Sinterabilidade de pós de precursor vitrocerâmico do sistema LZSA tratados por troca iônica

Química Nova

Oscar Rubem Klegues Montedo²  Patrícia Ronsani¹  Antonio Pedro Novaes De Oliveira¹ 

[1] ,Universidade do Extremo Sul CatarinenseCriciúma SC ,Brasil

关键词: glassceramics;    ion exchange;    sintering;   

DOI  :  10.1590/S0100-40422012000400006

来源: SciELO

【 摘 要 】

Ion exchange method was employed by means of surface modification of the glass powders of LZSA (Li2O-ZrO2-SiO2-Al2O3) system submitted to a 70wt% NaNO3/30wt% NaSO4 bath salt followed by a heat treatment. Chemical analysis by X-ray fluorescence was used to evaluate the efficiency of ion exchange, while optical dilatometry was employed to evaluate sintering of compacts. Evaluation of the structure of sintered bodies was made by scanning electron microscopy. Substitution of Li+ ions by Na+ ions on the surface of powders during heat treatments of 450 and 600 ºC for 2-10 h promoted an increase in densification of the sintered bodies.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License