Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Processing of Titanium Porous Bodies by Foaming of Gelled Aqueous Suspensions of Powders

Version 1 : Received: 2 February 2021 / Approved: 4 February 2021 / Online: 4 February 2021 (09:15:34 CET)

How to cite: Gonzalez, Z.; Molero, E.; Sanchez, J.; Ferrari, B. Processing of Titanium Porous Bodies by Foaming of Gelled Aqueous Suspensions of Powders. Preprints 2021, 2021020099 (doi: 10.20944/preprints202102.0099.v1). Gonzalez, Z.; Molero, E.; Sanchez, J.; Ferrari, B. Processing of Titanium Porous Bodies by Foaming of Gelled Aqueous Suspensions of Powders. Preprints 2021, 2021020099 (doi: 10.20944/preprints202102.0099.v1).

Abstract

Use of porous titanium (Ti) and Ti alloys in orthopedic implants or in light structures requires processing routes that could generate an as-much-as possible control in the pores amount, shape, size and connectivity. In this work, a colloidal approach to the processing of Ti porous structures by the inside foaming of a porogen into a gelled high solid content aqueous suspension of Ti powders, is presented. The prepared slurries contained different amounts of Methyl Cellulose (MC) as gelling agent (8, 10 and 12 g/L) and ammonium bicarbonate (BA) as porogen (15, 20, 25 wt. %). The gel-casted samples were heated at mild temperatures ranging (60, 70 and 80 °C) to promote the gelation and produce, at the same time, the porosity by the thermal decomposition of the ammonium bicarbonate. Different structures are obtained depending on the combination of the study variables

Subject Areas

Powder; bio compatibility

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