Alumina washcoat 涂层Al
The experimental results showed that sol-gel method can ensure firm adhesion of the alumina washcoat to the support,and adjustment of the sol viscosity was achieved with the use of urea,resulting in alumina washcoat with large suface area and high loading.
铝溶胶中加入尿素可以有效调整溶胶的粘度,从而能够获得负载量大,比表面积高的氧化铝涂层。
参考来源 - 蜂窝陶瓷载体上氧化铝涂层的制备Since thermal expansion coefficient of the metallic support is different from the ceramic oxide washcoat, the adhesion of washcoat is poor which leads to the washcoat chap and flake away.
金属载体与陶瓷涂层材料的热膨胀系数相差较大,使得载体与涂层之间的结合强度较差,涂层易皲裂、剥落。
参考来源 - 蜂窝状金属丝网载体涂层制备及催化还原NO·2,447,543篇论文数据,部分数据来源于NoteExpress
应用推荐