...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Archives of Metallurgy and Materials >BRAZING A GRAPHITE COMPOSITE TO MOLYBDENUM ALLOY TZM USING ACTIVE COPPER-BASED FILLER METALS WITH CHROMIUM ADDITIVE
【24h】

BRAZING A GRAPHITE COMPOSITE TO MOLYBDENUM ALLOY TZM USING ACTIVE COPPER-BASED FILLER METALS WITH CHROMIUM ADDITIVE

机译：使用活性铜基填充金属和铬添加剂将石墨复合物钎焊到钼合金TZM

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The paper presents issues of brazing the graphite composite CFC 222 with the molybdenum alloy TZM. Both materials demonstrate significant differences in physicochemical and mechanical properties that significantly affect brazing conditions and properties of the brazed joints. The performed brazing operation was preceded by a wettability test that decided selection of the filler metal. From among various copper-based filler metals, the best appeared a copper brazing filler metal with some addition of active chromium. Presented is a model of the wedge test, helpful at optimising the brazing process of two materials with different properties. Width of the brazing gap was selected on the ground of metallurgical examinations after the wedge test and transferred to the joint with a parallel gap. Applied were various forms of copper-based filler metals in that chromium was present as an alloying component, a component of the brazing paste, powder between copper covers and as a galvanic coating of a pure-copper strip. Evaluation of brazed joints of the composite CFC 222 with the TZM alloy is presented on the grounds of metallographic examinations by means of light microscopy and microhardness measurements, electron microscopy, EDX analysis of elements and XRD analysis of phase composition of the reactive zone.
机译：本文提出了用钼合金TZM钎焊石墨复合材料CFC 222的问题。两种材料在物理化学和机械性能上均表现出显着差异，这些差异显着影响了钎焊条件和钎焊接头的性能。进行钎焊操作之前要进行润湿性测试，以决定填充金属的选择。在各种铜基填充金属中，最好的是铜钎焊金属，其中还添加了活性铬。提出的是楔形测试的模型，有助于优化两种具有不同特性的材料的钎焊过程。楔形测试后，根据冶金学检查选择钎焊间隙的宽度，并以平行间隙的方式转移到接头处。应用了各种形式的铜基填充金属，其中铬以合金成分，钎焊膏成分，铜覆盖层之间的粉末以及纯铜带的电镀层形式存在。基于金相检查，通过光学显微镜和显微硬度测量，电子显微镜，元素的EDX分析和反应区相组成的XRD分析，对复合CFC 222与TZM合金的钎焊接头进行了评估。

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