Fe基非晶涂层微结构与摩擦磨损行为研究  

Microstructure and Frictional Wear Behavior of Fe-Based Amorphous Coatings

作　　者：臧勃林 杨延格[2] 曹京宜 殷文昌 徐锋锋 姚海华[3] 周正[3] Zang Bolin;Yang Yange;Cao Jingyi;Yin Wenchang;Xu Fengfeng;Yao Haihua;Zhou Zheng(Unit 92228,People's Liberation Army,Beijing 100072,China;Shi-Changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;Faculty of Mate-rials and Manufacturing,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]中国人民解放军92228部队,北京100072 [2]中国科学院金属研究所师昌绪先进材料创新中心,辽宁沈阳110016 [3]北京工业大学材料与制造学部,北京100124

出　　处：《稀有金属》2024年第7期933-943,共11页Chinese Journal of Rare Metals

基　　金：国家自然科学基金项目(51771005,52371043,52171060)资助。

摘　　要：分别采用超音速火焰喷涂(HVOF)和大气等离子喷涂(APS)工艺制备了Fe_(57)Cr_(15)Nb_(4)B_(20)Si_(4)非晶合金涂层,并对其工艺适应性、微观组织结构和不同温度下摩擦磨损行为进行了系统研究。结果表明,HVOF和APS制备的Fe_(57)Cr_(15)Nb_(4)B_(20)Si_(4)非晶涂层与基体结合良好、组织均匀、无明显裂纹等缺陷。两种喷涂工艺制备的Fe基非晶涂层具有相似的相结构特征,但APS涂层非晶相含量显着高于HVOF涂层,且对APS工艺参数较为敏感,表现出非晶相随喷涂功率和距离的增大而增加的趋势。而Fe_(57)Cr_(15)Nb_(4)B_(20)Si_(4)合金对于HVOF工艺具有相对较好的适应性,涂层中非晶含量并未随喷涂工艺参数改变而发生显着变化。在往复式摩擦磨损形式下,随着环境温度升高,两种工艺制备的Fe基非晶涂层的摩擦系数与磨损率先上升后下降。在室温条件下,Fe基非晶涂层以磨粒磨损和疲劳磨损为主,随着温度升高,两种磨损失效形式加剧的同时氧化磨损倾向增大,摩擦系数和磨损率均升高,而400℃时,涂层表面快速生成的连续氧化膜有效降低了涂层磨损,氧化磨损和疲劳磨损占主导,摩擦系数与磨损率显着下降。During the last few decades,Fe-based amorphous alloys had attracted much interest owing to their high strength and hardness,excellent soft magnetic properties,superior wear and corrosion resistance,relatively low material cost,and other advantages that allow the application scope of these alloys to be substantially extended.However,Fe-based amorphous alloys were usually fabricated in the form of ribbons and rods owing to the limitation of glass forming ability(GFA)and their intrinsic brittleness,which significantly limited the range of possible applications.To avoid these disadvantages,the route of spraying amorphous coatings had been recognized as an attractive and effective way,and was extremely viable candidates as surface protective coatings for applications in adverse environmental conditions involving high wear and corrosion,such as in power stations,and ships.Although the previous works have demonstrated that Fe-based amorphous coatings show high hardness as well as good wear resistance at room temperature,the information concerning the wear behavior and related wear mechanism of Fe-based amorphous coatings at relatively high temperature was relatively limited.Here,the Fe_(57)Cr_(15)Nb_(4)B_(20)Si_(4) amorphous coatings were designed and deposited by commercial high velocity oxygen fuel(HVOF)and atmospheric plasma spraying(APS)technologies with varied parameters onto AISI 4032 aluminum alloy,respectively,denoted as A1,A2,A3,H1,H2,and H3 coating.X-ray diffraction(XRD)and differential scanning calorimeter(DSC)were applied to clarify the phase structure and the amorphous nature.Scanning electron microscopy(SEM),energy dispersive spectroscopy(EDS)and transmission electron microscopy(TEM)were employed to identify the morphology,microstructure,porosity,and elements distribution of the as-sprayed coatings.Microhardness measurement and mechanical testing machine were adopted to detect the hardness and bonding strength of the coatings.The dry sliding wear tests were conducted using a ball-on-plate mode with the cou

关 键 词：Fe基非晶涂层 超音速火焰喷涂(HVOF) 大气等离子喷涂(APS) 微观组织结构 摩擦磨损 

分 类 号：TG174[金属学及工艺—金属表面处理]