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首页> 外文期刊>Journal of Materials Engineering and Performance >Investigation on Wear Characteristics of TiBFe Composites Containing 10 at.% Boron and 10-30 at.% Iron
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Investigation on Wear Characteristics of TiBFe Composites Containing 10 at.% Boron and 10-30 at.% Iron

机译：含有10.％硼的Tibfe复合材料磨损特性的研究。％铁

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摘要

Present work aims to synthesize spark plasma-sintered Ti-TiB-Fe composites with varying Fe content via reaction between Ti, Fe and TiB(2)and explore their potential as tribological material. The content of boron was kept constant at 10 at.%, whereas the Fe was added in 10, 20 and 30 at.% to result in three different types of composites designated as TiBFe1010, TiBFe1020 and TiBFe1030. Sliding wear tests were conducted under a reciprocating mode against a counterface of AISI 52100 steel ball at different loads of 10, 15, 20 and 25 N. In situ reaction between Ti, TiB(2)and Fe resulted in the formation of TiB and FeTi as confirmed by x-ray diffraction analysis. The hardness of the composites increased from 488 to 871 HV(0.1)with the addition of Fe from 10 to 30 at.%, which has been attributed to the increasing amount of hard and brittle FeTi. The composite TiBFe1020 showed the lowest wear rate, whereas TiBFe1030 showed the lowest coefficient friction at all the loads. The observed behavior has been explained on the basis of the presence of a transfer layer of wear debris on the worn surface, its detachment, and area coverage provided to underlying material along with the hardness of the composite. The mechanisms of wear appear to be a combination of plowing, abrasion, and delamination, as revealed by SEM examination of worn surfaces.
机译：本工作旨在通过Ti、Fe和TiB（2）之间的反应合成具有不同Fe含量的火花等离子烧结Ti-TiB-Fe复合材料，并探索其作为摩擦学材料的潜力。硼的含量保持在10 at.%不变，而铁是在10、20和30%时添加的形成三种不同类型的复合材料，分别命名为TiBFe1010、TiBFe1020和TiBFe1030。在往复模式下，在10、15、20和25 N的不同载荷下，对AISI 52100钢球的背面进行滑动磨损试验。Ti、TiB（2）和Fe之间的原位反应导致TiB和FeTi的形成，x射线衍射分析证实了这一点。随着Fe含量从10%增加到30%，复合材料的硬度从488 HV（0.1）增加到871 HV（0.1），这是由于硬而脆的FeTi数量的增加。在所有载荷下，复合材料TiBFe1020的磨损率最低，而TiBFe1030的摩擦系数最低。已根据磨损表面上磨损碎屑转移层的存在、其分离、底层材料的面积覆盖以及复合材料的硬度对观察到的行为进行了解释。磨损机制似乎是犁削、磨损和分层的组合，磨损表面的SEM检查显示了这一点。

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