Banca de DEFESA: KELSON DE SOUSA LEITE

Uma banca de DEFESA de DOUTORADO foi cadastrada pelo programa.
DISCENTE: KELSON DE SOUSA LEITE
DATA: 31/07/2023
HORA: 14:30
LOCAL: Auditório do PPGCM/UFPI
TÍTULO: LIQUID FROM CASHEW NUTS AS AN ANTICORROSIVE AGENT IN CERAMIC MATERIALS
PALAVRAS-CHAVES: clay; corrosion; green inhibitor; coating
PÁGINAS: 74
GRANDE ÁREA: Engenharias
ÁREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Materiais Não-Metálicos
ESPECIALIDADE: Cerâmicos
RESUMO:

Corrosion is a natural phenomenon and a problem of worldwide importance, the scope of which is consistent with the revolutionary changes in material development witnessed in recent years. One of the great challenges of the ceramic industry is to increase the corrosion resistance of ceramic materials, and the study of this corrosion requires a detailed investigation using several characterization methods. This corrosion resistance can be further improved by using a protective coating on the surface of ceramic materials such as Cashew Nut Shell Liquid (CNSL), which has been used as na environmentally friendly corrosion inhibitor. This work investigated the application of CNSL as an organic anticorrosive coating on the surface of ceramic materials. The clay for making prismatic specimens was obtained from the soil in northeastern Brazil. Some sets of these prismatic specimens were plated in CNSL and subjected to immersion and salt spray corrosion tests, along with other sets of specimens not plated with CNSL for future comparison. At the end of 70 days in a corrosive environment, the ceramic specimens without CNSL showed signs of wear on the surface, associated with an average weight loss of 20 mg and an average corrosion rate of 0.017 mm/year for the immersion corrosion test, and, average mass loss of 90 mg with a corrosion rate of 0.076 mm/year for the salt spray corrosion test. On the other hand, the bodies bathed in CNSL did not show an average mass loss in the immersion test. They showed na average mass loss 4.5 times lower than the bodies without this liquid for the saline mist test, reinforcing the potential of CNSL as an agent corrosion protector.

MEMBROS DA BANCA:
Presidente - 1714193 - JOSE MILTON ELIAS DE MATOS
Interno - 1720808 - RENATA BARBOSA
Interno - 1331130 - TATIANNY SOARES ALVES
Externo à Instituição - GILVAN MOREIRA DA PAZ - IFPI
Externo à Instituição - KELSON SILVA DE ALMEIDA - IFPI