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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >Synergistic effect of the addition of TiO2 feedstock on solid particle erosion of Ni/Al2O3 and Ni/Cr2O3 coatings
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Synergistic effect of the addition of TiO2 feedstock on solid particle erosion of Ni/Al2O3 and Ni/Cr2O3 coatings

机译：Ni / Al2O3和Ni / Cr2O3涂层固体颗粒腐蚀加入TiO2原料的协同效应

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摘要

Pipelines are widely used for transportation of solids in many chemical and mining industries. Erosion wear is considered as one of the important parameters which play a significant role in slurry transportation system by affecting both initial cost and life of slurry pipelines. Erosion wear of pipeline is not only important from the design aspect but also from the equipment performance, reliability and operational durability. In the present work, erosion wear due to solid-liquid mixture has been investigated using a slurry erosion pot tester. The erosion tests have been conducted on pipeline material Mild steel (M.S.) to establish the influence of rotational speed, particle size, solid concentration and time duration. Sand was taken as the erodent material with solid concentrations ranging from 10 to 40% (by weight). The experiments were performed at four different speeds such as 750, 1000, 1250 and 1500 rpm with time duration of 30, 60, 90 and 120 min. In the present study, 5% TiO2 feedstock powder was blended with 80Ni-15Cr(2)O(3) and 80Ni-15Al(2)O(3) coating powders to increase their erosion wear resistance. Coating powders are deposited on pipeline material by thermal spray HVOF coating. Experimental results indicate that erosion wear has a high dependence on rotational speed, time duration and nature of erodent solid particles. Significant improvement in erosion wear resistance was also observed with the addition of 5% Titanium dioxide (TiO2) feedstock powder. 80Ni-15Cr(2)O(3) -5TiO(2) coating shows better performance against solid particle erosion as compared to 80Ni-15Al(2)O(3) -5TiO(2). The results are compared with un-coated mild steel pipeline material.
机译：管道广泛用于许多化学和采矿行业的固体运输。侵蚀磨损被认为是通过影响浆料管道的初始成本和寿命在淤浆运输系统中发挥着重要作用的重要参数之一。管道的侵蚀磨损不仅是设计方面的重要性，而且来自设备性能，可靠性和操作耐用性。在本作的工作中，使用浆料腐蚀罐测试仪研究了由于固液混合物引起的侵蚀磨损。已经在管道材料温和钢（M.）上进行了侵蚀测试，以确定转速，粒度，固体浓度和持续时间的影响。作为砂岩作为蚀刻材料，其固体浓度为10-40％（重量）。实验以四种不同的速度进行，例如750,1000,1250和1500rpm，持续时间为30,60,90和120分钟。在本研究中，将5％TiO 2原料粉末与80Ni-15cr（2）O（3）和80Ni-15Al（2）O（3）涂布粉末混合以提高其腐蚀耐磨性。通过热喷涂HVOF涂层沉积涂布粉末在管道材料上。实验结果表明，侵蚀磨损具有高依赖性对腐蚀固体颗粒的转速，时间持续时间和性质。通过加入5％二氧化钛（TiO 2）原料粉末，还观察到侵蚀耐磨性的显着改善。 80Ni-15cr（2）O（3）-5TiO（2）涂层与80Ni-15Al（2）O（3）-5TiO（2）相比，涂层对固体颗粒腐蚀的性能更好。将结果与未涂覆的低碳钢管道材料进行比较。

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