1. 鎳-鎢-鈷合金電刷鍍液(ye)的性質
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(wu)-鈷合金電刷鍍(du)層的性質和(he)用途
鎳-鎢-鈷鍍層硬(ying)度(du)高,致密、孔隙少(shao),在較高的(de)溫度(du)下仍(reng)具(ju)有一(yi)定的(de)硬(ying)度(du),其(qi)優點是鍍層的(de)應力小,可沉(chen)積較厚(hou)的(de)鍍層,即可達0.20mm,主要用(yong)來(lai)沉(chen)積耐磨的(de)表面層。
3. 鎳(nie)-鎢-鈷(gu)合(he)金電刷鍍液的(de)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(wu)-鈷合(he)金電(dian)刷(shua)鍍液的(de)配制
在(zai)1000mL燒(shao)(shao)杯(bei)中加(jia)(jia)入(ru)(ru)(ru)(ru)蒸(zheng)(zheng)餾(liu)水(shui)350mL,加(jia)(jia)熱(re)至(zhi)(zhi)70℃,加(jia)(jia)入(ru)(ru)(ru)(ru)硫酸(suan)(suan)鎳(nie)393g,攪(jiao)(jiao)拌(ban)(ban)溶(rong)(rong)(rong)解(jie)(jie)。另取(qu)250ml,燒(shao)(shao)杯(bei),加(jia)(jia)水(shui)100ml,加(jia)(jia)熱(re)至(zhi)(zhi)70℃,加(jia)(jia)入(ru)(ru)(ru)(ru)檸檬酸(suan)(suan)42g,攪(jiao)(jiao)排溶(rong)(rong)(rong)解(jie)(jie)后(hou)(hou),加(jia)(jia)入(ru)(ru)(ru)(ru)鴨酸(suan)(suan)鈉23,加(jia)(jia)熱(re)攪(jiao)(jiao)拌(ban)(ban)館解(jie)(jie)后(hou)(hou),加(jia)(jia)入(ru)(ru)(ru)(ru)含(han)(han)硫酸(suan)(suan)鎳(nie)的溶(rong)(rong)(rong)液(ye)中,攪(jiao)(jiao)拌(ban)(ban)均勻。另取(qu)在(zai)250mL燒(shao)(shao)杯(bei)中加(jia)(jia)入(ru)(ru)(ru)(ru)蒸(zheng)(zheng)餾(liu)水(shui)100ml,加(jia)(jia)熱(re)至(zhi)(zhi)70℃,加(jia)(jia)入(ru)(ru)(ru)(ru)硼酸(suan)(suan)31g,加(jia)(jia)熱(re)攪(jiao)(jiao)拌(ban)(ban)溶(rong)(rong)(rong)解(jie)(jie)后(hou)(hou),加(jia)(jia)入(ru)(ru)(ru)(ru)含(han)(han)硫酸(suan)(suan)鎳(nie)的溶(rong)(rong)(rong)液(ye)中,攪(jiao)(jiao)拌(ban)(ban)均勻。另取(qu)在(zai)250mL燒(shao)(shao)杯(bei)中加(jia)(jia)蒸(zheng)(zheng)餾(liu)水(shui)50ml,加(jia)(jia)熱(re)至(zhi)(zhi)70℃,加(jia)(jia)入(ru)(ru)(ru)(ru)硫酸(suan)(suan)鈉6.5g、硫酸(suan)(suan)鈷2g、硫酸(suan)(suan)錳28、硫酸(suan)(suan)鎂2g和氟化鈉5g,加(jia)(jia)熱(re)攪(jiao)(jiao)拌(ban)(ban)溶(rong)(rong)(rong)解(jie)(jie)后(hou)(hou),加(jia)(jia)人(ren)含(han)(han)硫酸(suan)(suan)鎳(nie)的溶(rong)(rong)(rong)液(ye)中,攪(jiao)(jiao)拌(ban)(ban)均勻。另加(jia)(jia)十二烷基硫酸(suan)(suan)鈉0.01~0.001g充分(fen)(fen)攪(jiao)(jiao)拌(ban)(ban)溶(rong)(rong)(rong)解(jie)(jie)。再加(jia)(jia)人(ren)甲酸(suan)(suan)35mL 和冰醋(cu)酸(suan)(suan)20mL,加(jia)(jia)熱(re)充分(fen)(fen)攪(jiao)(jiao)拌(ban)(ban)至(zhi)(zhi)溶(rong)(rong)(rong)液(ye)透明。冷卻至(zhi)(zhi)室溫,用10%稀硫酸(suan)(suan)或稀氫氧化鈉溶(rong)(rong)(rong)液(ye)調節溶(rong)(rong)(rong)液(ye)pH為2.將溶(rong)(rong)(rong)液(ye)倒入(ru)(ru)(ru)(ru)1000mL量筒或量瓶中,加(jia)(jia)蒸(zheng)(zheng)餾(liu)水(shui)至(zhi)(zhi)刻(ke)度。
5. 鎳-鎢-鈷合金(jin)鍍液(ye)工藝規范
鎳-鎢-鈷合金鍍(du)液(ye)(ye)性能上比較類似于鎳-鎢合金鍍(du)液(ye)(ye)。
耗電(dian)系數:0.21A·h/(d㎡·μm);
工作電(dian)壓(ya):6~12V(最佳10~12V);
陰陽極相對運動速率:6~12m/min;
工(gong)作溫度:30~50℃.
循環使(shi)用(yong)過程(cheng)可(ke)參照鎳-鎢合金刷鍍(du)液(ye)。

