Influence of sintering temperature on the microstructure, mechanical and tribological properties of ZrO2 reinforced spark plasma sintered Nie-Cr.
Oketola, Adeola Jamiru, Tamba Yusuff, Adedayo A. Jimoh, A.A. Sadiku, Rotimi Salifu, Smith
Oketola, Adeola
Jamiru, Tamba
Yusuff, Adedayo A.
Jimoh, A.A.
Sadiku, Rotimi
Salifu, Smith
Citations
Altmetric:
Abstract
The microstructure, mechanical and tribological properties of NieCreZrO2 composites, manufactured by using the spark plasma sintering technique with different sintering temperatures, were investigated. The individual powder was measured and mixed thoroughly in a tubular mixer for 8 h before being transferred to the sintering machine. The sintering temperatures of 800, 900, 950 and 1000 C with a pressure of 50 MPa, a holding time of 5 min and heating rate of 100 C/min were used as the process parameters in order to develop four compositional composite systems, used in this investigation. Wear tests were, performed on the sintered composites at 10 N, 15 N and 20 N loads. The microstructural analyses of the sintered sample revealed the associated compositional homogeneities, formation of phases and pores. The results showed that the sintering temperature influenced the mechanical and tribological properties of the sintered composites, such that the increasing sintering temperature led to an increase in the relative density. The microhardness and wear resistance increased with the increasing sintering temperature, which showed that the composites developed, possessed improved properties by using high sintering temperature. Thus, the sample sintered at 1000 C maintained the least wear rate and consequently, the best hardness property.
Description
Date
2022-02-21
Journal Title
Journal ISSN
Volume Title
Publisher
KeAi Communications Co. Ltd
Research Projects
Organizational Units
Journal Issue
Keywords
Sintering temperature, NieCreZrO2 composites, Microstructure, Hardness, Wear