In this study, Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} and graphene-reinforced aluminium matrix composites (AMCs) with various contents (Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}: 1, 3, 6, 9 wt%; graphene: 0.1, 0.3, 0.5 wt%) were produced by the powder metallurgy method. The phase and microstructure analyses of the composites were performed by X-ray diffractometry and scanning electron microscopy, respectively. To investigate the tribological behaviour of Al–Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} and Al–Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}–graphene composites, pin-on-disc experiments were conducted with different loads (F=10\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$F = 10$$\end{document}, 20 and 30 N) at a constant sliding speed (200 rpm). Thus, the effects of Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} and graphene contents on microstructure, Vickers hardness, apparent density, porosity, wear rate and friction coefficient of AMCs were investigated. Test results reveal that the highest Vickers hardness (66±1HV\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$66 \pm 1\hbox { HV}$$\end{document}), the lowest porosity (5.6%), wear rate (3.1×10-5mm3N-1\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$3.1 \times 10^{\mathrm {-5}}\hbox { mm}^{\mathrm {3}}\hbox { N}^{\mathrm {-1}}$$\end{document}m-1)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {m}^{\mathrm {-1}})$$\end{document} and friction coefficient (0.13) were obtained for Al–9Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}–0.1 graphene. After attaining 0.1% graphene content, agglomeration was detected from the microstructure images of Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}–graphene-reinforced AMCs. It was concluded that Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} had an outstanding wear resistance and graphene was a good solid lubricant for AMCs.

中文翻译：

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石墨烯的微观结构和磨损行为–$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$ 二元颗粒增强铝混合复合材料

复合材料的物相和微观结构分析分别通过 X 射线衍射和扫描电子显微镜进行。研究 Al–Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{ 的摩擦学行为upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{ document} 和 Al–Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \ setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}–石墨烯复合材料，使用不同的负载（F=10\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage {mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$F = 10$$\end{document}, 20 和 30 N) 以恒定的滑动速度 (200 rpm) . 因此，Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \ setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} 和研究了石墨烯含量对AMCs微观结构、维氏硬度、表观密度、孔隙率、磨损率和摩擦系数的影响。1 \times 10^{\mathrm {-5}}\hbox { mm}^{\mathrm {3}}\hbox { N}^{\mathrm {-1}}$$\end{document}m-1 )\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin} {-69pt} \begin{document}$$\hbox {m}^{\mathrm {-1}})$$\end{document} 和摩擦系数 (0.13) 获得了 Al–9Si3N4\documentclass[12pt] {minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin {document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document}–0.1 石墨烯。在达到 0.1% 石墨烯含量后，从 Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{ 的微观结构图像中检测到团聚upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{文档}-石墨烯增强型 AMC。得出的结论是 Si3N4\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength {\oddsidemargin}{-69pt} \begin{document}$$\hbox {Si}_{\mathrm {3}}\hbox {N}_{\mathrm {4}}$$\end{document} 有一个出色的耐磨性，石墨烯是 AMC 的良好固体润滑剂。