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首页> 外文会议>International Conference on Materials Science and Technologies >Thermal Shock Influence on Some Abrasive Wear Resistant Nickel and Cobalt Complex Alloy's Microstructure and Properties
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Thermal Shock Influence on Some Abrasive Wear Resistant Nickel and Cobalt Complex Alloy's Microstructure and Properties

机译：耐热冲击对一些磨料耐磨镍和钴复合合金的微观结构和性能

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摘要

The present paper shows the experimental results obtained on two complex alloys Co-Cr-W-C-Fe-Ni-Si-Mn-Mo and Ni-Cr-Fe-B-Si-C-Co alloys deposited on copper support by welding (TIG). Well - known for their excellent abrasive wear, corrosion and high temperature erosion resistance, these materials were chosen as protective solutions for some highly mechanically and thermally stressed devices, namely the blast tuyeres of blast furnaces. A testing method which simulates as near as possible the real working conditions is the quick thermal shock, consisting in heating at the chosen testing temperature followed by cooling in cool air spray, for 25 cycles. Testing parameters were set according to the blast tuyere device working conditions. In this paper, the coatings microstructure's comparative changes consequently to quick thermal shock were monitoring, because this affect the device lifetime and mechanical characteristics. The untested samples as well as on quick thermal shocked ones was investigated using X-ray diffraction, scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS).
机译：本文介绍了通过焊接沉积在铜载体上的两种复合合金CO-CO-FE-FE-SI-MN-MO和Ni-Cr-Fe-B-Si-C-Co合金中获得的实验结果（TIG ）。众所周知，由于它们优异的磨料磨损，腐蚀和高温腐蚀性，这些材料被选择为用于一些高机械和热应力装置的保护溶液，即高炉的喷砂灌毒。尽可能靠近实际工作条件模拟的测试方法是快速热冲击，包括在所选测试温度下加热，然后在冷空气喷雾中冷却，25个循环。根据Blast Tuyere设备工作条件设置测试参数。在本文中，涂层微结构的比较变化在于快速热冲击监测，因为这会影响器件寿命和机械特性。使用X射线衍射，扫描电子显微镜（SEM）和能量分散X射线光谱（EDS）研究未经测试的样品以及快速热震动的样品。

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