金属基体表面处理对ZSM-5分子筛膜原位生长及其结合强度的影响  

Influence of Surface Modification of Metallic Substrate on In-Situ Growth and Adhesion Strength of ZSM-5 Films

作　　者：袁方[1] 厉刚[1] 胡申林 

机构地区：[1]浙江大学化学系,浙江杭州310027 [2]高超声速冲压发动机技术重点实验室,北京100074

出　　处：《石油学报（石油加工）》2014年第6期976-983,共8页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(50976103)资助

摘　　要：考察了镍合金基体表面处理对ZSM-5分子筛膜原位生长及其结合强度的影响,采用纳米压入法测量了ZSM-5分子筛膜的力学特性,采用热冲击法和拉伸法评价了分子筛膜与基体之间的结合强度。结果表明,ZSM-5分子筛膜的硬度和弹性模量分别为5.6GPa和50.6GPa;基体经高温氧化(950℃)后,原位生长的ZSM-5分子筛晶体数量减少,分子筛膜的抗热冲击能力提高,界面结合强度降低;基体经盐酸或硝酸处理后,原位生长的ZSM-5分子筛晶体数量与酸溶液浓度有关,分子筛膜与基体之间的结合强度增大。Influence of surface modification of nickel alloy substrate was studied on in-situ growth and adhesion strength of ZSM-5films.The mechanical properties of ZSM-5film were measured by using nano-indentation test,and the interfacial adhesion strength between zeolite film and substrate was evaluated by using thermal shock test and pull-off test.The hardness and elastic modulus of ZSM-5film were 5.6GPa and 50.6GPa,respectively.The oxidation of substrate at 950℃reduced the number of ZSM-5zeolite crystals grown on the substrate,which led to the enhancement of the capability against thermal shock and the weakening of the adhesion strength of ZSM-5film.For substrates treated in HCl or HNO3 solution,the number of ZSM-5crystals grown on the substrate depended on the solution concentration and the adhesion strength between zeolite film and substrate was improved.

关 键 词：ZSM-5 分子筛膜 界面结合强度 力学特性 表面处理 

分 类 号：O643.3[理学—物理化学]