基于放电沉积的金刚石磨粒层制备实验研究

Experimental Study of the Fabrication of Diamond Abrasive Layer by Electrical Discharge Machining

提出将电火花沉积技术用于金属材料/非金属材料之间的沉积,通过制备一种含有超硬磨粒金刚石的压缩粉体电极,采用放电沉积工艺实验将超硬磨粒金刚石与电极中的其他金属材料一起沉积到基体母材表面上,然后通过扫描电镜观察与分析,沉积层中的金刚石磨粒形状较好,分布较均匀,具有磨粒层的基本要素.实验结果表明,采用电火花放电沉积能制备金刚石磨粒层.

Electrical Discharge Machining（EDM）deposition technology was proposed to fabricate an abrasive layer with a specially designed compact electrode.Co powders,Cu powders and diamond grains were compressed and sintered as a compact electrode,and then the powders in the compact electrode were deposited on the surface of the workpiece to form an abrasive layer in the EDM method.The good shape of diamond grains were found in the deposited abrasive layer by SEM scanning,and elements Co and Cu were also found in the deposited layer.The experiment result has shown that it can be used to fabricate diamond abrasive layer in the EDM method.