CORROSION IN COPPER PIPES USED FOR TRANSPORTING HOT WATER
Authors
Wagner Sade
Centro Tecnológico do Estado de Minas Gerais - CETEC
Everton Galvão de Neiva
Rede Temática em Engenharia de Materiais - REDEMAT
José Roberto Tavares Branco
Centro Tecnológico do Estado de Minas Gerais - CETEC
Abstract
This work presents a study of the corrosion in copper pipes used in the hydraulic installations of solar absorbers. The occurrence of falls like cracking and degradation resulted in leakage of water and damages to users. It was realized the chemical composition and macro analysis of samples as they were received. The samples were examined on Optical Microscope (OM) and on the Scanning Electron Microscope (SEM). It was investigated the propagation of cracking and products from corrosion. Before a micro analysis, some samples were coated with chemical Ni in order to preserve the profile of cracking.
Keywords: solar absorbers, copper pipes, cracking, corrosion.
Author Biographies
Wagner Sade, Centro Tecnológico do Estado de Minas Gerais - CETEC
Doutorando da Rede Temática em Engenharia de Materiais - REDEMAT. UFOP, CETEC, UEMG. Ouro Preto, MG.
Everton Galvão de Neiva, Rede Temática em Engenharia de Materiais - REDEMAT
MSc. em Engenharia de Materiais - REDEMAT.
José Roberto Tavares Branco, Centro Tecnológico do Estado de Minas Gerais - CETEC
PhD-Pesquisador pleno da Fundação Centro Tecnológico do Estado de Minas Gerais - CETEC, Belo Horizonte, MG.
