摘要本文以Ti-6Al-4V为研究对象，在脉冲电源条件下利用液相等离子体的方法在基体表面制备了含有C、N、Ca、P等多元素复合表面改性层。系统研究了表面改性层的制备工艺，用能谱仪（EDS）元素组成进行了分析，通过X射线衍射仪对试样的相组成进行了分析，用显微硬度仪检测了试样截面的硬度，通过磨损实验仪往复摩擦初步研究了试样表面的摩擦性能，运用电化学工作站分析其电化学腐蚀行为。结果表明：配置的Ca(NO3)2-NaH2PO4和甲酰胺-水的多种物质混合溶液中，经过液相等离子体的方法，在Ti-6Al-4V表面制备一层含有Ca-P盐的复合膜层，实现钛合金表面C、N、Ca、P元素的同时复合。钙元素以磷酸钙盐和钛酸钙形式存在；磷元素以磷酸钙形式存在；碳氮元素以碳氮化钛形式存在。陶瓷性膜显著提高了材料的耐磨性和耐腐蚀性。87818

毕业论文关键词：Ti-6Al-4V，等离子体，表面改性层，硬度，摩擦性能，耐蚀性能

毕业设计说明书外文摘要

Title  Preparation and properties of ceramic coating containing Ca-P on Titanium alloy

Abstract Ti-6Al-4V is attractive material because of its excellent mechanical adaptability。 However, it’s resistance to frictional wear is poor, and its hardness is relative low。 Surface engineering techniques are widely used to improve the surface hardness and wear resistance of Ti-6Al-4V。Moreover, plasma electrolytic is verified to be possible for conversion the surface of Ti-6Al-4V。 In this dissertation, Ti-6Al-4V was researched by pulse voltage via plasma electrolytic。 The element carbon and nitrogen was compound on the surface of Ti-6Al-4V, also calcium and phosphorus was tested to be compound 。The surface structure and their corresponding elemental composition of the coating was equipped with EDS。 Coating phases were analyzed via XRD。 The hardness was characterized by micro-hardness tester。 The friction property and corrosion behavior were detected by specific machines。 The main conclusions were drawn as follows:源-于,优Y尔E论W文.网wwW.yOueRw.com 原文+QQ752018`766

In the mixed solution, which contains sodium phosphate, calcium nitrate and formamide, a compound coating containing carbon, nitrogen, calcium and phosphorus was prepared using the method plasma electrolytic。 The element calcium exists in the form of calcium phosphate and calcium titanate。 The element phosphorus exists in the form of calcium phosphate。 The element carbon and nitrogen form titanium carbonitride。 Ceramic membrane significantly increase wear resistance and corrosion resistance of the material。

Keywords   Ti-6Al-4V，plasma，surface coating，hardness，friction property，corrosion property

目   次

1 引言 1

1。1钛合金简介 1

1。2钛合金表面改性技术简介 1

1。3 液相等离子体电解技术在钛合金表面改性的研究现状 2

1。4本课题研究目的与内容 2

2 实验原理及方法 3

2。1  液相等离子体电解 3

2。2 实验材料及实验设备 3

3 实验结果和讨论 6

3。1处理时间对Ti-6Al-4V陶瓷膜的影响 6

3。2频率对Ti-6Al-4V陶瓷膜表面性能的影响。 10

3。3占空比对Ti-6Al-4V陶瓷膜性能的影响 14

4。电解液配方成分对表面改性层的影响初探