Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy

Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy

Influence of solid solution temperature on microstructures and corrosion properties of CoNiCrMo alloy were investigated by means of optical microscopy (OM), scanning electron microscope (SEM) and electronic differential system. The corrosion resistance of CoNiCrMo alloy in 0.9%NaCl aqueous solution was also investigated. The results indicated that with the increase of solution treatment temperature, the dendrites of CoNiCrMo alloy gradually disappeared. Thus, the corrosion resistance of the alloy decreased. When the solution temperature is 1200ºC, the dendrites almost disappeared and most carbide dissolved, and begins to spheroidization. The corrosion resistance of CoNiCrMo alloy treated at 1000ºC for 1h is the highest than the one at 1100 ºC and 1200ºC. Its self-corrosion potential is -424mV and self-corrosion current density is 1.02×10-8A/cm2.

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Main Authors: Chu,Ya-jie, Hao,Ben-xing, Liu,Peng, Zhang,Yuan-bin
Format: Digital revista
Language:English
Published: ABM, ABC, ABPol 2019
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500212
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spelling oai:scielo:S1516-143920190005002122019-10-24Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo AlloyChu,Ya-jieHao,Ben-xingLiu,PengZhang,Yuan-bin Co-based alloys heat treatment corrosion resistance microstructure Influence of solid solution temperature on microstructures and corrosion properties of CoNiCrMo alloy were investigated by means of optical microscopy (OM), scanning electron microscope (SEM) and electronic differential system. The corrosion resistance of CoNiCrMo alloy in 0.9%NaCl aqueous solution was also investigated. The results indicated that with the increase of solution treatment temperature, the dendrites of CoNiCrMo alloy gradually disappeared. Thus, the corrosion resistance of the alloy decreased. When the solution temperature is 1200ºC, the dendrites almost disappeared and most carbide dissolved, and begins to spheroidization. The corrosion resistance of CoNiCrMo alloy treated at 1000ºC for 1h is the highest than the one at 1100 ºC and 1200ºC. Its self-corrosion potential is -424mV and self-corrosion current density is 1.02×10-8A/cm2.info:eu-repo/semantics/openAccessABM, ABC, ABPolMaterials Research v.22 n.5 20192019-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500212en10.1590/1980-5373-mr-2019-0068
institution SCIELO
collection OJS
country Brasil
countrycode BR
component Revista
access En linea
databasecode rev-scielo-br
tag revista
region America del Sur
libraryname SciELO
language English
format Digital
author Chu,Ya-jie
Hao,Ben-xing
Liu,Peng
Zhang,Yuan-bin
spellingShingle Chu,Ya-jie
Hao,Ben-xing
Liu,Peng
Zhang,Yuan-bin
Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
author_facet Chu,Ya-jie
Hao,Ben-xing
Liu,Peng
Zhang,Yuan-bin
author_sort Chu,Ya-jie
title Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
title_short Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
title_full Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
title_fullStr Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
title_full_unstemmed Effect of Solid Solution Temperature on Microstructure and Corrosion Resistance of CoNiCrMo Alloy
title_sort effect of solid solution temperature on microstructure and corrosion resistance of conicrmo alloy
description Influence of solid solution temperature on microstructures and corrosion properties of CoNiCrMo alloy were investigated by means of optical microscopy (OM), scanning electron microscope (SEM) and electronic differential system. The corrosion resistance of CoNiCrMo alloy in 0.9%NaCl aqueous solution was also investigated. The results indicated that with the increase of solution treatment temperature, the dendrites of CoNiCrMo alloy gradually disappeared. Thus, the corrosion resistance of the alloy decreased. When the solution temperature is 1200ºC, the dendrites almost disappeared and most carbide dissolved, and begins to spheroidization. The corrosion resistance of CoNiCrMo alloy treated at 1000ºC for 1h is the highest than the one at 1100 ºC and 1200ºC. Its self-corrosion potential is -424mV and self-corrosion current density is 1.02×10-8A/cm2.
publisher ABM, ABC, ABPol
publishDate 2019
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000500212
work_keys_str_mv AT chuyajie effectofsolidsolutiontemperatureonmicrostructureandcorrosionresistanceofconicrmoalloy
AT haobenxing effectofsolidsolutiontemperatureonmicrostructureandcorrosionresistanceofconicrmoalloy
AT liupeng effectofsolidsolutiontemperatureonmicrostructureandcorrosionresistanceofconicrmoalloy
AT zhangyuanbin effectofsolidsolutiontemperatureonmicrostructureandcorrosionresistanceofconicrmoalloy
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