CAJ | 학술논문

采用MSH型腐蚀磨损实验机,通过改变水砂两相流的冲击速度、含砂量和固相粒径等环境因素,研究了电沉积Ni-P非晶合金的冲蚀-腐蚀磨损行为。结果表明,电沉积Ni-P非晶合金的冲蚀失重率和冲蚀-腐蚀失重率均随着冲击速度、含砂量和固相粒径的增加而增大。与AISI 304不锈钢相比,电沉积Ni-P非晶合金冲蚀失重率和总失重率较高,但腐蚀失重率较低,也表现出了良好的抗冲蚀-腐蚀磨损性能。棒状Ni-P非晶合金镀层的冲蚀-腐蚀磨损,正面以砂粒挤压锻打造成的唇片和断裂为主,侧面以切削和犁削为主。
채용MSH형부식마손실험궤,통과개변수사량상류적충격속도、함사량화고상립경등배경인소,연구료전침적Ni-P비정합금적충식-부식마손행위。결과표명,전침적Ni-P비정합금적충식실중솔화충식-부식실중솔균수착충격속도、함사량화고상립경적증가이증대。여AISI 304불수강상비,전침적Ni-P비정합금충식실중솔화총실중솔교고,단부식실중솔교저,야표현출료량호적항충식-부식마손성능。봉상Ni-P비정합금도층적충식-부식마손,정면이사립제압단타조성적진편화단렬위주,측면이절삭화리삭위주。
With the variation of impingement velocity,sand content and sand size,erosion-corrosion behavior of amorphous Ni-P electrodeposits was investigated using model MSH erosion-corrosion equipment in this paper.Results show that the mass loss rates of erosion and erosion-corrosion increased with impingement velocity,sand content and sand size.Compared with AISI 304 SS,the mass loss rate of erosion and total mass loss rate of amorphous Ni-P electrodeposits are higher,but mass loss rate of corrosion is lower.And it also suggests amorphous Ni-P electrodeposits have good erosion-corrosion resistance.The erosion-corrosion mechanism of rod amorphous Ni-P electrodeposits is lip and fracture on its frontal side and cutting and furrow on its lateral side.