1. 鎳-鎢(wu)-鈷合金電(dian)刷鍍液的性質(zhi)
鎳-鎢-鈷合金電刷鍍液是在鎳-鎢合金鍍液的基礎上加入少量的硫酸鈷等成分組成的鎳-鎢-鈷鍍液。它是酸性鍍液,pH=1.2~2.4,深綠色,20℃時相對密度為1.29,電導率為2.052 Ω-1·cm-1。
2. 鎳-鎢-鈷合金(jin)電(dian)刷鍍(du)層的性(xing)質和用途
鎳-鎢-鈷鍍(du)層硬度(du)(du)高(gao),致密、孔(kong)隙少,在(zai)較(jiao)高(gao)的(de)(de)(de)溫度(du)(du)下仍具有一定的(de)(de)(de)硬度(du)(du),其(qi)優點是鍍(du)層的(de)(de)(de)應力小,可(ke)沉積較(jiao)厚的(de)(de)(de)鍍(du)層,即(ji)可(ke)達0.20mm,主要用來沉積耐磨的(de)(de)(de)表面層。
3. 鎳(nie)-鎢(wu)-鈷合金電刷(shua)鍍液的成分
硫酸鎳(NiSO4·7H2O) 393g/L 、 硫酸鎂(MgSO4·7H2O) 2g/L
鎢酸鈉(Na2WO4·2H2O) 23g/L 、冰醋酸(CH3COOH) 20mL/L
甲酸(HCOOH) 35g/L 、 硼酸(H3BO3) 31mL/L 、氟化鈉(NaF) 5g/L
檸檬酸(H3C6H5O7·H2O) 42g/L 、硫酸鈉(Na2SO4) 6.5g/L
十二烷基硫酸鈉[CH3(CH2)11 SO4Na] 0.01~0.001g/L
硫酸鈷(CoSO4·7H2O) 2g/L 、 硫酸錳(MnSO4·4H2O) 2g/L
4. 鎳(nie)-鎢-鈷合金電刷鍍(du)液(ye)的配制(zhi)
在(zai)(zai)1000mL燒杯(bei)(bei)中(zhong)(zhong)加(jia)(jia)(jia)(jia)入(ru)(ru)蒸餾(liu)水(shui)(shui)350mL,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)至(zhi)(zhi)70℃,加(jia)(jia)(jia)(jia)入(ru)(ru)硫酸鎳(nie)393g,攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)溶(rong)解(jie)(jie)。另(ling)取250ml,燒杯(bei)(bei),加(jia)(jia)(jia)(jia)水(shui)(shui)100ml,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)至(zhi)(zhi)70℃,加(jia)(jia)(jia)(jia)入(ru)(ru)檸檬酸42g,攪(jiao)(jiao)(jiao)(jiao)排溶(rong)解(jie)(jie)后(hou),加(jia)(jia)(jia)(jia)入(ru)(ru)鴨酸鈉(na)23,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)館解(jie)(jie)后(hou),加(jia)(jia)(jia)(jia)入(ru)(ru)含(han)硫酸鎳(nie)的(de)溶(rong)液(ye)中(zhong)(zhong),攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)均勻。另(ling)取在(zai)(zai)250mL燒杯(bei)(bei)中(zhong)(zhong)加(jia)(jia)(jia)(jia)入(ru)(ru)蒸餾(liu)水(shui)(shui)100ml,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)至(zhi)(zhi)70℃,加(jia)(jia)(jia)(jia)入(ru)(ru)硼(peng)酸31g,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)溶(rong)解(jie)(jie)后(hou),加(jia)(jia)(jia)(jia)入(ru)(ru)含(han)硫酸鎳(nie)的(de)溶(rong)液(ye)中(zhong)(zhong),攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)均勻。另(ling)取在(zai)(zai)250mL燒杯(bei)(bei)中(zhong)(zhong)加(jia)(jia)(jia)(jia)蒸餾(liu)水(shui)(shui)50ml,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)至(zhi)(zhi)70℃,加(jia)(jia)(jia)(jia)入(ru)(ru)硫酸鈉(na)6.5g、硫酸鈷2g、硫酸錳28、硫酸鎂2g和(he)氟化(hua)鈉(na)5g,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)溶(rong)解(jie)(jie)后(hou),加(jia)(jia)(jia)(jia)人含(han)硫酸鎳(nie)的(de)溶(rong)液(ye)中(zhong)(zhong),攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)均勻。另(ling)加(jia)(jia)(jia)(jia)十二烷基硫酸鈉(na)0.01~0.001g充分攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)溶(rong)解(jie)(jie)。再加(jia)(jia)(jia)(jia)人甲酸35mL 和(he)冰(bing)醋酸20mL,加(jia)(jia)(jia)(jia)熱(re)(re)(re)(re)充分攪(jiao)(jiao)(jiao)(jiao)拌(ban)(ban)至(zhi)(zhi)溶(rong)液(ye)透明。冷(leng)卻至(zhi)(zhi)室溫,用10%稀硫酸或稀氫氧化(hua)鈉(na)溶(rong)液(ye)調節(jie)溶(rong)液(ye)pH為2.將溶(rong)液(ye)倒入(ru)(ru)1000mL量(liang)筒(tong)或量(liang)瓶中(zhong)(zhong),加(jia)(jia)(jia)(jia)蒸餾(liu)水(shui)(shui)至(zhi)(zhi)刻(ke)度。
5. 鎳-鎢(wu)-鈷合金(jin)鍍液工(gong)藝(yi)規范
鎳-鎢-鈷合金(jin)鍍(du)液(ye)(ye)性(xing)能上(shang)比較類似于鎳-鎢合金(jin)鍍(du)液(ye)(ye)。
耗電系數:0.21A·h/(d㎡·μm);
工作電(dian)壓(ya):6~12V(最佳10~12V);
陰(yin)陽極相對運(yun)動速率(lv):6~12m/min;
工作溫度:30~50℃.
循(xun)環使用(yong)過程可(ke)參照(zhao)鎳-鎢合金(jin)刷鍍液。

