Thermal cycling study of prospective fuel-cell sealants from silica-sand/alumina composites

Nurul Hidayat*, Malik Anjelh Baqiya, Triwikantoro, Suminar Pratapa

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

As excellent alternatives for cleaner energy production evaluated against conventional nonrenewable energy sources, fuel-cells have now been commercially viable. However, efforts to improve their efficiency are always important. By high temperature and sandwich model of fuel-cells, sealing materials play an important role to prevent air leakage and entirely lock the hydrogen inside to achieve high efficiency. In this study, we reported the phase stability of purified silica-sand/alumina composites under heat cycling treatment within the fuel-cells working temperatures. The composites, containing commercial Al2O3 and purified SiO2 from Indonesian silica sand, were prepared using a simple solid-state reaction approach. X-ray diffraction data collection and evaluation were performed to check the phase formation of the compact ceramic composites. Herein, we focused on the composites' phase stability under heat treatment for several times. As a result, the phase content in the composites remained unchanged. This stable characteristic also applied to the density-porosity behaviors and the coefficient of thermal expansion (CTE) of the composites. In addition, the CTE of the composites was evaluated theoretically and experimentally. Both results agreed that the CTE values of the composites are suitable for sealing materials. From the crystalline structures, physical and thermomechanical stabilities, it is therefore concluded that the silica-sand/alumina composites can be proposed as fuel-cell seal materials.

Original languageEnglish
Title of host publicationInternational Conference on Electromagnetism, Rock Magnetism and Magnetic Material, ICE-R3M 2019
EditorsSunaryono Sunaryono, Ann Marie Hirt, Jason Scott Herrin, Nordiana Mohd Muztaza, Markus Diantoro, Satria Bijaksana
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420106
DOIs
Publication statusPublished - 18 Aug 2020
Event2019 International Conference on Electromagnetism, Rock Magnetism and Magnetic Material, ICE-R3M 2019 - Malang, Indonesia
Duration: 18 Sept 201919 Sept 2019

Publication series

NameAIP Conference Proceedings
Volume2251
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference2019 International Conference on Electromagnetism, Rock Magnetism and Magnetic Material, ICE-R3M 2019
Country/TerritoryIndonesia
CityMalang
Period18/09/1919/09/19

Fingerprint

Dive into the research topics of 'Thermal cycling study of prospective fuel-cell sealants from silica-sand/alumina composites'. Together they form a unique fingerprint.

Cite this