Investigating Microstructural and Mechanical Behavior of DLP-Printed Nickel Microparticle Composites

Author:

Susanto Benny1,Kumar Vishnu Vijay2,Sean Leonard3ORCID,Handayani Murni4ORCID,Triawan Farid5ORCID,Rahmayanti Yosephin Dewiani4ORCID,Ardianto Haris36ORCID,Muflikhun Muhammad Akhsin3ORCID

Affiliation:

1. PLN Puslitbang, Jl. Duren Tiga Raya No.102, Pancoran, Kota Jakarta Selatan, Jakarta 12760, Indonesia

2. International Institute of Aerospace Engineering and Management, Jain Deemed-to-be-University, JGI Global Campus, Bangalore 562112, India

3. Department of Mechanical and Industrial Engineering, Universitas Gadjah Mada, Jl. Grafika No. 2, Yogyakarta 55281, Indonesia

4. Research Center for Nanotechnology Systems, National Research and Innovation Agency (BRIN), Puspiptek Area, Tangerang Selatan 15314, Indonesia

5. Department of Mechanical Engineering, Sampoerna University, Jl. Raya Pasar Minggu No.Kav. 16, Kec. Pancoran, Jakarta 12780, Indonesia

6. Department of Aerospace Engineering, Sekolah Tinggi Teknologi Kedirgantaraan, Jl. Parangtritis km. 4,5, Yogyakarta 55281, Indonesia

Abstract

The study investigates the fabrication and analysis of nickel microparticle-reinforced composites fabricated using the digital light processing (DLP) technique. A slurry is prepared by incorporating Ni-micro particles into a resin vat; it is thoroughly mixed to achieve homogeneity. Turbidity fluctuations are observed, initially peaking at 50% within the first two minutes of mixing and then stabilizing at 30% after 15–60 min. FTIR spectroscopy with varying Ni wt.% is performed to study the alterations in the composite material’s molecular structure and bonding environment. Spectrophotometric analysis revealed distinctive transmittance signatures at specific wavelengths, particularly within the visible light spectrum, with a notable peak at 532 nm. The effects of printing orientation in the X, Y, and Z axes were also studied. Mechanical properties were computed using tensile strength, surface roughness, and hardness. The results indicate substantial enhancements in the tensile properties, with notable increases of 75.5% in the ultimate tensile strength and 160% in the maximum strain. Minimal alterations in surface roughness and hardness suggest favorable printability. Microscopic examination revealed characteristic fracture patterns in the particulate composite at different values for the wt.% of nickel. The findings demonstrate the potential of DLP-fabricated Ni-reinforced composites for applications demanding enhanced mechanical performance while maintaining favorable printability, paving the way for further exploration in this domain.

Publisher

MDPI AG

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