物理悬浮破碎与化学插层溶胶-凝胶相结合制备纳米ZrO_2结构陶瓷涂层研究

采用物理悬浮破碎与化学插层溶胶-凝胶相结合的方法,通过低温成膜制备出纳米ZrO2结构陶瓷涂层。利用扫描电镜(SEM)和X射线衍射试验(XRD)方法表征了陶瓷涂层的微观结构和晶形。通过热震、耐磨蚀测试、附着力和硬度检测手段,检测其成膜的宏观性能。结果表明,低温成膜的结构陶瓷热震性能够承受800℃的温度,而纳米ZrO2大部分为四方相,陶瓷涂层有较好的致密度,涂层与基材结合良好,抛光后断面涂层厚度20μm左右,耐磨蚀能力超过普通陶瓷涂层,附着力达到0级,硬度为9H,具有很好的实用性。

Research on Preparation of Nano-ZrO2 Ceramics Coatings by Cooperation of Physical Floating Crushing and Chemical Intercalation Sol-Gel Method

In this paper, we use the method of physical suspension crushing along with sol-gel of chemical intercalation to prepare the nano-zireonia structural ceramics coating in low-temperature film-forming. The microstructure and crystalline shape of ceramics coating were observing by using the scanning electron microscopy （SEM） and X-ray diffraction （XRD） and testing the macroscopic properties of film-forming through thermal shock, wear-resistant corrosion properties, adhesion and hardness testing. The results showed that the structural ceramics of low-temperature film-forming can withstand 800 ℃ and most of nano-zirconia are tetragonal phase and the coatings has a better compact density, macroscopic properties, the coatings corrosion resistance is surpass the common ceramic coating. The coating＇s adhesion reach the 0 level and hardness is 9H, this nano-zirconia structural ceramics coating will have good practicability.