TiSiC和TiAlC颗粒对TC4合金微弧氧化层微观结构及耐磨性的影响

Effect of TiSiC and TiAlC Particles on Microstructure and Wear Resistance of Microarc Oxidation Layers on TC4 Alloy.

作者信息

Gu Gaoyang, Shang Jian, Lin Dan

机构信息

School of Materials Science and Engineering, Liaoning University of Technology, Jinzhou 121001, China.

出版信息

Materials (Basel). 2022 Dec 19;15(24):9078. doi: 10.3390/ma15249078.

DOI:10.3390/ma15249078

PMID:36556887

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9788054/

Abstract

Microarc oxidation (MAO) layers were prepared using 8g/L NaSiO + 6g/L (NaPO) + 4g/L NaWO electrolyte with the addition of 2g/L TiSiC/TiAlC particles under constant-current mode. The roughness, porosity, composition, surface/cross-sectional morphology, and frictional behavior of the prepared MAO layers were characterized by 3D real-color electron microscopy, scanning electron microscopy, X-ray energy spectrometry, X-ray diffractometry, and with a tribo-tester. The results showed that the addition of TiSiC and TiAlC to the electrolyte reduced the porosity of the prepared layers by 9% compared with that of the MAO layer without added particles. The addition of TiSiC/TiAlC also reduced the friction coefficient and wear rate of the prepared layers by 35% compared with that of the MAO layer without added particles. It was found that the addition of TiAlC particles to the electrolyte resulted in the lowest porosity and the lowest wear volume.

摘要

采用8g/L NaSiO + 6g/L (NaPO) + 4g/L NaWO电解液，在恒流模式下添加2g/L TiSiC/TiAlC颗粒制备微弧氧化（MAO）层。通过三维真彩色电子显微镜、扫描电子显微镜、X射线能谱仪、X射线衍射仪以及摩擦磨损试验机对制备的MAO层的粗糙度、孔隙率、成分、表面/横截面形貌和摩擦行为进行了表征。结果表明，与未添加颗粒的MAO层相比，向电解液中添加TiSiC和TiAlC可使制备层的孔隙率降低9%。与未添加颗粒的MAO层相比，添加TiSiC/TiAlC还可使制备层的摩擦系数和磨损率降低35%。研究发现，向电解液中添加TiAlC颗粒可使孔隙率最低且磨损体积最小。