由(you)(you)表面(mian)層(ceng)和基層(ceng)組成(cheng)(cheng)的(de)(de)(de)半導(dao)電(dian)(dian)輥；該(gai)表面(mian)層(ceng)具有(you)較(jiao)(jiao)(jiao)高(gao)的(de)(de)(de)電(dian)(dian)阻(zu)(zu)值(zhi)(zhi)，由(you)(you)橡膠組合物(wu)制成(cheng)(cheng)；基層(ceng)具有(you)較(jiao)(jiao)(jiao)低的(de)(de)(de)電(dian)(dian)阻(zu)(zu)值(zhi)(zhi)，由(you)(you)導(dao)電(dian)(dian)橡膠組合物(wu)組成(cheng)(cheng)。該(gai)半導(dao)電(dian)(dian)輥的(de)(de)(de)目的(de)(de)(de)在于通過良好地平衡表面(mian)層(ceng)和基層(ceng)的(de)(de)(de)電(dian)(dian)阻(zu)(zu)值(zhi)(zhi)而獲得良好的(de)(de)(de)靜電(dian)(dian)充電(dian)(dian)特性。有(you)必要使這兩種層(ceng)的(de)(de)(de)厚度高(gao)度準確。為使兩種層(ceng)的(de)(de)(de)厚度高(gao)度準確，需(xu)要較(jiao)(jiao)(jiao)麻(ma)煩的(de)(de)(de)管理(li)，并且(qie)生產橡膠輥的(de)(de)(de)成(cheng)(cheng)本較(jiao)(jiao)(jiao)高(gao)。

磁控濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)種類(lei)：金屬濺(jian)(jian)(jian)射(she)鍍膜(mo)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，純(chun)鈀(ba)(ba)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)誰家(jia)(jia)好，合(he)金濺(jian)(jian)(jian)射(she)鍍膜(mo)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，純(chun)鈀(ba)(ba)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)哪家(jia)(jia)好，陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)鍍膜(mo)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，硼化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，碳化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，氟化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，氮化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，氧(yang)化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，硒化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，硅化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，純(chun)鈀(ba)(ba)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)廠(chang)家(jia)(jia)，硫化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，碲化(hua)(hua)(hua)(hua)物(wu)(wu)陶(tao)(tao)瓷(ci)(ci)(ci)濺(jian)(jian)(jian)射(she)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，其他陶(tao)(tao)瓷(ci)(ci)(ci)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)，摻(chan)鉻一氧(yang)化(hua)(hua)(hua)(hua)硅陶(tao)(tao)瓷(ci)(ci)(ci)靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)（Cr-SiO），磷化(hua)(hua)(hua)(hua)銦靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)（InP），鉛靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)（PbAs），銦靶(ba)(ba)(ba)(ba)(ba)(ba)(ba)材(cai)(cai)(cai)(cai)（InAs）。

各種純度(du)(du)鋁中的雜質含量(liang)及(ji)剩余(yu)電阻率(lv)(lv)如表2所示。超純金(jin)(jin)屬(shu)超純的純度(du)(du)也(ye)(ye)可以用剩余(yu)電阻率(lv)(lv)來(lai)(lai)測定(ding)，其值約為2×10-5。現代科學技術的發展趨勢是(shi)對金(jin)(jin)屬(shu)純度(du)(du)要求越來(lai)(lai)越高。因(yin)為金(jin)(jin)屬(shu)未能(neng)達到一定(ding)純度(du)(du)的情(qing)況下，池州純鈀靶材，金(jin)(jin)屬(shu)特(te)性往往為雜質所掩蓋。不僅是(shi)半導體(ti)材料，其他金(jin)(jin)屬(shu)也(ye)(ye)有同樣的情(qing)況，由于雜質存在(zai)影響(xiang)金(jin)(jin)屬(shu)的性能(neng)。

鎢過去用作燈泡的燈絲(si)，由于脆性而使處理上有(you)困難，在適當(dang)提純(chun)之后(hou)，這種(zhong)缺點即可以克(ke)服（鎢絲(si)也(ye)有(you)摻雜及加(jia)工問(wen)題）。