【銅的密(mi)度(du)】銅的密(mi)度(du)是多少 各種銅的密(mi)度(du)匯(hui)總

銅密度

銅密度是多少呢？銅的化學符號為Cu，是一種過(guo)渡(du)金屬。銅(tong)有很多(duo)分類。如果銅(tong)含量(liang)達到(dao)99.5～99.95%，那(nei)么(me)就(jiu)是(shi)純銅(tong)(tong)(tong)(tong)了。純銅(tong)(tong)(tong)(tong)也叫做“紫銅(tong)(tong)(tong)(tong)”或者“紅(hong)銅(tong)(tong)(tong)(tong)”，一般分為無氧銅(tong)(tong)(tong)(tong)、有氧銅(tong)(tong)(tong)(tong)和特種銅(tong)(tong)(tong)(tong)。純銅(tong)(tong)(tong)(tong)因為呈現紫色，因此(ci)被稱為“紫銅(tong)(tong)(tong)(tong)”。如果是(shi)銅(tong)(tong)(tong)(tong)和鋅所組成的合(he)(he)金，那(nei)么(me)就(jiu)是(shi)黃銅(tong)(tong)(tong)(tong)了。以鎳(nie)為主(zhu)要添加元素的銅(tong)(tong)(tong)(tong)基(ji)合(he)(he)金，就(jiu)是(shi)吧(ba)白銅(tong)(tong)(tong)(tong)了，白銅(tong)(tong)(tong)(tong)呈銀白色，有金屬光澤(ze)，故名白銅(tong)(tong)(tong)(tong)。青銅(tong)(tong)(tong)(tong)原指銅(tong)(tong)(tong)(tong)錫合(he)(he)金﹐后除黃銅(tong)(tong)(tong)(tong)﹑白銅(tong)(tong)(tong)(tong)以外的銅(tong)(tong)(tong)(tong)合(he)(he)金均稱青銅(tong)(tong)(tong)(tong)。那(nei)么(me)不同的銅(tong)(tong)(tong)(tong)，銅(tong)(tong)(tong)(tong)密度(du)當然(ran)是(shi)不一樣的了。我(wo)們先(xian)來說(shuo)說(shuo)銅(tong)(tong)(tong)(tong)密度(du)的定義吧(ba)。

銅密度的定義：銅(tong)的(de)(de)質(zhi)量與(yu)銅(tong)體積的(de)(de)比值就(jiu)叫作銅(tong)密度(du)。

銅密度符號和單位：通常用“ρ”（讀做rōu）表示，單位(wei)為g/cm3，正確讀法是克(ke)每立方厘米。還(huan)有一種不常用的單位是kg/dm3，讀作千克每(mei)立方(fang)分米(mi)。它們之(zhi)間的換算關系(xi)：lg/cm3=1kg/dm3=103kg/m3。

銅密度的公式：

1、銅密(mi)度的公式：ρ=m/V，ρ=dm/dV（ρ表(biao)示(shi)(shi)密(mi)度、m表(biao)示(shi)(shi)質量、V表(biao)示(shi)(shi)體積(ji)）

2、銅密度公式變形：V=m/ρ，m=ρV，m=∫ρ（V）dV。

3、質量(liang)m可以用(yong)(yong)天平測(ce)(ce)量(liang)，液(ye)體和形狀不規則的(de)(de)固體的(de)(de)體積(ji)v可以用(yong)(yong)量(liang)筒或量(liang)杯(bei)測(ce)(ce)量(liang)。

4、物質(zhi)的(de)密度(du)是(shi)一定的(de)，它不隨體積和質(zhi)量的(de)變(bian)(bian)化(hua)(hua)(hua)而(er)變(bian)(bian)化(hua)(hua)(hua)，不同牌號的(de)銅密度(du)也(ye)是(shi)不隨體積變(bian)(bian)化(hua)(hua)(hua)而(er)變(bian)(bian)化(hua)(hua)(hua)的(de)。

銅密度測量的稱量法：

1、準備：天平、量筒、水、銅、細(xi)繩。

2、步(bu)驟：

（1）用(yong)天平稱出金屬塊(kuai)的質量m

（2）往量筒中注入適量水，讀出體積(ji)為V1

（3）用細(xi)繩系(xi)住(zhu)銅塊放(fang)入量筒(tong)中，浸沒，讀出體積(ji)為V2

3、計算(suan)：銅密度測(ce)量(liang)公式

4、此(ci)測量法只針對實(shi)心(xin)銅。

銅密度測量的比重杯法：

1、準備：燒杯、水、銅、天平

2、步驟：

（1）往燒杯裝滿(man)水，放在天平(ping)上(shang)稱出(chu)質量為m1；

（2）將(jiang)銅塊輕輕放入(ru)水中，溢(yi)出(chu)部(bu)分(fen)水，再將(jiang)燒杯放在(zai)天(tian)平上稱出(chu)質(zhi)量為m2;

（3）將銅塊取(qu)出，把燒(shao)杯放在天(tian)平上稱出燒(shao)杯和剩下(xia)水的質量m3。

3、計算表(biao)達式：ρ=ρ水（m2-m3）/（m1-m3）

純銅密度、黃銅密度、青銅密度、白銅密度：

1、純銅，無氧銅的密度是8.9（g/cm3），磷脫(tuo)氧銅的密度是8.89（g/cm3）。

2、加工黃銅的密(mi)度(du)是8.5-8.8（g/cm3），鑄(zhu)造黃銅的密(mi)度(du)是7.7-8.55（g/cm3）。

3、加工(gong)青銅(tong)的密度是(shi)7.5-8.9（g/cm3），鑄造青銅(tong)的密度是(shi)7.45-9.54（g/cm3）。

4、白銅的密度是8.4-8.9（g/cm3）。

常用銅密度表：

注：表為加工后密度：紫銅(tong)包括脫氧銅(tong)8.94g/cm3