文档介绍：硕士论文中碳钢液相感应碳氮共渗研究摘要表面处理技术是改善钢铁材料表面性能,提高表面硬度和耐磨性的重要手段,开发高效率、低能耗、环保的表面处理方法一直是人们努力的目标。液相感应渗入技术是一种新型表面化学热处理技术,本文采用液相感应渗入技术对中碳钢进行处理,构建了液相感应渗入试验装置,探讨了在三乙醇胺和甲酰胺溶液中进行碳氮共渗的可行性,研究了感应加热电流、加热时间对碳氮共渗层的影响,确定了合适的工艺参数,用SEM、 EDS等对渗层组织、成分进行了分析,测试了碳氮共渗层从表面到基体的硬度变化。研究结果表明:在三乙醇胺溶液中未能得到渗层,在甲酰胺溶液能够获得碳氮共渗层。感应加热电流和感应加热时间是影响渗层形成的重要工艺参数,采用大电流使试样加热到共渗温度,之后用小电流保持共渗温度的两阶段加热方法既能够防止试样过热, 又能获得共渗层。在电流固定的条件下,渗层的厚度随着保温时间的延长而增加。渗层均匀致密,由外白层、内自层和过渡层组成,自层中含有碳、氮元素。采用不同的电流分段加热时,加热电流与保温电流不能相差太大,否则试样表面的红热状态难以维持。当选用425A的加热电流,280A的保温电流,处理6min后,, 渗层厚达80Hm,最大硬度592HV。关键词:感应加热,甲酰胺,碳氮共渗 AbSt“吼硕士论文 Abstract InOrdert0蚰proVe hardness a11d、Ⅳearresist锄ce 0fthe matI:rials, 仃aditionalsul曲ce仃eating methods arealso恤main deVelop am曲e佑ciency, low energy consumption,enViromnentallymendly trea缸nent method h嬲is our goal. Liquid induction satllration teclulique is a new仃eatment ofthe肌ochemical processing i11duction鼢turationtecllIlique iIlsolutionwaS印plied ofmedi啪carbon build adeViceofliquid ),of r习lpidcarbllrizing and carbonitriding saturationinfon】∞mide龇ld triethanolamine was discussed.’nle innuence ofthecu玎em aIldtime tothenlickness oftl:忙layerw嬲maillly analyzed,tlle bestpa眦leter oftechIlicsw舔applied t量lrou曲a mo印h0109y,s仃ucture ofsurfac:emodifitionlayer waS observed by of s眦face modification layer isobseⅣed thickness ofsaturationlayer、Ⅳ弱 . ne resultsindicatedthat印pliedhi曲毹quency power intriethallol锄ine,could not achieVecarburizing、Ilitriding inmedium andtime are imponant process parameterS oftllefonnation alarge s锄ple totlletemperature ofinfiltration,tIlen、研th small cun。ent tokeep thetemperature of tllet、)∞一stageheating method is notoIlly topreVent oVerheating ofthes锄ple,but also t0 obtain atotalofdi鼽sion tIleconditionsfixedinthecu玎em,me t11icknessofme layeriIlcreased诵t