高铬铸钢表面激光熔覆复合涂层组织与性能研究的开题报告摘要高铬铸钢是一种重要的工程材料，在高温、高压、高磨损等恶劣环境下具有优异的耐蚀、耐磨性能。然而，高铬铸钢的表面容易出现氧化、腐蚀、磨损等问题，从而限制了其在实际工程中的应用。为了提高高铬铸钢表面的耐磨性能和防腐蚀能力，可以采用激光熔覆复合涂层技术。本文旨在对高铬铸钢表面激光熔覆复合涂层组织与性能进行研究和分析。首先，本文将介绍高铬铸钢表面激光熔覆复合涂层技术的基本原理和研究现状。然后，将介绍高铬铸钢表面涂层前的表面处理过程。接着，将详细探讨激光熔覆复合涂层的工艺参数对涂层组织和性能的影响，包括熔覆速度、功率、预热温度等。最后，将对高铬铸钢表面激光熔覆复合涂层的耐磨性能、防腐蚀性能、摩擦学性能等进行测试和分析，以评估该技术的实际应用价值。本研究可望为高铬铸钢表面激光熔覆复合涂层技术的发展提供重要的理论和实验基础，为该技术的实际应用提供科学依据和技术支持。关键词：高铬铸钢；激光熔覆；复合涂层；表面处理；耐磨性能；防腐蚀性能；摩擦学性能AbstractHighchromiumcaststeelisanimportantengineeringmaterialwithexcellentcorrosionresistanceandwearresistanceinharshenvironmentssuchashightemperature,highpressure,andhighwear.However,thesurfaceofhighchromiumcaststeelispronetooxidation,corrosion,andwear,whichlimitsitspracticalapplicationinengineering.Inordertoimprovethewearresistanceandcorrosionresistanceofthesurfaceofhighchromiumcaststeel,lasercladdingcompositecoatingtechnologycanbeused.Thisarticleaimstostudyandanalyzethestructureandperformanceoflasercladdingcompositecoatingsonthesurfaceofhighchromiumcaststeel.Firstly,thispaperwillintroducethebasicprincipleandresearchstatusoflasercladdingcompositecoatingtechnologyonthesurfaceofhighchromiumcaststeel.Then,thesurfacetreatmentprocessbeforecoatingthesurfaceofhighchromiumcaststeelwillbeintroduced.Furthermore,theeffectsofprocessparametersoflasercladdingcompositecoatingonthestructureandperformanceofcoatingswillbediscussedindetail,includingcladdingspeed,power,preheatingtemperature,etc.Finally,thewearresistance,corrosionresistance,frictionalpropertiesoflasercladdingcompositecoatingsonthesurfaceofhighchromiumcaststeelwillbetestedandanalyzedtoevaluatethepracticalapplicationvalueofthistechnology.Thisresearchisexpectedtoprovideimportanttheoreticalandexperimentalbasisforthedevelopmentoflasercladdingcompositecoatingtechnologyonthesurfaceofhighchromiumcaststeel,andtoprovidescientificbasisandtechnicalsupportforthepracticalapplicationofthistechnology.Keywords:highchromiumcaststeel;lasercladding;compositecoating;surfacetreatment;wearre