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    • 29. 发明申请
    • GASEOUS SULFUR TREATMENT METHODS FOR COPPER ZINC ALLOYS
    • 用于铜合金的气相硫处理方法
    • US20150129088A1
    • 2015-05-14
    • US14600673
    • 2015-01-20
    • NIBCO INC.
    • Benjamin L. Lawrence
    • C23C8/08
    • C23C8/08C23C8/42
    • A method of making a corrosion resistant brass component that includes the steps: forming a gaseous atmosphere containing labile sulfur by combustion of potassium bisulfate or hydrogen sulfide; and contacting surfaces of a finished brass component with the gaseous atmosphere containing labile sulfur. The surfaces of the brass component are contacted with the gaseous atmosphere at an elevated temperature for a time sufficient to form a metal-sulfide rich layer of at least 5 microns in thickness. Further, the brass component is corrosion resistant after the contacting step as determined by standardized testing that yields dezincification penetration of less than 200 microns in depth.
    • 一种制造耐腐蚀黄铜组分的方法,包括以下步骤:通过硫酸氢钾或硫化氢的燃烧形成含有不稳定硫的气态气氛; 并使成品黄铜组分的表面与含有不稳定硫的气态气氛接触。 黄铜组分的表面在高温下与气态气体接触一段足以形成至少5微米厚的金属硫化物富集层的时间。 此外,在通过标准测试确定的接触步骤之后,黄铜组分是耐腐蚀性的,其产生深度小于200微米的脱锌渗透。