Perspectives of the Si3N4-TiN ceramic composite as a biomaterial and manufacturing of complex-shaped implantable devices by electrical discharge machining (EDM)

被引：0
作者：
Bucciotti, Francesco [2 ]
Mazzocchi, Mauro [1 ]
Bellosi, Alida [1 ]
机构：
[1] CNR, Inst Sci & Technol Ceram, I-48018 Faenza, Italy
[2] CNR, Ins Sci & Technol Ceram, Turin, Italy
来源：
JOURNAL OF APPLIED BIOMATERIALS & BIOMECHANICS | 2010年 / 8卷 / 01期
关键词：
Silicon nitride; Titanium nitride; Electrical discharge machining; Implantable devices; Ceramic composite; STRUCTURAL ORTHOPEDIC IMPLANTS; LONG-TERM OXIDATION; SILICON-NITRIDE; MECHANICAL-PROPERTIES; MICROSTRUCTURE; DENSIFICATION; DEGRADATION;
D O I：
暂无
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Purpose: In this work we investigated the suitability of electroconductive silicon nitride/titanium nitride composite for biomedical implantable devices with particular attention on the processing route that allows the net-shaping of complex components by electrical discharge machining (EDM). Methods: The composite, constituted mainly of a beta-Si3N4, dispersed TiN grains and a glassy grain boundary phase, exhibited a low density and high hardness, strength and toughness. Bulk, surface characteristics and properties of the Si3N4-TiN composite were analyzed. After the EDM process, the microstructure of the machined surface was examined. Results and Conclusions: The obtained results showed that the Si3N4-TiN ceramic composite together with the EDM manufacturing process might potentially play a key role in implantable load-bearing prosthesis applications. (Journal of Applied Biomaterials & Biomechanics 2010; 8: 28-32)
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页码：28 / 32
页数：5
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