Effect of Super-Gravity Field on the Purification and Solidification Structure of Oxygen-Free Copper (OFC)

With the rapid development of the electrical and electronic industries, the quality requirements for oxygen-free copper (OFC)Oxygen-free copper materials have become increasingly stringent, and the difficulty of oxygen removal content in OFC has increased accordingly. In this paper, the effect of super-gravitySuper-gravity field on the purification of high-purity metals was investigated using oxygen-free copperOxygen-free copper. Microanalysis revealed that the oxygen elements in the samples primarily existed in the form of cuprous oxide. The effects of different gravity coefficients (G) and centrifugal time (t) on the distribution of oxygen in samples at 1200 ℃ were studied. The results showed that oxygen elements move in the opposite direction of the super-gravitySuper-gravity. Moreover, the oxygen contentOxygen content in the sample could be significantly reduced from 31.37 ppm to 2.47 ppm at G = 1000 and t = 60 s, while the electrical conductivityElectrical conductivity improved from 103.23% IACS to 105.95% IACS. It is concluded that solidificationSolidification under super-gravity conditions promotes grain refinement in the sample, with an increase in the gravity coefficient being advantageous.