Synthesis of Bioactive Glass Powder using Sol-Gel Method and Shaping using Plasma Spark Sintering

Mehdi Mohsenpour Tehrani¹ and Manocher Sobhani²

¹Department of Technical and Engineering, Faculty of Materials and Ceramics, Shahroud Branch, IAU ( Islamic Azad University) Shahroud, Iran.

²Faculty of Material and Metallurgical Engineering, University of Semnan, Iran.

Corresponding Author E-mail: mahdipourtehrani96@gmail.com

DOI : http://dx.doi.org/10.13005/bbra/2600

ABSTRACT: In the present study, the synthesis of bioactive glass powder is carried out using the sol-gel method and in an acidic environment. TEOS (Tetraethyl orthosilicate) is used as the raw material of supplying Silica and TEP (three ethyl phosphates) is used as the raw material for providing phosphate powder compounds. Synthesis is done without water and using pure alcohol solvent 99.99%. After preparation of powder from the gel and drying it, the heat treatment process was performed at 500, 550 and 600 C for 2 hours on the powder. Thus, the bioactive glass powder was prepared for the SPS stage. In the present study due to technological limitations (impossibility of access to the high pressures of the SPS device used), at the formation stage, the maximum force of 20 tons was selected using the SPS device. Experiments performed on the powder include XRD and DTA. The results of this research show that performing heat treatment at a maximum temperature of 550°C with the aim of increasing the maintenance of the amorphous structure of the product is the most ideal temperature for heat treatment. Also, the use of suitable molds in the SPS process with a tolerance of up to 300 MPa is a requirement of the process.

KEYWORDS: Glass Powder Synthesis; Sol-Gel; Plasma Spark Plug; TEP XRD;

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