Request a copy

Abstract

This study examines the effect of adding various amount of polyvinyl alcohol (PVA) from 1 wt. % to 5 wt. % as function to produce porosity of the microstructure on Zirconia-Toughened Alumina (ZTA). Porosity is required in this study which aims to increase the efficiency of carbon infiltration on the porous composite through chemical vapor infiltration (CVI). Moreover, carbon production from empty fruit bunch (EFB) was used as a reinforcement on ceramic composites in this system. The microstructure of samples was characterised by using scanning electron microscopy (SEM). The density shows the lowest at 2.864 g/cm3 when the percentage of binder is increased at 4wt.% of PVA without carbon infiltration but shows the highest density value which is 4.107 g/cm3 after carbon is infiltrated. Vickers hardness was used to identify the hardness of samples. It was found that ZTA composite with infiltrated carbon has better hardness (2053HV) with addition of 4wt.% of PVA. However, firing shrinkage showed no effect on the composite with or without carbon infiltration. The structure of crystalline carbon in composite was analyses by X-Ray Diffraction (XRD). Nevertheless, no peak for carbon is observed due to low carbon content and another alternative such as Raman spectroscopy was used to identify the presence of diffused carbon. Based on the result, carbon infiltration on composite will produce better physical and mechanical properties with the help of binders that produce pores for carbon to infiltrate.

Item Type:	Conference or Workshop Item (Slide Presentation)
Additional Information:	This Journal indexed in ERA 2023 Journal List. - SK, 07/03/2023
Uncontrolled Keywords:	Zirconia-toughened alumina (ZTA); Polyvinyl alcohol (PVA); Empty fruit bunch (EFB); solid carbon; chemical vapor infiltration (CVI)
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering Kulliyyah of Engineering > Department of Science
Depositing User:	Dr. Hanisah Manshor
Date Deposited:	07 Mar 2023 10:31
Last Modified:	07 Mar 2023 11:57
URI:	http://irep.iium.edu.my/id/eprint/103830

Actions (login required)

View Item