摘要
研究了添加剂LaCl3 和Fe2 (SO4) 3 对化学镀Ni W P沉积速度、镀层组成结构和表面形貌的影响。结果表明 ,三氯化镧质量浓度为 1～ 1 0mg/L时化学镀Ni W P沉积速度提高 ,而大于 1 0mg/L时沉积速度随浓度增加而降低 ,使Ni W P镀层中的W含量降低 ,镀层颗粒尺寸减小。而硫酸铁提高沉积速度、降低镀层中的P含量 ,但对镀层结构和颗粒尺寸影响不大。能量分散谱 (EDS)分析镀层成分的结果表明 ,稀土镧是非消耗性的添加剂 ,而硫酸铁是消耗性的添加剂 ,后者由于在基体表面共沉积 ,形成化学镀的催化活性中心 ,从而促进了化学镀过程。
The influences of additives LaCl 3 and Fe 2(SO 4) 3 in plating solution for electroless Ni-W-P deposition have been investigated as function of deposition rate, composition, structure and morphology of alloy formed. The results show that 1～10 mg/L LaCl 3 could accelerate deposition rate, whereas 20～100 mg/L LaCl 3 decrease deposition rate, reduce W content and diminish the grain size. Being different from LaCl 3, Fe 2(SO 4) 3 could increase deposition rate , reduce P content, and hardly affect the grain size. Energy Diffusion Specta (EDS) indicate LaCl 3 is not a consumptive additive, but Fe 2(SO 4) 3 is. Fe 2(SO 4) 3 raises deposition rate by forming catalytic centres, being deposited on the substrate surface.
出处
《应用化学》
CAS
CSCD
北大核心
2003年第11期1025-1029,共5页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目 ( 2 0 0 73 0 3 5 )
