金屬陽極又稱(cheng)形穩性陽極，是(shi)在(zai)金屬鈦的基質上用(yong)熱(re)分解法(fa)被覆一層鉑(bo)族金屬(如釕)氧(yang)(yang)化物(wu)和閥金屬(如鈦)氧(yang)(yang)化物(wu)混晶結構的涂層。

　　物料介紹

　　金(jin)屬(shu)陽(yang)極又(you)稱形(xing)穩性(xing)陽(yang)極，是在金(jin)屬(shu)鈦(tai)(tai)的(de)(de)(de)基質上用(yong)(yong)熱分解(jie)(jie)(jie)(jie)法(fa)被(bei)覆一層(ceng)鉑族金(jin)屬(shu)(如(ru)釕)氧(yang)化(hua)(hua)(hua)物和閥金(jin)屬(shu)(如(ru)鈦(tai)(tai))氧(yang)化(hua)(hua)(hua)物混晶結(jie)構的(de)(de)(de)涂層(ceng)。這(zhe)涂層(ceng)比貴(gui)金(jin)屬(shu)鈍(dun)化(hua)(hua)(hua)膜(mo)具(ju)有耐(nai)(nai)還(huan)原作(zuo)用(yong)(yong)，既有良好的(de)(de)(de)催化(hua)(hua)(hua)活性(xing)，便于(yu)(yu)(yu)氯離子(zi)放電(dian)(dian)(dian)(dian)(dian)(dian)(氯超壓比在石(shi)墨上低)又(you)具(ju)有足夠的(de)(de)(de)機械強度(du)和耐(nai)(nai)蝕性(xing)能，能耐(nai)(nai)鹽(yan)(yan)水(shui)和氣流(liu)的(de)(de)(de)沖擊(ji)和氯的(de)(de)(de)腐蝕。形(xing)狀(zhuang)有拉(la)網鈦(tai)(tai)板(用(yong)(yong)于(yu)(yu)(yu)隔(ge)(ge)(ge)膜(mo)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)和離子(zi)膜(mo)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao))及(ji)間(jian)(jian)隔(ge)(ge)(ge)鈦(tai)(tai)條(用(yong)(yong)于(yu)(yu)(yu)水(shui)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)棒)。孔(kong)隙開口的(de)(de)(de)投影(ying)面(mian)積(ji)(ji)，可達陽(yang)極總面(mian)積(ji)(ji)的(de)(de)(de)50%~60%，容許陽(yang)極表面(mian)形(xing)成(cheng)的(de)(de)(de)氣泡迅速逸出，減少氣泡效(xiao)應，同時(shi)改善電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)液的(de)(de)(de)循環，減輕(qing)濃差極化(hua)(hua)(hua)作(zuo)用(yong)(yong)。更(geng)重要的(de)(de)(de)是用(yong)(yong)于(yu)(yu)(yu)隔(ge)(ge)(ge)膜(mo)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)，由(you)于(yu)(yu)(yu)金(jin)屬(shu)陽(yang)極外形(xing)尺寸穩定，在電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)運行期間(jian)(jian)，陰陽(yang)兩極的(de)(de)(de)距離恒定不(bu)變(bian)，因(yin)而(er)(er)(er)鹽(yan)(yan)水(shui)間(jian)(jian)隙的(de)(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)壓降大為減少，而(er)(er)(er)且(qie)不(bu)用(yong)(yong)澆鉛(qian)固定，杜絕了鉛(qian)污染的(de)(de)(de)危險。用(yong)(yong)于(yu)(yu)(yu)水(shui)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)，由(you)于(yu)(yu)(yu)陽(yang)極不(bu)必經常更(geng)換(huan)，減少暴露水(shui)銀(yin)(yin)造成(cheng)污染的(de)(de)(de)機會。一般在隔(ge)(ge)(ge)膜(mo)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)內，使(shi)用(yong)(yong)壽(shou)命(ming)是7~8年(nian)(nian);在水(shui)銀(yin)(yin)電(dian)(dian)(dian)(dian)(dian)(dian)解(jie)(jie)(jie)(jie)槽(cao)(cao)內因(yin)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)密度(du)而(er)(er)(er)異，高(gao)電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)密度(du)(10~12千安/米2)時(shi)約為兩年(nian)(nian)，低電(dian)(dian)(dian)(dian)(dian)(dian)流(liu)密度(du)(5-6千安/米2)時(shi)約為四(si)年(nian)(nian)。而(er)(er)(er)且(qie)失(shi)效(xiao)后，更(geng)新涂層(ceng)后又(you)可繼(ji)續使(shi)用(yong)(yong)。