PREPARATION METHOD FOR COPPER OR COPPER ALLOY MATERIAL, AND REFINING AGENT FOR REFINING

摘要

A preparation method for a copper or copper alloy material, and a refining agent for refining. The refining agent for refining the copper or copper alloy material is an alloy composed of a Cu element, an Re element, and an M element. The Re element is a rare earth element and the M element is an alkali metal element or an alkaline earth metal element. The refining agent is able produce a compound having a relatively small density with oxygen, phosphorus, or sulphur impurities, thereby achieving the goal of removing impurities. The contents of oxygen, phosphorus, and sulphur in a copper or copper alloy material refined using the present refining agent are all on the ppm scale. The invention also features low preparation costs.