Navegação Engenharias por Autor "Knörnschild, Gerhard Hans"
Resultados 1-5 de 5
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Comparative studies of WC-Co-Ni composites obtained by conventional powder metallurgy
Martins, Vinicius; Rodrigues, Wilson Correa; Ferrandini, Peterson Luiz; Villarinho, Denis Jardim; Knörnschild, Gerhard Hans; Schaeffer, Lirio (2011) [Artigo de periódico]The present work reports a comparative study of cemented carbides of compositions WC-6Co, WC-10Co, WC-20Co, WC-6Co-6Ni and WC-12Ni-6Co. The purpose was to study the powder metallurgical production process of these compositions ... -
Electron microscopic studies of anodic oxide films on the AZ91HP alloy
Barbosa, Daniel Peixoto; Knörnschild, Gerhard Hans; Strunk, Horst Paul (2003) [Artigo de periódico] -
Soil corrosion of the AISI1020 steel buried near electrical power transmission line towers
Fraga, Anderson de Oliveira; Klunk, Marcos Antonio; Oliveira, Adriano Agnoletto; Furtado, Gilnei Goncalves; Knörnschild, Gerhard Hans; Dick, Luis Frederico Pinheiro (2014) [Artigo de periódico]Soil corrosion of carbon steel samples buried up to hundred days close to a high voltage power transmission line tower was examined by weight loss vs. time. A higher weight loss was observed if the samples were electrically ... -
A study of Al-Mo powder processing as a possible way to corrosion resistent aluminum-alloys
Rodrigues, Wilson Correa; Mallqui Espinoza, Fidel Romel; Schaeffer, Lirio; Knörnschild, Gerhard Hans (2009) [Artigo de periódico]Elementary Al and Mo powder mixtures have been processed by high energy ball milling up to milling times of 100 hours. The shift of the pitting potential and the X ray analysis of green milled samples showed that part of ... -
The negative-difference effect during the localized corrosion of magnesium and of the AZ91HP alloy
Weber, Cristina Rejane; Knörnschild, Gerhard Hans; Dick, Luis Frederico Pinheiro (2003) [Artigo de periódico]Foram realizados testes galvanostáticos em soluções de NaCl com magnésio puro e com a liga AZ91HP, tendo sido medido o volume de hidrogênio desprendido durante os testes. A fim de estudar o efeito da diferença negativa ...