爐子長度 的英文怎麼說
中文拼音 [lúzizhǎngdù]
爐子長度
英文
furnace length-
Furthermore, the growth and the study of self - organized quantum dots structures become more and more important recently, and the application of self - organization technique become wider and wider in this thesis, we address the theory of film growth and the growth technique firstly more, the ways and characteristics of surface detection are prescribed we mainly report the growth process, results and discuss of self - organized quantum dots structures in the a12o3 substrates by s - k mode using ecr - mocvd, in the espd - u device the growth art of ain epilayer which is the preliminary foundation of self - organized gan / ain quantum dots structures, including the substrate cleaning, nitridation, the growth of buffer and the growth of gan and ain epilayer, is discussed we deliberately compare the test result of rheed xrd and afm and achieved the optimalized condition of ain at last we have successfully realized the growth of ain which is much smooth and better crystal quality moreover, we grow the self - organized gan / ain quantum dots structure in s - k mode because the limits of the heater temperature, we can not grow the atom - smooth epilayer of ain until now so we could not grow better quantum dots which have small diameter and big density but the self - organized quantum dots structures with better quality will be realized successfully if the substrate temperature is increased the thesis study belong to my tutor subject of national nature science foundation ( 69976008 )
本論文主要論述了在espd - u裝置上，採用電子迴旋共振等離子體增強mocvd （ ecr - pamocvd ）方法，在藍寶石襯底上通過s - k模式自組裝生長gan aln量子點結構的生長工藝、結果及討論。而重點分析了自組裝生長量子點之前的aln外延層生長工藝，包括襯底清洗、氮化、緩沖層的生長和gan 、 aln外延層的生長；通過高能電子衍射、 x射線衍射和原子力顯微鏡測試，並且對這些測試結果進行了詳細的比較研究，得出了較優化的工藝條件，生長出了晶質較好、表面較平整的aln外延層；進而採用s - k模式自組裝生長了gan aln量子點結構。由於實驗裝置加熱爐溫度的限制，我們沒有能夠生長出原子級平滑的aln外延層表面，因而沒能夠生長出密度比較大和直徑比較小的量子點。Abstract : owing to the defects in high cost and short life of the copper contact shoes on electric arc furnace, it was redesigned and replaced with graphite contact shoes. by using it to a 6. 3mva electric arc furnace, result shows that the operating life is longer and the furnace hot ? down time is decreased obviously. operating cost reduced greately
文摘:針對電爐銅頭電瓦成本高、壽命短的缺陷，對其重新設計改造，以石墨導電瓦代替銅頭導電瓦，並應用在6 . 3mva電爐上，結果其使用壽命長，爐子熱停次數顯著減少，生產成本大幅度降低。In this thesis, we will focus on the nanotube structure and synthesis, including disorder multi - wall carbon nanotube, aligned multi - wall carbon nanotube array, cnx nanotube, and bcn nanotube. the effects of growth parameters, which provide scientific basis for pyrolysis of carbon nanotube, were studied systematically. furthermore, layered aligned multi - wall carbon nanotube arrays separate by catalyst particles were synthesized on the surrounding of reaction quartz tube by injection of xylene - ferrocene for the first time, which provided a chance for the accurate measure and potential use of carbon nanotubes
在對碳納米管制備的基礎上，全面系統地研究了碳納米管的影響因素，對熱解法制備碳納米管確定了可供參考的制備工藝參數，在些基礎上，首次成功地直接在反應爐內石英管壁上直接生長分層生長的定向碳納米管，為納米管的性質的測量提供了一定的基礎，而且為定向碳納米管在微電子學領域的應用提供可能性，能成功地實現定向納米管的固定長度生長。
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