SURFACE MORPHOLOGY AND MICROHARDNESS BEHAVIOR OF 316L IN HAP-PMEDM

The development of biomaterials for implants nowadays requires materials with superior mechanical and physical properties for enhanced osseointegration and sustained longevity. This research work was conducted to investigate the influence of nano hydroxyapatite (HAp) powder mixed electrical discharg...

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Bibliographic Details
Published in:Facta Universitatis. Series: Mechanical Engineering 2019-12, Vol.17 (3), p.445-454
Main Authors: Singh, Gurpreet, Lamichhane, Yubraj, Bhui, Amandeep Singh, Sidhu, Sarabjeet Singh, Bains, Preetkanwal Singh, Mukhiya, Prabin
Format: Article
Language:English
Subjects:
Austenitic stainless steels
Biomedical materials
Calcium compounds
Discharge
Experimentation
Hydroxyapatite
Intermetallic compounds
Machining
Metal compounds
Microhardness
Morphology
Parameter modification
Physical properties
Process parameters
Stainless steel
Surgical implants
Transplants & implants
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Summary:The development of biomaterials for implants nowadays requires materials with superior mechanical and physical properties for enhanced osseointegration and sustained longevity. This research work was conducted to investigate the influence of nano hydroxyapatite (HAp) powder mixed electrical discharge machining (PMEDM) on surface morphology and microhardness of modified 316L stainless steel surface. The chosen process parameters were discharge current, pulse on/off duration and gap voltage in order to analyze the selected output responses. HAp concentration (15 g/l) along with reverse polarity was kept constant for current experimentation. The experimental results testified that surface morphology of PMEDM surface was significantly improved along with augmentation of 79% in microhardness (HV) of HAp modified surface of medical grade stainless steel. Furthermore, XRD and SEM characterization confirmed the deposition of calcium, phosphorous and inter-metallic compounds on HA-PMEDMed surface. The surface thus produced is expected to facilitate better bone-implant adhesion and bioactivity.
ISSN:0354-2025
2335-0164
DOI:10.22190/FUME190510040S