摘要
采用粉煤灰为主要原料,在Q235钢基体上制备了热化学反应型复合涂层,分别利用X射线衍射仪(XRD)和扫描电镜(SEM)对涂层进行物相分析和截面形貌观察,并模拟了复合涂层在石油介质中的腐蚀磨损行为。XRD分析结果表明,有Na2B4O7、TiB2、NaB15和Al6O13Si2等新相生成,获得了玻璃/陶瓷复合涂层;由SEM观察可知,界面处结合紧密,涂层致密且孔隙率低;热震实验结果表明,粉煤灰复合涂层热震次数达50次以上,结合强度良好;石油介质腐蚀磨损实验表明,在200r/min、300r/min和400r/min的条件下,复合涂层的抗腐蚀磨损性能分别为基体的2.74倍、2.78倍和1.80倍。
The present paper concentrates on applications of fly ash in preparation of composite coatings by thermal-chemical reaction method. Phase composition and interface morphology of the coatings were analysed by X-ray diffraction （XRD） and scanning electron microscopy （SEM）, respectively. Corrosive wear performance in oil medium was tested. XRD analysis indicates that Naz B4 O7, TiB2, NaB15 and A16 O13 Si2 were generated, and glass-ceramic com- posite coatings were obtained. SEM observation indicates that the composite coatings exihibited excellent properties in interface combination and porosity. Thermal shock test results show that thermal shock of fly ash composite coatings which had good bond strength was more than 50 times. Corrosive wear tests show that the corrosive wear performance of composite coatings increased to 2. 74 times, 2. 78 times and 1.80 times of the subtrate＇s, respectively, at the speed of 200 r/min, 300 r/rain and 400 r/mira
出处
《材料导报》
EI
CAS
CSCD
北大核心
2013年第16期127-130,共4页
Materials Reports
关键词
粉煤灰
复合涂层
石油介质
腐蚀磨损
fly ash, composite coating, oil medium, corrosive wear
