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

被引：0

作者：

Chu, Ya-jie ^{[1
,2
]}

Hao, Ben-xing ^{[1
]}

Liu, Peng ^{[3
]}

Zhang, Yuan-bin ^{[3
]}

机构：

[1] Nanjing Inst Technol, Dept Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R China

[2] Jiangsu Key Lab Adv Struct Mat & Applicat Technol, Nanjing 211167, Jiangsu, Peoples R China

[3] Shandong Jianzhu Univ, Sch Mat Sci & Engn, Jinan 250101, Shandong, Peoples R China

来源：

MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2019年 / 22卷 / 05期

基金：

中国国家自然科学基金;

关键词：

Co-based alloys; heat treatment; corrosion resistance; microstructure; PHASE; EVOLUTION; BEHAVIOR; COBALT;

D O I：

10.1590/1980-5373-MR-2019-0068

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 1200 degrees C, the dendrites almost disappeared and most carbide dissolved, and begins to spheroidization. The corrosion resistance of CoNiCrMo alloy treated at 1000 degrees C for 1h is the highest than the one at 1100 degrees C and 1200 degrees C. Its self-corrosion potential is -424mV and self-corrosion current density is 1.02x10(-8)A/cm(2).

引用

页数：6

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