(1)試片的制備先用(yong)砂紙把銅片六個面上(shang)的瑕疵去掉。再用(yong)65um (240粒度(du)）的砂紙處(chu)理。用(yong)定量(liang)濾紙擦去銅片上(shang)的金屬屑，把銅片浸沒(mei)在洗滌溶劑中。然后取出，可直接進(jin)行最后磨光或儲存(cun)在洗滌溶劑中備用(yong)。

表面(mian)準(zhun)備的(de)(de)(de)操(cao)作(zuo)步驟(zou):把一(yi)張砂(sha)(sha)紙(zhi)(zhi)放在(zai)平坦的(de)(de)(de)表面(mian)上，用(yong)煤(mei)油(you)或洗滌溶劑(ji)濕(shi)潤(run)砂(sha)(sha)紙(zhi)(zhi)，以旋轉動作(zuo)將(jiang)銅(tong)(tong)(tong)片(pian)對著砂(sha)(sha)紙(zhi)(zhi)摩擦，用(yong)無灰濾紙(zhi)(zhi)或夾鉗夾持，以防(fang)止(zhi)銅(tong)(tong)(tong)片(pian)與手指接觸。另一(yi)種(zhong)方(fang)法(fa)是用(yong)粒度合適的(de)(de)(de)干砂(sha)(sha)紙(zhi)(zhi)(或砂(sha)(sha)布)裝在(zai)馬達上，通過驅動馬達來加工銅(tong)(tong)(tong)片(pian)表面(mian)。

最(zui)后磨光(guang):從(cong)洗滌溶(rong)劑(ji)中(zhong)(zhong)取出銅(tong)片(pian)(pian)(pian)(pian)(pian)，用(yong)(yong)無灰濾紙保(bao)護(hu)手指夾(jia)持銅(tong)片(pian)(pian)(pian)(pian)(pian)。取一(yi)(yi)些105um ( 150目）的(de)碳化(hua)硅或氧(yang)化(hua)鋁(lv)（剛(gang)玉)砂(sha)(sha)(sha)粒放(fang)在(zai)玻(bo)璃板上，用(yong)(yong)1滴洗滌溶(rong)劑(ji)濕潤，并用(yong)(yong)一(yi)(yi)塊脫脂(zhi)棉(mian)，蘸(zhan)取砂(sha)(sha)(sha)粒。用(yong)(yong)不銹鋼(gang)鑷子夾(jia)持銅(tong)片(pian)(pian)(pian)(pian)(pian)，千萬不能接(jie)觸手指。先摩(mo)擦銅(tong)片(pian)(pian)(pian)(pian)(pian)各端邊，然后將銅(tong)片(pian)(pian)(pian)(pian)(pian)夾(jia)在(zai)夾(jia)鉗上，用(yong)(yong)沾在(zai)脫脂(zhi)棉(mian)上的(de)碳化(hua)硅或氧(yang)化(hua)鋁(lv)（剛(gang)玉）砂(sha)(sha)(sha)粒磨光(guang)主要表面，要沿銅(tong)片(pian)(pian)(pian)(pian)(pian)的(de)長軸(zhou)方向磨。再用(yong)(yong)一(yi)(yi)塊干凈的(de)脫脂(zhi)棉(mian)使勁地摩(mo)擦銅(tong)片(pian)(pian)(pian)(pian)(pian)，以除去(qu)所有金(jin)屬屑，直(zhi)到(dao)新(xin)脫脂(zhi)棉(mian)不留污斑為(wei)止。銅(tong)片(pian)(pian)(pian)(pian)(pian)擦凈后，立(li)即浸入已(yi)準(zhun)備好的(de)試樣中(zhong)(zhong)。

注意:為了(le)得(de)到一個均(jun)勻(yun)的腐蝕(shi)色(se)彩銅(tong)(tong)片(pian)，均(jun)勻(yun)地磨光(guang)銅(tong)(tong)片(pian)的各(ge)個表(biao)面(mian)(mian)是很重要的。如果邊緣已出(chu)現(xian)磨損(sun)（表(biao)面(mian)(mian)呈橢(tuo)圓形)，其腐蝕(shi)多比中(zhong)心(xin)強烈。使用(yong)夾鉗有助于(yu)銅(tong)(tong)片(pian)表(biao)面(mian)(mian)磨光(guang)。

(2)取樣(yang)對會(hui)使銅片(pian)造(zao)成(cheng)輕度變暗(an)的(de)(de)各種(zhong)試(shi)樣(yang)，應(ying)該儲放在干凈的(de)(de)深色玻璃瓶、塑料瓶或其它不致(zhi)影響到(dao)試(shi)樣(yang)腐蝕(shi)性的(de)(de)合(he)適的(de)(de)容器中。

容(rong)器要盡可能裝滿(man)試(shi)樣(yang)(yang)(yang)，取(qu)樣(yang)(yang)(yang)后立(li)即蓋上。取(qu)樣(yang)(yang)(yang)時(shi)要小心，防(fang)止(zhi)試(shi)樣(yang)(yang)(yang)暴露于日光下。實驗室收(shou)到(dao)試(shi)樣(yang)(yang)(yang)后，在打開容(rong)器后應盡快(kuai)進行(xing)實驗。

如果(guo)在試(shi)樣中看到(dao)(dao)有懸浮水（渾濁），則用一張中速定性濾紙把足夠體積的試(shi)樣過濾到(dao)(dao)一個清潔(jie)、干(gan)燥的試(shi)管中。此操(cao)作盡可能(neng)在暗室或避(bi)光的屏風(feng)下(xia)進行(xing)。

注意:鍍(du)錫容器會影響試(shi)樣(yang)的腐蝕程度(du)，因此(ci)，不能使用鍍(du)錫鐵皮(pi)容器來(lai)儲存(cun)試(shi)樣(yang)。銅片(pian)與(yu)水接觸會引起變色，使銅片(pian)評定(ding)造成(cheng)困難。