文档介绍：南京理工大学硕士学位论文电热爆炸喷涂钼涂层的制备及性能研究姓名:刘加健申请学位级别:硕士专业:材料学指导教师:樊新民 201203 硕士论文电热爆炸喷涂钼涂层的制备及性能研究摘要利用电热爆炸喷涂的方法,在铝合金和钢基体上分别制备了钼涂层。用扫描电子显微镜(SEM)、划痕仪、显微硬度计、表面粗糙度仪、微磨损试验机等表征了钼涂层性能。借助正交试验方法分析了钼涂层制备中各工艺参数对涂层质量的影响,确定了最佳工艺参数,并研究完成了一种制备大直径圆筒试样涂层的新方法。通过控制电热爆炸喷涂时的距离、喷涂电压以及喷涂次数三个参数控制喷涂质量, 利用正交试验方法综合设计试验并对比试验结果。同时参考在不同的基体上(铝合金、钢)涂层的质量情况,研究电热爆炸喷涂钼涂层的最优工艺参数及其结合机理。通过对钢管试样涂层均匀性的研究,证实了所设计新试验方法的可靠性。结果表明:用电热爆炸喷涂方法制备的钼涂层均匀致密,孔隙率低;涂层与基体形成冶金结合,结合强度高;,%, 耐磨性大幅增加。电爆炸喷涂的工艺参数中,对涂层质量和结合力影响最大的是喷涂距离,其次是喷涂次数,影响最小的是喷涂电压。通过对涂层厚度的变化规律的研究,实现了利用新的试验方案对钢管的进行喷涂, 所制备的涂层在各个位置厚度均匀,涂层致密,孔隙率低,电热爆炸喷涂对基体的影响不大。关键词:电热爆炸喷涂,钼涂层,结合力, 耐磨性 Abstract Molybdenum coating were preparedbyelectro-t11emal explosion Spray on aluminum alloy 【IIl coating properties were studiedby SEM,scratch tester, microhardness tester,surfIaceroughness tester a11dmicr0-wear Ⅱ.ough me method ofonhogonal experilIleIltaldesign,t11erelationsllip ofprocess parameterS wllich a艉ct mecoatingqualities are a11alyzed a11dtllebeStprocesspar锄eters are detemlined. IIlthisp印er'the electricexplosion rolled by spray voltage,spray method isusedinboth tothe quali够of thecoating (aIumin吼,steel),the spraying process parameterS bination ofmech撕sms areresearched. The resultsshow that,molybdemun coating isunifo珊,pact andlow porosi坝Metallurgical be帆een thecoating ofmolybdemlIll coating aStllesubstrate,wtlile thevolume %, which诵U increaSet11ealuminum a110y 、Ⅳ theprocess parameters wKch afrect t11ecoatingquality arldbinding force,t11e distance ofspray afrects moSt,t|1en is thetimesofspraying,the leastis tllesprayV01tage. According t0theresearchofthecoating thicknessVariation,Mob南denum coating were prepared by anew testingprogr锄s coating is inuous, compact atld10wporosi吼a11delectro—me咖al explosionspraying haS