纳米SiO_2对火焰喷涂尼龙1010涂层力学性能的影响  

Mechanical Properties of Flame Sprayed Nylon-1010/Nanometer SiO_2 Composite Coating

作　　者：李亚东[1] 白宝丰[1] 马亿珠[1] 曹少魁[2] 吴志申[3] 

机构地区：[1]郑州轻工业学院材料与化工学院,河南郑州450002 [2]郑州大学材料工程学院,河南郑州450052 [3]河南大学特种功能材料重点实验室,河南开封475001

出　　处：《材料保护》2006年第6期15-17,共3页Materials Protection

基　　金：河南省自然科学基金资助(0311022400);河南省科技攻关(0524250016);河南省高校杰出科研人才创新工程资助项目(2006KYCX007);河南省教育厅科技攻关资助项目(2003530293)

摘　　要：为了探讨纳米SiO2对火焰喷涂尼龙1010(PA1010)涂层力学及热性能的影响,利用电子拉力机和示差扫描量热仪(DSC)对火焰喷涂PA1010/纳米SiO2复合涂层的力学性能及热性能等进行了测试。结果表明:当复合涂层配比为m(PA1010):m(n-SiO2)=100.0:1.5时,其综合性能较佳,涂层自拉伸强度为69.8 MPa,涂层与基体的结合强度为28.9 MPa;纳米SiO2有明显的异质成核作用,使复合涂层的过冷度由27.0℃下降为24.0℃;纳米SiO2能够显著提高涂层的力学性能,有助于提高复合涂层的结晶速率,具有明显的成核作用。The mechanical and thermal properties of flame sprayed nylon-1010/nanometer SiO_(2)(coded as n-SiO_(2)) composite coatings were studied using a universal electronic pulling-force meter and a differential scanning calorimeter.The results showed that the composite coating composed of 100.0%(mass fraction) PA-1010 and 1.5% n-SiO_(2) had the best comprehensive properties,with the tensile strength and adhesion to the substrate to be 69.8 MPa and 28.9 MPa,respectively.Moreover,the super-cooling limit of the composite coating decreased from 27.0 ℃(that of the coating without nanometer SiO_(2)) to 24.0 ℃.The reason lay in that n-SiO_(2) particulates as the heterogeneous nucleation cores in the composite coating were capable of speeding the crystallization process and considerably improving the mechanical properties of the coating as well.

关 键 词：火焰喷涂 尼龙1010/纳米SiO2复合涂层 力学性能 热性能 

分 类 号：TB383.1[一般工业技术—材料科学与工程] TG174.44[金属学及工艺—金属表面处理]