The European Ceramic Society


Sep 11, 2020

Tape casting of Si3N4 based bioceramics by Yasemin Tabak

YCN Research in Spot - September 2020

Silicon nitride is one of the materials that has high potential to be utilized in biomaterials field due to its superior properties like high strength, good chemical stability, high fracture toughness, high hardness, low friction coefficient and good wear resistance. 
In my doctoral thesis, that was conducted within the framework of a bilateral project between the Slovak Academy of Sciences (SAS) and Marmara Research Center (MRC) of the Scientific and Technological Research Council of Turkey (TUBITAK), the aim was to develop a composite ceramic biomaterial similar to human bone with defined porosity. Porous Si3N4 ceramics having “bone-like” micro and macro pores were produced using tape casting method by the project team at the Materials Institute of TUBITAK MRC.
A number of prescriptions were tried to produce the bone-like functionally graded porous Si3N4 ceramics by using different alcohols and adding various dispersing agents, binders, plasticizers and pore-forming agents. Tapes produced by tape casting method were laminated and pressed according to their properties and sintered at different temperatures after the removal of binder. Porous Si3N4 material was then coated with hydroxyapatite and its interaction was investigated. Microstructural examination, 3D tomography, mechanical and biological tests were carried on the final samples and the results were evaluated. Eventually a bioceramic material, with bone-like microstructure, based on silicon nitride, containing micro-and micro pores with gradual transition was developed. The studies are still in progress and the product is expected to respond to the special needs of patients in need of orthopedics and spine surgery.
Green samples (with varying porosity) produced by tape casting
Dr. Yasemin Tabak
TUBITAK Marmara Research Center
Materials Institute

Last news

Jul 4, 2024
ACerS is offering travelling grants of 1.500 $ to attend the two 2024 ECerS Summer Schools

The grants can be allowed to undergraduate, graduate, and Ph.D. students from non-European based universities. The 2024 ECerS Summer Schools will be held prior to Electroceramics XIX (Vilnius, Lithuania - School: 17-18 August 2024)  and Shaping 9 (Warsaw, Poland - School: 24-25 September 2024)!

Jun 27, 2024
2024 ECerS International Ceramist Student Exchange Program – 3rd call!

In the frame of the 2024 ECerS International Student exchange program, ECerS is opening a third call, this time to allow grants to European Students to attend the 2024 Fall meeting of Korean Ceramic Society (COEX) that will be organised by the Korean Ceramic Society in Seoul, Korea, from 16th to 18th October 2024.


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