Hydroxyapatite coating on silicon nitride surfaces using the biomimetic method

Materials Research

Cecilia Chaves Guedes E Silva²  Eliana Cristina Da Silva Rigo¹  Juliana Marchi¹  Ana Helena De Almeida Bressiani¹  José Carlos Bressiani¹ 

[1] ,Centro Tecnológico da Marinha em São PauloSão Paulo SP ,Brazil

关键词: bioceramic;    silicon nitride;    biomimetic method;    hydroxyapatite;   

DOI  :  10.1590/S1516-14392008000100009

来源: SciELO

【 摘 要 】

Silicon nitride based ceramics are promising candidates for biomedical applications due to their chemical and dimensional stability associated to suitable mechanical strength and relatively high fracture toughness. However, the bioinert characteristics of these ceramics limit their application to situations where the formation of chemical bonds between the material and the tissue are not essential. A way to broaden the application field of these ceramics in medicine is promoting their bioactivity by means of a hydroxyapatite coating. Therefore, in this paper, samples of silicon nitride were coated with apatite using the biomimetic method. The treated silicon nitride surface was characterized by diffuse reflectance infrared Fourier transformed, X ray diffraction and scanning electron microscopy. The results showed that a layer of hydroxyapatite could be deposited by this method on silicon nitride samples surface.

【 授权许可】

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