This paper describes about selective deposition of material for pattern generation. The process is carried out using masking technique and by deposition of constituent material of powder metallurgical (P/M) green compact tool at selected area of aluminium work surface in Electro Discharge Machining (EDM) process. The process is carried out to generate line pattern with a hard layer of tungsten and copper at the selected area. Thus, it can improve surface integrity of aluminium substrate while maintaining its overall lightness. P/M tool, positive polarity of tool and hydrocarbon dielectric are used to achieve appreciable amount of material transfer from tool to work surface. The average deviation of material deposition from predefined boundary line is evaluated as edge roughness of the pattern. Taguchi Design of Experiment is used to perform Analysis of Variance (ANOVA) and Overall Evaluation Criteria (OEC) for its parametric study. The surface roughness is obtained in the range of 4.7–10.55[Formula: see text][Formula: see text]m and edge roughness in the range of 36.49–56.82[Formula: see text][Formula: see text]m in various working conditions. However, surface roughness of 4.00[Formula: see text][Formula: see text]m and edge roughness of 21.47[Formula: see text][Formula: see text]m are achieved at the optimum condition.

中文翻译：

---

使用掩蔽技术在 EDM 中生成图案的选择性区域沉积

本文描述了用于图案生成的材料的选择性沉积。该工艺使用掩蔽技术并通过在电火花加工 (EDM) 工艺中在铝工作表面的选定区域沉积粉末冶金 (P/M) 生压坯工具的组成材料来进行。执行该工艺以在选定区域生成具有硬质钨和铜层的线图案。因此，它可以提高铝基板的表面完整性，同时保持其整体亮度。P/M 工具、工具的正极性和碳氢电介质用于实现从工具到工作表面的大量材料转移。材料沉积与预定义边界线的平均偏差被评估为图案的边缘粗糙度。田口实验设计用于对其参数研究进行方差分析 (ANOVA) 和总体评估标准 (OEC)。表面粗糙度在4.7-10.55[公式：见文][公式：见文]m范围内，边缘粗糙度在36.49-56.82[公式：见文][公式：见文]m范围内工作环境。然而，4.00[公式：见文][公式：见文]m的表面粗糙度和21.47[公式：见文][公式：见文]m的边缘粗糙度是在最佳条件下实现的。