替代电镀铬的高速电弧喷涂3Cr13涂层的耐磨性能研究 毕业论文.docVIP

中国石油大学胜利学院本科毕业论文 替代电镀铬的高速电弧喷涂3Cr13涂层的耐磨性能研究 学生姓名： 学 号： 专业班级：材料成型及控制工程2班 指导教师： 2013年6月5日 替代电镀铬的高速电弧喷涂3Cr13涂层 的耐磨性能研究 摘 要 镀铬层有着硬度高、耐磨性好和镀层色泽经久不变等特点，但工艺电流效率低，另外六价铬对人体和环境有较大的危害性，国内外研究者想用其它镀层取代它。高速电弧喷涂技术是近年来发展起来的新型热喷涂技术，该技术具有优质、高效、低成本等特点。本文实验对高速电弧喷3Cr13涂层进行了组织及性能分析，并与电镀硬铬工艺、性能成本进行了对比。 研究结果表明：高速电弧喷涂3Cr13涂层表面平整无无缝隙、涂层均匀.在涂层硬度、涂层结合力、耐磨性能方面高速电弧喷涂3Cr13涂层都接近甚至优于电镀硬铬层。所以，用高速电弧喷涂技术代替电镀铬技术具有良好的发展前景。 关键词：电弧喷涂；硬铬；3Cr13；耐磨性能；涂层 Study on wear-resistant resistance of 3Cr13 coating by arc spraying for replacing hard chrome plating ABSTRACT Chrome layer has a hardness, abrasion resistance and good coating characteristics of the same color perishable.However, the low efficiency of current, In addition to human and environmental hexavalent chromium a greater danger, many researchers would like to replace it with other coating. High-speed electric arc spraying technology developed in recent years is a new type of thermal spray technology, This technology has the characteristics of high-quality, high efficiency, low-cost, and so on. In this paper, the experimental high-speed electric arc spraying 3Cr13 coating for the organization and performance analysis, And compare with hard-chrome plating technology, performance and cost. The results show that, 3Cr13-arc spraying the surface coating formed a seamless, coating uniformity. In coating hardness, coating combination of wear resistance in high-speed arc spraying 3Cr13 coatings are close to or even better than that of the hard chromium plating.So,the arc spraying with high-speed chrome plating technology instead of technology has good prospects for development. Keywords: Arc spraying; alternative hard chrome plating; 3Cr13; wear resistance 目录 第1章 前言 1 1.1 电镀硬铬的用途及发展现状 1 1.2 电镀硬铬的缺点 3 1.3 热喷涂技术 3 1.3.1 定义 3 1.3.2喷涂材料 4 1.3.3 涂层功能 4 1.3.4 热喷涂技术在冶金工业中的开发与应用 6 1.4 电弧喷涂优点 11 1.5 本文研究的目的、意义及内容 12 第2章 实验原理与方法 14 2.1 电弧喷涂原理 14 2.2 电镀铬工艺流程及参数 15 2.3 金相微观组织分析 16 2.4 硬度测量 18 2.5 涂层结合原理与测量结合力方法 19 2.6 冲蚀