| 摘要: |
| 通过在药芯焊丝中添加锆元素来制备含锆高铬铸铁堆焊层，用扫描电镜及EDS对高铬铸铁堆焊层中锆元素的存在状态进行观察分析，且对含锆和不含锆材料的宏观硬度及耐磨性进行测定。结果表明，锆在高铬铸铁堆焊层中全部是以碳化锆的形式存在的。碳化锆的数量与含锆量有关。铬及铁元素不进入碳化锆颗粒，锆元素也不进入碳化铬及基体。堆焊层的硬度及耐磨性试验证明，加入锆元素后材料的宏观硬度有所提高，但其耐磨性有所降低。 |
| 关键词: 锆 高铬铸铁 堆焊层 |
| DOI： |
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| The Status of Zr in the High Cr Cast Iron Hardfacing Layer |
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TIAN Da–biao
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Beijing Zhongmei Datian Wear Risistant material Ltd.Co., Beijing 100096
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| Abstract: |
| The status of Zr element and the amount of ZrC in high Cr cast iron hardfacing layer with the content of Zr varied were analyzed by using SEM and EDS. The wearing resisitance, hardness in layer contain Zr and without Zr elment were tested. The layer was prepared by open arc hardfacing prosess with adding Zr elment, using alloy–powder–core–wire. All Zr forms ZrC with C. The amount of ZrC has something to do with the amount of Zr. Cr and Fe do not enter ZrC and Zr does not enter Cr7C3 and the matrix. The tests demonstrate that the layer adding Zr elment can be made higher hardness, but lower wearing resisitance. |
| Key words: Zr high Cr cast iron hardfacing layer |
