同樣重要的是，氧在與大部分雜質(zhì)反應(yīng)的過(guò)程中都起到了一個(gè)清除器的作用，而這些雜質(zhì)當(dāng)它們?nèi)芙庠阢~基質(zhì)中時(shí)對(duì)其特性和退火反應(yīng)都有巨大的影響作用。相反，當(dāng)這些雜質(zhì)與不可溶解的氧化物混合在一起的時(shí)候，這些壞作用就被抵消了。從表3可以看出，ETP銅導(dǎo)電率的值是2ppm。因而，ETP銅中氧的含量大致在175和45ppm之間。由于分散雜質(zhì)容易引起熱裂，所以通常都盡量避免低氧值。相反，超于這一限制的氧氣值并不常見(jiàn)，因?yàn)檫@對(duì)可成形性具有附作用。
執(zhí)行器IC20-15Q3T芯科技，芯創(chuàng)新；88621007
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