Metallurgical Engineering

Metallurgical Engineering

Feasibility of using 3D extrusion printing method to make porous clay (kaolin) substrate.

Document Type : Research Paper

Authors
Hajar Ghanbari 1
amir ghaffari 2
niaz bafte 3
niusha sadeghi 3
1 School of Metallurgy and Materials Engineering
2 iran university of science and technology
3 Iran university of science and technology
10.22076/me.2024.2009900.1391
Abstract
In recent decades, additive manufacturing technology or 3D printing has attracted the attention of many researchers. This manufacturing method has made it possible to directly fabricate parts of the desired design, to manufacture complex parts that were practically impossible to produce with conventional manufacturing methods, and to reduce the consumption of raw materials. Additive manufacturing has become a suitable method for manufacturing parts in both academic and industrial fields. In this research, the goal is to construct a porous kaolin substrate in order to achieve an ideal ratio of water to clay. Considering the percentage of water and raw material and printing by extrusion method, the optimum percentage is equivalent to 40% water and 60% raw material. Comparing the XRD results showed that the kaolinite phase changed to metakaolin after heating, and the scanning electron microscopy and energy-dispersive spectroscopy results showed the microstructure of kaolinite and metakaolin and its constituent elements, respectively. Also, using the Archimedes method, the density of the samples with three-dimensional structure after heat treatment was measured, which was 2.2, 2.9, 2.4, and 2.49 g/cm3 for the samples heat-treated at temperatures of 1100, 1000, 900, and 1200, respectively.
Keywords
Additive manufacturing technology
porous substrate
3D extrusion printing
kaolinite

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  • Receive Date 29 August 2023
  • Revise Date 25 September 2025
  • Accept Date 19 June 2024