摘要
在3种保温温度(410、430、450℃)下,采用粉末渗锌法在Q345R钢表面制备含Mg渗锌层,以探究保温温度对渗锌层性能的影响。通过扫描电镜、磨损试验机和电化学工作站等分析方法对渗锌层的厚度、元素分布、耐磨性和耐蚀性等进行了表征。结果表明,在保温温度为410~450℃范围内,能够形成连续的渗锌层。渗锌层厚度随着保温温度的升高而增加,在450℃时厚度最厚,达到110μm;渗锌层耐磨性随着保温温度的升高而逐渐降低,主要磨损机制为磨粒磨损、粘着磨损和氧化磨损;耐腐蚀性随保温时间的升高呈先增加后降低的趋势,430℃保温时渗锌层的耐蚀性最好。
In order to investigate the effect of holding temperature on the properties of sherardized layer,sherardized layer containing Mg was prepared on the surface of Q345R steel by using powder sherardizing at three holding temperatures(410,430 and 450℃).The thickness,elemental distribution,wear resistance and corrosion resistance of the sherardized layer were characterized by using analytical methods such as scanning electron microscope,wear tester and electrochemical workstation.The results show that a continuous sherardized layer can be formed when the holding temperature is between 410-450℃.The sherardized layer becomes thicker as the holding temperature increases and reaches the maximum thickness of 110μm at 450℃.The wear resistance of the sherardized layer decreases with the increase of holding temperature,and the main wear mechanisms of the sherardized layer are abrasive,adhesive and oxidative wear.The corrosion resistance of the sherardized layer increases first and then decreases with the increase of holding time,and the sherardized layer has the best corrosion resistance when held at 430℃.
作者
顾建
李冬青
刘胜春
齐翼
Gu Jian;Li Dongqing;Liu Shengchun;Qi Yi(China Electric Power Research Institute,Beijing 102401,China)
出处
《金属热处理》
CAS
CSCD
北大核心
2024年第12期221-228,共8页
Heat Treatment of Metals
基金
国家电网公司总部科技项目(5108-202218280A-2-7-XG)。
关键词
粉末渗锌层
保温温度
耐磨性
耐蚀性
powder sherardized layer
holding temperature
wear resistance
corrosion resistance
