品名(ming):TU1無(wu)氧銅帶

無氧(yang)銅(tong)是不(bu)(bu)含氧(yang)也不(bu)(bu)含任何脫氧(yang)劑殘留物的(de)純(chun)銅(tong)。但實際(ji)上(shang)還(huan)是含有非常微量(liang)氧(yang)和一些雜(za)質。按標(biao)準規定，氧(yang)的(de)含量(liang)不(bu)(bu)大于(yu)0.03%，雜(za)質總含量(liang)不(bu)(bu)大于(yu)0.05%，銅(tong)的(de)純(chun)度大于(yu)99.95%。

根據含氧(yang)量(liang)和雜質含量(liang)，無氧(yang)銅又分為一號和二號無氧(yang)銅。一號無氧(yang)銅純度達到99.97%，氧(yang)含量(liang)不(bu)大(da)(da)于0.003%，雜質總(zong)含量(liang)不(bu)大(da)(da)于0.03%;二號無氧(yang)銅純度達到99.95%，氧(yang)含量(liang)不(bu)大(da)(da)于0.003%，雜質總(zong)含量(liang)不(bu)大(da)(da)于0.05%。

無氧銅無氫脆現象，導電率(lv)高，加工性能(neng)和焊接性能(neng)、耐蝕(shi)性能(neng)和低溫(wen)性能(neng)均好。

TU1無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)板帶(dai)材(cai)是電真(zhen)空(kong)行業(ye)的(de)(de)關鍵材(cai)料，由(you)于電真(zhen)空(kong)器(qi)件如大功率(lv)(lv)發射管、磁控管、行波管、真(zhen)空(kong)電容(rong)器(qi)、真(zhen)空(kong)開關等，均需要(yao)在(zai) 920 ℃ 的(de)(de)高(gao)溫下(xia)，在(zai)氫氣中(zhong)進行釬焊(han)，此(ci)時氫氣與銅(tong)(tong)中(zhong)的(de)(de)氧(yang)(yang)(yang)(yang)(yang)會(hui)發生 Cu 2 O+H 2 → Cu+H 2 O 反應(ying)，所產(chan)生的(de)(de)水蒸(zheng)氣將會(hui)導(dao)致銅(tong)(tong)材(cai)的(de)(de)晶間裂紋，從而(er)引起真(zhen)空(kong)品件泄漏，因此(ci)世界各國都專門(men)規(gui)(gui)(gui)(gui)定(ding)(ding)有無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)專門(men)品種，對氧(yang)(yang)(yang)(yang)(yang)含(han)(han)(han)量(liang)作了嚴格(ge)(ge)規(gui)(gui)(gui)(gui)定(ding)(ding)，我國零號、 1 號、 2 號無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)中(zhong)氧(yang)(yang)(yang)(yang)(yang)含(han)(han)(han)量(liang)分別(bie)(bie)規(gui)(gui)(gui)(gui)定(ding)(ding)為(wei)(wei)(wei) 5ppm 、 20ppm 、 30ppm ，而(er)一般紫銅(tong)(tong)含(han)(han)(han)氧(yang)(yang)(yang)(yang)(yang)量(liang)規(gui)(gui)(gui)(gui)定(ding)(ding)為(wei)(wei)(wei) 200ppm ，美(mei)國 ASTM 標準中(zhong)電真(zhen)空(kong)用無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)規(gui)(gui)(gui)(gui)定(ding)(ding)了 2 個牌號，其(qi)氧(yang)(yang)(yang)(yang)(yang)含(han)(han)(han)量(liang)分別(bie)(bie)為(wei)(wei)(wei) 5 ppm 和 10 ppm ，除此(ci)之(zhi)外，由(you)于在(zai)高(gao)真(zhen)空(kong)的(de)(de)條件下(xia)(≤ 10 -8 /t )，銅(tong)(tong)中(zhong)易蒸(zheng)發的(de)(de)元素會(hui)破壞真(zhen)空(kong)環境，所以都要(yao)嚴格(ge)(ge)控制，特別(bie)(bie)是 Zn 、 P 、 Mn 、 As 、 Sb 、 Bi 等元素，為(wei)(wei)(wei)確保無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)的(de)(de)高(gao)導(dao)電性能，要(yao)嚴格(ge)(ge)控制雜(za)質含(han)(han)(han)量(liang)，無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)中(zhong)的(de)(de)銅(tong)(tong)含(han)(han)(han)量(liang)國家標準中(zhong)規(gui)(gui)(gui)(gui)定(ding)(ding)零號、 1 號、 2 號無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)中(zhong)銅(tong)(tong)含(han)(han)(han)量(liang)分別(bie)(bie)規(gui)(gui)(gui)(gui)定(ding)(ding)為(wei)(wei)(wei) 99.99 、 99.97 、 99.95 ;無(wu)氧(yang)(yang)(yang)(yang)(yang)銅(tong)(tong)制品的(de)(de)導(dao)電率(lv)(lv)應(ying)達到 100%IACS 。

鉛(Pb) ≤0.003

鋅(Zn) ≤0.003

鐵(Fe) ≤0.004

磷(P) ≤0.002

鉍(Bi) ≤0.001

銻(ti)(Sb) ≤0.002

硫(liu)(S) ≤0.004

錫(Sn) ≤0.002

鎳(Ni) ≤0.002

砷(As) ≤0.002

氧(O) ≤0.002

銅+銀(Cu+Ag) ≥99.97

雜質總各% ≤0.03