Paper Title:
Processing of Layered Hydroxyapatite Ceramic Composites
  Abstract

Layered hydroxyapatite (HA) based ceramic composites consisting of a strong ceramic composite core, 3 mol% yttrium stabilized zirconia (3Y-TZP) with 30 or 40 vol% HA, and a HA-rich porous coating were fabricated using a coating deposition and co-sintering process in the present study. The aim is to develop HA-based bio-ceramic composites that retain the bio-compatibility of HA and the preferred scaffold structure, but have much improved structural properties required for implants. Two different coating techniques, sol-gel derive HA coating and HA solution coating, have been used to deposit the HA coating on the strong HA-containing 3Y-TZP core, which has been pre-sintered at 900°C and has a green-machined surface finish. The upper limit for the final sintering of the layered ceramic composites is set at 1,350°C based on the individual sintering properties of HA and 3Y-TZP. SEM observations have been conducted on the coating surface, sectioned surface of coating and substrate/core to characterize the microstructures of coating and substrate and their interface. Preliminary mechanical tests and XRD tests are also performed to characterise the structural properties at different temperatures.

  Info
Periodical
Edited by
George Ferguson, Ashvin Thambyah, Michael A Hodgson and Kelly Wade
Pages
143-146
DOI
10.4028/www.scientific.net/AMR.275.143
Citation
R. Sultana, J. Z. Yang, X. Z. Hu, "Processing of Layered Hydroxyapatite Ceramic Composites", Advanced Materials Research, Vol. 275, pp. 143-146, 2011
Online since
July 2011
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jae Ho Jeon, Hai Tao Fang, Zhong Hong Lai, Zhong Da Yin
Abstract:The concept of functionally graded materials (FGMs) was originated in the research field of thermal barrier coatings. Continuous changes in...
1851
Authors: Tae Ho Shin, Ji Heang Yu, Shi Woo Lee, In Sub Han, Doo Won Seo, Ki Seok Hong, Sang Kuk Woo, Sang Hoon Hyun
1114
Authors: Ying Chun Wang, Jian Guo Li, Yaohe Zhou
Abstract:Hydroxyapatite(HAP) has excellent osteoconductive properties. By controlling the Ca/P ratio better biphasic calcium phosphate ceramics can...
625
Authors: N. R. Ha, Z. X. Yang, Kyu Hong Hwang, J. K. Lee
Abstract:Pure Titanium alloys are superiorities of biocompatibility, mechanical properties and chemical stability. The biocompatibility of Ti alloy...
177
Authors: Zong Yin Duan, Dong Sheng Wang
Chapter 12: Laser Processing Technology
Abstract:This paper deals with the microstructure and thermal shock behavior of laser remelting of yttria-stabilized zirconia (YSZ) thermal barrier...
2502