1. 鎳-鎢-鈷合金電刷(shua)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-鈷合金電刷鍍層的性質(zhi)和用途
鎳-鎢-鈷鍍層(ceng)硬度高,致密(mi)、孔隙(xi)少,在較高的(de)(de)溫度下仍具有一定的(de)(de)硬度,其(qi)優(you)點是鍍層(ceng)的(de)(de)應力小,可(ke)沉(chen)(chen)積較厚的(de)(de)鍍層(ceng),即可(ke)達0.20mm,主要用來沉(chen)(chen)積耐磨的(de)(de)表面層(ceng)。
3. 鎳(nie)-鎢-鈷合金電刷鍍液的成分(fen)
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-鎢(wu)-鈷合金(jin)電刷鍍液的配制
在(zai)1000mL燒(shao)杯中(zhong)加(jia)(jia)(jia)入(ru)(ru)蒸餾水350mL,加(jia)(jia)(jia)熱至(zhi)70℃,加(jia)(jia)(jia)入(ru)(ru)硫(liu)(liu)(liu)(liu)(liu)(liu)酸鎳(nie)393g,攪(jiao)(jiao)拌(ban)(ban)(ban)溶(rong)(rong)解(jie)。另取250ml,燒(shao)杯,加(jia)(jia)(jia)水100ml,加(jia)(jia)(jia)熱至(zhi)70℃,加(jia)(jia)(jia)入(ru)(ru)檸檬酸42g,攪(jiao)(jiao)排溶(rong)(rong)解(jie)后(hou)(hou),加(jia)(jia)(jia)入(ru)(ru)鴨酸鈉23,加(jia)(jia)(jia)熱攪(jiao)(jiao)拌(ban)(ban)(ban)館解(jie)后(hou)(hou),加(jia)(jia)(jia)入(ru)(ru)含(han)硫(liu)(liu)(liu)(liu)(liu)(liu)酸鎳(nie)的(de)(de)溶(rong)(rong)液(ye)(ye)中(zhong),攪(jiao)(jiao)拌(ban)(ban)(ban)均(jun)勻(yun)(yun)。另取在(zai)250mL燒(shao)杯中(zhong)加(jia)(jia)(jia)入(ru)(ru)蒸餾水100ml,加(jia)(jia)(jia)熱至(zhi)70℃,加(jia)(jia)(jia)入(ru)(ru)硼(peng)酸31g,加(jia)(jia)(jia)熱攪(jiao)(jiao)拌(ban)(ban)(ban)溶(rong)(rong)解(jie)后(hou)(hou),加(jia)(jia)(jia)入(ru)(ru)含(han)硫(liu)(liu)(liu)(liu)(liu)(liu)酸鎳(nie)的(de)(de)溶(rong)(rong)液(ye)(ye)中(zhong),攪(jiao)(jiao)拌(ban)(ban)(ban)均(jun)勻(yun)(yun)。另取在(zai)250mL燒(shao)杯中(zhong)加(jia)(jia)(jia)蒸餾水50ml,加(jia)(jia)(jia)熱至(zhi)70℃,加(jia)(jia)(jia)入(ru)(ru)硫(liu)(liu)(liu)(liu)(liu)(liu)酸鈉6.5g、硫(liu)(liu)(liu)(liu)(liu)(liu)酸鈷(gu)2g、硫(liu)(liu)(liu)(liu)(liu)(liu)酸錳(meng)28、硫(liu)(liu)(liu)(liu)(liu)(liu)酸鎂2g和(he)氟(fu)化鈉5g,加(jia)(jia)(jia)熱攪(jiao)(jiao)拌(ban)(ban)(ban)溶(rong)(rong)解(jie)后(hou)(hou),加(jia)(jia)(jia)人含(han)硫(liu)(liu)(liu)(liu)(liu)(liu)酸鎳(nie)的(de)(de)溶(rong)(rong)液(ye)(ye)中(zhong),攪(jiao)(jiao)拌(ban)(ban)(ban)均(jun)勻(yun)(yun)。另加(jia)(jia)(jia)十(shi)二烷基硫(liu)(liu)(liu)(liu)(liu)(liu)酸鈉0.01~0.001g充分攪(jiao)(jiao)拌(ban)(ban)(ban)溶(rong)(rong)解(jie)。再加(jia)(jia)(jia)人甲酸35mL 和(he)冰醋酸20mL,加(jia)(jia)(jia)熱充分攪(jiao)(jiao)拌(ban)(ban)(ban)至(zhi)溶(rong)(rong)液(ye)(ye)透明(ming)。冷(leng)卻至(zhi)室溫,用10%稀(xi)硫(liu)(liu)(liu)(liu)(liu)(liu)酸或稀(xi)氫(qing)氧化鈉溶(rong)(rong)液(ye)(ye)調節(jie)溶(rong)(rong)液(ye)(ye)pH為2.將溶(rong)(rong)液(ye)(ye)倒入(ru)(ru)1000mL量(liang)筒或量(liang)瓶中(zhong),加(jia)(jia)(jia)蒸餾水至(zhi)刻度。
5. 鎳-鎢-鈷合金鍍(du)液工藝規范
鎳-鎢(wu)-鈷合金鍍液性能(neng)上比(bi)較類似于鎳-鎢(wu)合金鍍液。
耗(hao)電系數:0.21A·h/(d㎡·μm);
工作電(dian)壓:6~12V(最(zui)佳10~12V);
陰陽(yang)極相對運動速率:6~12m/min;
工(gong)作溫度:30~50℃.
循(xun)環使用過(guo)程可參照(zhao)鎳-鎢合金刷鍍液(ye)。

