期刊
MICROCHEMICAL JOURNAL
卷 97, 期 2, 页码 101-108出版社
ELSEVIER
DOI: 10.1016/j.microc.2010.07.012
关键词
Biomorphic ceramics; SiC; Multivariate optimization; FTIR; ETAAS; Microwave dissolution
资金
- Spanish Ministerio de Ciencia y Tecnologia (MCyT) [CTQ 2006-00735]
- FEDER
- Junta de Andalucia
Biomorphic silicon carbide ceramics are a new class of materials that are used for various industrial applications owing to its attractive properties. The efficiency of the synthesis and the partly extreme properties of the biomorphic ceramic depend decisively on the synthesis parameters and on the impurities of the final ceramic. In the present article the synthesis as well as the decomposition of these materials is optimized using a multivariate methodology for the design of experiments. Three variables (initial amount of Si, infiltration temperature and reaction time) were considered as factors in the synthesis optimization and six variables (digestion time, ramp time, microwave power, volumes of concentrated HF, HNO3 and H2SO4) in the microwave dissolution optimization. Interactions, between analytical factors and their optimised levels were investigated using full factorial, Plackett-Burman and central composite designs. The synthesis parameters that found higher percentage of SiC (quantified by FTIR) and the digestion procedure that found higher concentrations of metals (Co, Cr and Ni, determined by FI-ETAAS) were considered the optimum. (C) 2010 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据