? 關于氧(yang)(yang)(yang)的(de)吸入(ru)(ru)和脫(tuo)去(qu)以(yi)(yi)(yi)(yi)及它的(de)存在(zai)(zai)(zai)狀態(tai)(tai) ??生(sheng)產(chan)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)的(de)陰極銅(tong)(tong)(tong)的(de)含氧(yang)(yang)(yang)量一(yi)般在(zai)(zai)(zai)10—50ppm，在(zai)(zai)(zai)常(chang)溫下(xia)氧(yang)(yang)(yang)在(zai)(zai)(zai)銅(tong)(tong)(tong)中(zhong)的(de)固溶度(du)約2ppm。低(di)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)的(de)含氧(yang)(yang)(yang)量一(yi)般在(zai)(zai)(zai)200（175）—400（450）ppm，因此氧(yang)(yang)(yang)的(de)進入(ru)(ru)是(shi)在(zai)(zai)(zai)銅(tong)(tong)(tong)的(de)液(ye)(ye)態(tai)(tai)下(xia)吸入(ru)(ru)的(de)，而(er)(er)上(shang)引法無(wu)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)則(ze)(ze)相(xiang)反(fan)，氧(yang)(yang)(yang)在(zai)(zai)(zai)液(ye)(ye)態(tai)(tai)銅(tong)(tong)(tong)下(xia)保持相(xiang)當時間后，被還原而(er)(er)脫(tuo)去(qu)，通常(chang)這種桿(gan)(gan)(gan)(gan)的(de)含氧(yang)(yang)(yang)量都在(zai)(zai)(zai)10—50ppm以(yi)(yi)(yi)(yi)下(xia)，*低(di)可達1-2ppm，從組(zu)(zu)織上(shang)看，低(di)氧(yang)(yang)(yang)銅(tong)(tong)(tong)中(zhong)的(de)氧(yang)(yang)(yang)，以(yi)(yi)(yi)(yi)氧(yang)(yang)(yang)化銅(tong)(tong)(tong)狀態(tai)(tai)，存在(zai)(zai)(zai)于晶(jing)粒邊界附近(jin)，這對(dui)低(di)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)而(er)(er)言可以(yi)(yi)(yi)(yi)說是(shi)常(chang)見的(de)但(dan)對(dui)無(wu)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)則(ze)(ze)很(hen)少見。氧(yang)(yang)(yang)化銅(tong)(tong)(tong)以(yi)(yi)(yi)(yi)夾(jia)雜形式在(zai)(zai)(zai)晶(jing)界出現對(dui)材(cai)料的(de)韌性(xing)產(chan)生(sheng)負面影響。而(er)(er)無(wu)氧(yang)(yang)(yang)銅(tong)(tong)(tong)中(zhong)的(de)氧(yang)(yang)(yang)很(hen)低(di)，所(suo)以(yi)(yi)(yi)(yi)這種銅(tong)(tong)(tong)的(de)組(zu)(zu)織是(shi)均勻的(de)單相(xiang)組(zu)(zu)織對(dui)韌性(xing)有利。在(zai)(zai)(zai)無(wu)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)中(zhong)的(de)多孔性(xing)是(shi)不常(chang)見的(de)，而(er)(er)在(zai)(zai)(zai)低(di)氧(yang)(yang)(yang)銅(tong)(tong)(tong)桿(gan)(gan)(gan)(gan)中(zhong)則(ze)(ze)是(shi)常(chang)見的(de)一(yi)種缺陷。?