基于不同表面状态下的TC4钛合金螺栓摩擦机理研究
Research on friction mechanism of TC4 titanium alloy bolt based on different surface states
高学敏 1姚建革 1冯韶伟 2冯德荣 1沈鹏 1郭超越1
作者信息
- 1. 河南航天精工制造有限公司,河南 信阳 464000;河南省紧固连接技术重点实验室,河南 信阳 464000
- 2. 北京宇航系统工程研究所,北京 100076
- 折叠
摘要
针对钛合金紧固件易发生的黏着和"咬死"等问题,文章研究在TC4 表面未处理(LT)、脉冲阳极氧化(PA)、脉冲阳极氧化+涂铝(PA-Al)和脉冲阳极氧化+涂MoS2(PA-MoS2)等 4 种表面状态样品不同测试条件下的摩擦磨损特性,揭示不同表面状态条件对摩擦磨损机理的影响.选用摩擦磨损试验机(UMT-3)开展球-盘摩擦磨损实验,利用SEM-EDS、三维白光干涉形貌仪、光学显微镜仪器等对样品的磨痕形貌进行表征.通过对摩擦系数、磨损率、磨损形貌进行分析研究,探究不同表面状态下钛合金摩擦副的摩擦特性和磨损机理.研究结果表明,应避免TC4 和TC4 材料直接接触可以有效防止黏着磨损发生,脉冲阳极氧化(PA)样品减摩耐磨性最佳,阳极氧化涂MoS2 样品次之.
Abstract
Aiming at the problems of adhesion and"bite"that are prone to occur in titanium alloy fasteners,this study investigates the friction and wear characteristics of four surface state samples under different testing conditions:untreated TC4 surface(LT),pulse anodizing(PA),pulse anodizing+aluminum coating(PA-Al),pulse anodizing+MoS2 coating(PA-MoS2),and reveals the influence of different surface state conditions on the friction and wear mechanism.Using a friction and wear testing machine(UMT-3),a ball disc friction and wear experiment was conducted,and the wear morphology of the sample was characterized using SEM-EDS,three-dimensional white light interferometry,optical microscopy instruments,etc.By analyzing and studying the friction coefficient,wear rate,and wear morphology,this study explores the friction characteristics and wear mechanism of titanium alloy friction pairs under different surface states.The results show that the direct contact between TC4 and TC4 materials can effectively prevent adhesive wear.Pulse anodizing(PA)samples have the best friction and wear resistance,followed by anodized MoS2 coated samples.
关键词
脉冲阳极氧化/MoS2/钛合金紧固件/耐磨性/磨损形貌/测试条件Key words
pulse anodizing/MoS2/titanium alloy fasteners/wear resistance/wear morphology/test conditions引用本文复制引用
基金项目
中国科协青年托举人才工程项目(2017QNRC001)
出版年
2024
NETL
NSTL
万方数据