• 作者： Wan, Haewei H.; Chang, Rong-Yeu; Yang, Wen-Lii
• 中文摘要： 本文選用衝擊式噴流之特例---單一噴流通孔系統,探討週斯性電解情況下孔內之電流分布。吾人發展出一數學模式及數值方法用以預測穩態及週期性反轉電壓下通孔之鍍層厚度分布。理論計算得知週期性反轉技術可有效地增進低、中縱橫比之通孔電流分布。然而,對於高縱橫比的深孔而言,其瓶頸為歐姆電阻而非質量傳送。即使採用衝擊式噴流法亦不能改善通孔內鍍層分布不均的現象。
• 英文摘要： A well-defined single jet through-hole system, which represents a special case of impinging fluid jets, is selected for examining the impact of periodic electrolysis on current distribution. A mathematical model, as well as a numerical scheme is developed on the basis of the concept of streamline grid mesh. Theoretical calculations are performed under direct current (DC) and periodic- reverse(PR) conditions. Applying PR technique is demonstrated by the results to only be effective for a through-hole with low or medium aspect ratio (AR). A high-AR through-hole exhibits characteristics that ohmic resistance rather than mass transfer imposes a critical limitation. An impingement technique will likely not become a feasible alternative under such circumstances even in conjunction with PR potentials.
• 中文關鍵字： 週期式反轉脈衝; 數學模型; 衝擊式噴流; 通孔電鍍; 高縱橫比電鍍
• 英文關鍵字： Periodic-Reverse Pulse; Mathematical Model; Impinging Jet; Through-Hole Plating; High Aspect Ratio Plating