首页> 外文期刊>Comptes Rendus Chimie >Amelioration de la tenue a la corrosion atmospherique de materiaux utilises en connectique(nickel dore). Traitements de surface par implantations d'ions
【24h】

Amelioration de la tenue a la corrosion atmospherique de materiaux utilises en connectique(nickel dore). Traitements de surface par implantations d'ions

机译:改进了连接器(金镍)中使用的材料的耐大气腐蚀性能。离子注入的表面处理

获取原文
获取原文并翻译 | 示例
           

摘要

Improvement of the atmospheric corrosion resistance of materials used in connectics. Surface treatments by ion implantation. Tests of corrosion of a material, constituted of brass covered with an electrochemical nickel coating (thickness approx = 5 #mu#m) and with a gold coating (thickness approx = 0.4 #mu#m), used in electrical contadct applicantions, havebeen carried out in humid synthetic air with low contents of NO_2 (0.2 vpm) and Cl_2 (0.01 vpm). The results obtained show that the corrosion products are well localised on the surface. The aggregates formed are principally constituted of basic nitrate, sulphate and chloride of nickel and zinc. These studies showed that the corriosion of the material is due to the presence of porosities in the gold and nickel layers. X-ray analysis (SEM/EDS) revealed the presence of carbon in these porosities, probably related to the presence of organiccompounds in the electrolytic coating baths. During the galvanic corrosion of nickel and zinc, the carbon is rejected to the periphery of the aggregates. The amount of carbon was determined by Van De Graff analysis, by (d,p)nuclear reaction. Some treatments of the material by ion implantation (titanium or titanium and nitrogen or helium) have been realised in order to suppress the porosities of the gold layer. These treatments lead to a remarkable improvement of the corrosion resistance of the material
机译:改善用于连接体的材料的耐大气腐蚀性能。通过离子注入进行表面处理。进行了对材料的腐蚀试验,该材料由涂有电化学镍涂层(厚度约为5#mu#m)的黄铜和涂有金涂层(厚度约为0.4#mu#m)的用于电污染用途的材料组成在潮湿的合成空气中,其中NO_2(0.2 vpm)和Cl_2(0.01 vpm)的含量低。获得的结果表明腐蚀产物很好地定位在表面上。形成的聚集体主要由镍和锌的碱性硝酸盐,硫酸盐和氯化物组成。这些研究表明,材料的腐蚀是由于金和镍层中存在孔隙。 X射线分析(SEM / EDS)表明,在这些孔隙中存在碳,这可能与电解镀液中有机化合物的存在有关。在镍和锌的电化腐蚀期间,碳被排到聚集体的外围。通过(d,p)核反应,通过Van De Graff分析确定碳的量。为了抑制金层的孔隙率,已经实现了通过离子注入(钛或钛以及氮或氦)对该材料进行的一些处理。这些处理大大提高了材料的耐腐蚀性

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号