Banca de QUALIFICAÇÃO: MARIA DE FÁTIMA DANTAS E SILVA

Uma banca de QUALIFICAÇÃO de DOUTORADO foi cadastrada pelo programa.
DISCENTE : MARIA DE FÁTIMA DANTAS E SILVA
DATA : 14/06/2017
HORA: 15:00
LOCAL: Auditório do NUPPRAR
TÍTULO:

PIGMENTS BASED ON SHALE AND IMPREGNATED WITH METALS FOR APPLICATION IN CERAMIC COATINGS.

PALAVRAS-CHAVES:

Shale, Inorganic pigments, Impregnation, Ceramic enamels.

PÁGINAS: 96
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Cerâmicos
RESUMO:

Like most industries, the ceramic industry felt the need for the development of new pigments for the production of floors and coatings, in order to meet the demand of ceramics for the decoration of domestic and commercial environments. Given this, there is a great interest in developing new materials that are in accordance with environmental preservation and that are relatively low cost. Retried shale (XR) is a waste from the shale industry, which improperly stored or stored can cause damage to the environment and health. The objective of this study is to evaluate the viability of this material, retort shale and retorted shale impregnated with metals, to obtain pigments that stably color several ceramic matrices; Trying to understand which parameters influence the pigmentation of the enamels. The XR-based pigments were prepared by a novel synthetic route, impregnated via wet and calcined at 700 and 900 ° C. These pigments were characterized by X-Ray Fluorescence (FRX), X-ray Diffraction (XRD), Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM) spectroscopy in UV-Visible region and Colorimetry. The results confirm the probability of the new route of synthesis, indicating that the use of XR and XR impregnated with iron and chromium nitrate, have been favorable processes, since they have the advantage of being simple, low cost and reduces the environmental impact caused For this waste. The pigments have beige, red and light brown shades according to the impregnation and their calcination temperatures.

MEMBROS DA BANCA:
Presidente - 6347420 - MARCUS ANTONIO DE FREITAS MELO
Externo à Instituição - ASENETE FRUTUOSO DA COSTA - UFRN
Externo à Instituição - PATRICIA MENDONCA PIMENTEL - UFERSA