Conventional Powder Metallurgy Process and Characterization of Porous Titanium for Biomedical Applications

Co3O4 powder was added to barium hexaferrite by powder metallurgy process to determine its effect on the magnetic properties. The variation of the addition of Co3O4 are 0.0, 0.5, 1.0, 2.0, 3.0, and 5.0 wt%. Characterization and magnetic testing included density calculation, Permagraph test, and XRD were performed in order to elucidate the effect of Co3O4 addition to its structure and magnetic properties of barium hexaferrite. The magnetic density obtained was in the ranges of 3.2 - 4.35 g/cm3. From the permagraph test, it is found that the value of remanence (Br) was in between 1.18 and 1.5 kG. The value of coercivity (Hc) was in the range of 0.594 - 3.366 kOe, and the maximum product energy (BHmax) was found to be in between 0.07 and 0.48 MGOe. From the XRD analysis, it was found that two types of barium hexaferrite were formed, namely barium hexaferrite type M(BaFe12O19) and X(Ba2Fe30O46). It is concluded that the addition of the Co3O4 compound increased the value of magnetic density and decreased magnetic properties.

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Fabrication and characterization of americium, neptunium and curium bearing MOX fuels obtained by powder metallurgy process

Journal of Nuclear Materials ◽

10.1016/j.jnucmat.2011.10.016 ◽

2012 ◽

Vol 420 (1-3) ◽

pp. 213-217 ◽

Cited By ~ 31

Author(s):

Florent Lebreton ◽

Damien Prieur ◽

Aurélien Jankowiak ◽

Magaly Tribet ◽

Caroline Leorier ◽

...

Keyword(s):

Powder Metallurgy ◽

Powder Metallurgy Process ◽

Fabrication And Characterization ◽

Metallurgy Process

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Effects of pore size and porosity on cytocompatibility and osteogenic differentiation of porous titanium

Journal of Materials Science Materials in Medicine ◽

10.1007/s10856-021-06548-0 ◽

2021 ◽

Vol 32 (6) ◽

Author(s):

Yi-tong Yao ◽

Yue Yang ◽

Qi Ye ◽

Shan-shan Cao ◽

Xin-ping Zhang ◽

...

Keyword(s):

Cell Differentiation ◽

Powder Metallurgy ◽

Pore Size ◽

Osteogenic Differentiation ◽

Average Pore Size ◽

Porous Titanium ◽

Average Pore ◽

Porous Ti ◽

Powder Metallurgy Process ◽

Metallurgy Process

AbstractTo find out the optimal porosity and pore size of porous titanium (Ti) regarding the cytocompatibility and osteogenic differentiation. Six groups of porous Ti samples with different porosities and pore sizes were fabricated by the powder metallurgy process. The microstructure and compressive mechanical properties were characterized. The cytocompatibility was examined by a series of biological tests as protein absorption with BCA assay kit, cell attachment with laser scanning confocal microscopy and vinculin expression, cell proliferation with CCK-8 assay. Cell differentiation and calcification were detected by qPCR and Alizarin Red S dying respectively. Pores distributed homogeneously throughout the porous Ti samples. The compressive test results showed that Young’s modulus ranged from 2.80 ± 0.03 GPa to 5.43 ± 0.34 GPa and the compressive strength increased from 112.4 ± 3.6 MPa to 231.1 ± 9.4 MPa. Porous Ti with high porosity (53.3 ± 1.2%) and small pore size (191.6 ± 3.7 μm) adsorbed more proteins. More MC3T3-E1 cells adhered onto dense Ti samples than onto any other porous ones already after culture and no difference was identified within the porous groups. The porous structure of porous Ti with a porosity of 53.3 ± 1.2% and an average pore size of 191.6 ± 3.7 μm facilitated cell differentiation and calcification. Small pores were not beneficial to the osteo-initiation at the very beginning. Porous Ti with a porosity of 53.3 ± 1.2% and an average pore size of 191.6 ± 3.7 μm fabricated by powder metallurgy process showed the expected mechanical property and improved osseointegration as implants in dental treatment.

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