CAJ | 학술논문

利用同步送粉的激光熔覆技术,以铁基激光熔覆粉和Cr3C2-25NiCr为原料在中碳钢基材上制备耐磨熔覆层。通过扫描电镜（SEM）、能谱（EDS）、X射线衍射（XRD）、显微硬度计等分析检测手段和冲蚀试验,研究了Cr3C2-25NiCr颗粒尺寸对熔覆层组织结构、硬度、耐冲蚀磨损性能的影响。结果表明：添加小颗粒Cr3C2-25NiCr后熔覆层的显微硬度约提高25%,冲蚀失重降低约50%;添加大颗粒Cr3C2-25NiCr后熔覆层的显微硬度约提高50%,冲蚀失重降低约60%。
이용동보송분적격광용복기술,이철기격광용복분화Cr3C2-25NiCr위원료재중탄강기재상제비내마용복층。통과소묘전경（SEM）、능보（EDS）、X사선연사（XRD）、현미경도계등분석검측수단화충식시험,연구료Cr3C2-25NiCr과립척촌대용복층조직결구、경도、내충식마손성능적영향。결과표명：첨가소과립Cr3C2-25NiCr후용복층적현미경도약제고25%,충식실중강저약50%;첨가대과립Cr3C2-25NiCr후용복층적현미경도약제고50%,충식실중강저약60%。
Using the synchronous powder feeding laser cladding technology, a wear resistant cladding layer is prepared in medium carbon steel substrate with iron based laser cladding powder and Cr3C2-25NiCr as raw materials. Through scanning electron microscopy （SEM）, spectroscopy （EDS）, X-ray diffraction （XRD）, micro-hardness testing methods such as analysis and erosion, study the effect of Cr3C2-25NiCr on the cladding layer organization structure, hardness, resistance to abrasion performance. The results show that after adding small particles of Cr3C2-25NiCr, the hardness of the cladding layer is improved by about 25%, erosion of weightlessness is reduced about 50% ;after adding large particle size of Cr3C2-25NiCr,the hardness of the cladding layer is improved by about 50%, erosion of weightlessness is reduced about 60%.