Micro-CT analysis and mechanical properties of Ti spherical and polyhedral void composites made with saccharose as a space holder material

• Published in: Materials characterization 2015-02, Vol.100, p.13-20
• Main Authors: Jakubowicz, J., Adamek, G., Pałka, K., Andrzejewski, D.
• Format: Article
• Language: English
• Subjects: COMPOSITE MATERIALS; COMPRESSION STRENGTH; Compressive strength; COMPUTERIZED TOMOGRAPHY; CORRELATIONS; Elastic modulus; Formations; MATERIALS SCIENCE; Mechanical properties; Micro-CT; Morphology; Porosity; POWDERS; PRESSURE RANGE MEGA PA; SACCHAROSE; Saccharose space holder; SCANNING ELECTRON MICROSCOPY; SINTERING; SOLIDS; TITANIUM; Tomography; Void metal composite; Voids
• ISSN: 1044-5803; 1873-4189
• DOI: 10.1016/j.matchar.2014.12.006

The paper describes the formation, morphology and mechanical properties of Ti void composites. The Ti void composites were made using 100 and 325mesh Ti powder for solid scaffold formation. The spherical and polyhedral voids (pores) were formed using saccharose particles (table sugar) of different shapes. The Ti void composite morphology was investigated by microcomputed tomography and scanning electron microscopy. The Ti void composites of designed porosity of 50–70% were made. Compression test was applied for mechanical properties estimation. It has been found, that Ti void composites made from 100mesh Ti and those having spherical pores have a higher strength and elastic modulus, i.e. for the designed porosity of 50% for 100 and 325mesh Ti void composites, a compressive strength was 32.32 and 20.13MPa, respectively. It has been shown that this is related to better sintering of the 100mesh Ti powders compared with the 325mesh Ti powders. A correlation between microcomputed tomography data and mechanical properties has also been shown. The Ti void composites, made with the use of saccharose as a space holder, described in this work should be a promising material for biomedical applications, where interconnected pores and good mechanical properties are required. •Ti scaffolds of the porosity of 50–70% were made.•Saccharose particles as space holder were applied.•The voids in the scaffolds were designed with spherical and polyhedral shape.•The scaffold structure was investigated by SEM and micro-CT.•Micro-CT data and mechanical properties of the Ti scaffold have been correlated.