Rajasakaran, Yarshine Rani (2023) Development of stainless steel foam with ha bio active ceramic addition using slurry method. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Abstract

This present study focuses on fabricating of Stainless-Steel Foam with Bio Active Ceramic addition using slurry method. The mechanical and physical properties of stainless steel is still not perfectly adequate for medical implants requirements. Therefore, the slurry method is mainly focused on increasing the mechanical and physical properties of the stainless-steel foams with hydroxyapatite addition. The samples were produced with different compositions of SS316L and HA powders were mixed together with binders which were polyethylene glycol (PEG) and carboxymethyl cellulose (CMC) to prepare slurry solution for impregnation of polyurethane (PU) sponge as the template. SS316L-HA foam were fabricated by slurry method and sintered at various sintering parameters. The physical and mechanical properties were determined for each sample of SS316L-HA foam by analysis of shrinkage, apparent porosity, apparent density, compressive strength and microstructure analysis. Following optimization, the SS316L-HA foam produced was found to have attractive mechanical and physical properties much like human bone. The suitable percentages of HA via slurry method are 1%-5%. Notwithstanding, this included the average shrinkage occurs at the sintering temperature of 1350°C with 1wt% of Hydroxyapatite are 26.54%. The average porosity was obtained at temperature 1150˚C with 59.88% of 3wt% of HA. The average density obtained for SS316L-HA foam are 3.83g/cm3, sintered at 1350˚C of 1wt.% HA. The maximum value of yield strength was 18.85Mpa with 10wt.% HA, sintered at temperature 1300°C. The maximum value of modulus elasticity was 0.49GPa with 10wt.% HA, sintered at temperature 1150°C. The average pore size for all SS316L-HA foam samples are in the range of 310 μm to 386 μm. These results are fulfill the objectives of development of stainless-steel foam with bio active ceramic addition using slurry method

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