1. Development and Characterization of Boron-Nitride Reinforced Nickel Matrix Composites
- Author
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Uz Zaman Atteeq, Khan Awais, Zaman Fatima, Khan Muhammad Moheen, Farooq Umar, Shehbaz Tauheed, and Karim Muhammad Ramzan Abdul
- Subjects
nickel metal matrix composite ,h-bn ,exfoliation ,nanosheets ,powder metallurgy ,strength ,hardness ,Engineering (General). Civil engineering (General) ,TA1-2040 - Abstract
In this work, pure nickel was reinforced with various contents of h-BN (4 & 8wt.%) and SiC (2, 4, 6 & 8wt.%) prepared via PM route. The synergistic effect of h-BN and SiC on mechanical and microstructural behaviour was investigated. The microstructure and crystal structure were characterized by scanning electron microscope and X-ray diffractometer. The density and microhardness were eveluated via He pycnometer and microhardness tester. SEM results revealed that the exfoliation reduced the particle size of h-BN from approximately 105 nm to 30-40 nm. Furthermore, the addition of h-BN and SiC improved the mechanical properties of the composite. The maximum hardness value of 420 HV was obtained for Ni-8BN-6SiC. This improvement in hardness was attributed to uniform dispersion and high hardness of h-BN and SiC. However, more addition of SiC (>6 wt.%) deteriorated the hardness of the composite due to generated porosity.
- Published
- 2023
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