求求哪个英语达人,帮我翻译一下这个摘要,我用软件全输进去,导师让我全部重写。谢谢了 20
摘要:论文综述了铈基抛光粉的制备过程和结果分析,选用了湿固相机械球磨法作为实验方法,并尝试添加NH4F作为掺杂物来研究其对抛光粉形貌、粒径等的影响,运用了SEM和XRD对...
摘要:论文综述了铈基抛光粉的制备过程和结果分析,选用了湿固相机械球磨法作为实验方法,并尝试添加NH4F作为掺杂物来研究其对抛光粉形貌、粒径等的影响,运用了SEM和XRD对试样的形貌和粒径进行了表征和分析。对于NH4F掺杂量进行了对比,得出了Ce:F=1:0.4为最佳添加量,制得的抛光粉为球形,粒径在30nm左右,纯度满足纯度(REO)≥92%。在确定了抛光粉的形貌后,还对球磨时间进行了分析,得出了在2h反应完全的结论。因球磨后得到的前驱体要进行热分解,故实验对前驱体的分解温度进行了研究,在实验后得到了在400 ℃时前驱体是分解完全的,随着温度的上升,抛光粉粒径开始变大。实验还进行了添加各种表面活性剂的实验,得出的结果显示PEG4000、NaCl等对改善粉体的分散性是有益的。
关键词:CeO2抛光粉; 湿固相机械球磨法; 热分解温度; 粒径; NH4F
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关键词:CeO2抛光粉; 湿固相机械球磨法; 热分解温度; 粒径; NH4F
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Abstract: in this paper, we reviewed the ceria based polishing powder preparation process and the result analysis, the selection of the wet solid phase mechanochemical method as the experimental method, and try to add NH4F as dopants to study the on the polishing powder morphology and particle diameter were investigated using SEM and XRD of sample morphology and particle size were characterized and analyzed. For the doping amount of NH4F were compared, obtained the Ce:F=1:0.4 for optimum adding amount, of polishing powder is spherical, particle size is about 30nm and purity can meet the purity (REO) is equal to or more than 92%. After determining the morphology of the polishing powder, the milling time is also analyzed, and the conclusion of the reaction of the 2H is concluded.. Because obtained after ball milling precursor to thermal decomposition, so the experiment of the precursor decomposition temperature was studied. After the experiment has been in 400 DEG C when the precursor is decomposed completely, with the rise of temperature, polishing powder particle trail began change. Experiments were carried out to add a variety of surfactants, and the results show that the dispersion of PEG4000 and NaCl is beneficial for improving the dispersion of the powders..
Keywords: CeO2 polishing powder; wet solid mechanical milling; thermal decomposition temperature; particle size; NH4F
Keywords: CeO2 polishing powder; wet solid mechanical milling; thermal decomposition temperature; particle size; NH4F
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