A quantitative analysis of the laser sintering of bismuth titanate ceramics

被引：19

作者：

Macedo, ZS

Hernandes, AC

机构：

[1] Univ Fed Sergipe, Dept Fis, BR-49100000 Sao Cristovao, SE, Brazil

[2] Univ Sao Paulo, Inst Fis Sao Carlos, Grp Grescimento Cristais & Mat Ceram, BR-13560970 Sao Carlos, SP, Brazil

来源：

MATERIALS LETTERS | 2005年 / 59卷 / 27期

基金：

巴西圣保罗研究基金会;

关键词：

ceramics; laser sintering; microstructure;

D O I：

10.1016/j.matlet.2005.06.013

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The aim of this study was to identify the main differences on the kinetic aspects of conventional and laser sintering of bismuth titanate Bi4Ti3O12. The linear shrinkage, relative density and average grain size of the ceramics were measured for initial, intermediate and final stages of laser and conventional sintering. It was observed that laser sintering was 10 times faster than the conventional sintering processes. Also laser sintered ceramics reach 99% density at significantly lower temperatures than that registered for the conventional process. Theoretical models were fitted to the experimental data in order to determine the kinetic sintering parameters. Remarkable differences were observed between the activation energy (initial and final stages) and mass transport mechanism (final stage) determined for the laser and conventional sintering. (C) 2005 Elsevier B.V. All rights reserved.

引用

页码：3456 / 3461

页数：6

共 15 条

[11] Laser sintering of Bi4Ti3O12 ferroelectric ceramics [J].

Macedo, ZS ;

Hernandes, AC .

MATERIALS LETTERS, 2002, 55 (04) :217-220

[12]

MACEDO ZS, 2000, CERAMICA, V46, P196, DOI DOI 10.1590/S0366-6913

[13] Characteristics of laser diode bar and stack with jet-type, water-cooled heatsink [J].

Miyajima, H ;

Kan, H ;

Furuta, S ;

Uchiyama, T ;

Oishi, S ;

Yamanaka, M ;

Izawa, Y ;

Nakai, S .

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS, 2004, 43 (9A) :6074-6078

[14]

Tebcheran S. M., 2003, Cerâmica, V49, P99, DOI 10.1590/S0366-69132003000200007

[15] NONISOTHERMAL TECHNIQUES FOR STUDYING INITAL-STAGE SINTERING [J].

WOOLFREY, JL ;

BANNISTER, MJ .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1972, 55 (08) :390-+

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