Nanocrystalline powders based on ZrO2 for biomedical applications and power engineering

被引：11

作者：

Shevchenko, AV ^{[1
]}

Dudnik, EV ^{[1
]}

Ruban, AK ^{[1
]}

Red'ko, VP ^{[1
]}

Vereschaka, VM ^{[1
]}

Lopato, LM ^{[1
]}

机构：

[1] Natl Acad Sci Ukraine, Inst Problems Mat Sci, UA-252143 Kiev, Ukraine

来源：

POWDER METALLURGY AND METAL CERAMICS | 2002年 / 41卷 / 11-12期

关键词：

zirconia; alumina; powder nanocrystalline; synthesis hydrothermal; phase transition;

D O I：

10.1023/A:1022962200154

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An 80 mass% ZrO2 - 20 mass% Al2O3 powder was produced using a complex method which integrates sol-gel technology and hydrothermal synthesis. The specific surface areas of the powder varied from 39 to 5.3 m(2)/g depending on the thermal treatment conditions. Metastable F-ZrO2 formed after powder annealing at 400degreesC. The phase transformation F-ZrO2 --> 4 T-ZrO2 (traces of M-ZrO2) occurred under powder thermal treatment from 700 to 1000degreesC. Only Theta-Al2O3 was detected under experimental conditions. The powder was characterized by sintering activity. Operating the processes under powder thermal treatment in the ZrO2 - Y2O3 - CeO2 - Al2O3 system will allow one to produce a variety of ceramic microstructures from fine-grained to "self-reinforced." These powders can be used in manufacturing surgical, cutting tools as well as in ceramic passive bioimplants and solid electrolytes for fuel elements.

引用

页码：558 / 563

页数：6

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