Mazumder, Subhrojyoti and Metselaar, Hendrik Simon Cornelis and Sukiman, Nazatul Liana and Mohd Zulkifli, Nurin Wahidah (2023) Influence of fluoride phase on the tribological behaviour of Si3N4-SiC composites under extreme operating conditions. Wear, 528-52. ISSN 0043-1648, DOI https://doi.org/10.1016/j.wear.2023.204970.
Full text not available from this repository.Abstract
For extreme operating conditions such as high temperature and load, Si3N4-SiC composite is often used as wear resistant material. However, it suffers from a moderately high friction coefficient and wear rate at such working conditions; therefore, it is still an ongoing area of research for further development. This work strives to develop a state-of-the-art wear-resistant Si3N4 composite with SiC nanowire as reinforcement phase and MgF2 as an internal lubricating additive, particularly suitable for harsh operating conditions at both high temperatures and high loads. A significant improvement in tribological characteristics is observed when MgF2 is added into the composite matrix tested at 500 degrees C as compared to its parent Si3N4-SiC composite. When the load is increased from 6 to 14 N, the composite shows better wear resistance by forming a lubricious tribolayer at the contacting surface. Delamination is found to be the dominating wear mode for composites containing fluoride phase as identified by the morphological characterization of the worn surfaces. A comprehensive analysis of the evolution of different wear modes with respect to the variation in extreme operating conditions is articulated here.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Education, Malaysia [Grant No: FRGS/1/2020/TK0/UM/02/12], Universiti Malaya, Malaysia [Grant No: GPF061A-2020] |
| Uncontrolled Keywords: | Fluoride additives; Non-oxide ceramics; High temperature; High load; Wear characteristics |
| Subjects: | T Technology > TJ Mechanical engineering and machinery |
| Divisions: | Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 08 Nov 2025 03:09 |
| Last Modified: | 08 Nov 2025 03:09 |
| URI: | http://eprints.um.edu.my/id/eprint/49781 |
Actions (login required)
 |
View Item |
