鎢陰極 的英文怎麼說
中文拼音 [wūyīnjí]
鎢陰極
英文
tungsten cathode-
Usage : manufacture tungsten wire, frame of grid, elicit wire, bracket, unsag tungsten wire, mould rods in high temperature, eradiate cathode, electrodes, bracket of heating
用途：用於製造鎢絲柵極邊桿引出線支架不下垂鎢絲，高溫定型桿發射陰極電極加熱子支撐桿等。So re oxides has two form existence, one is concentrate on the matrix equiaxial crystal grain boundary as a micron particles and the other is distributed in matrix crystal dispersively as the nanometer particles compared the electron emission performance of mo - la2o3, mo - ; la2o3 - y2o3 and mo - la2c > 3 - sc2o3 cathode, the mo - la2o3 - sc2c > 3 cathode show excellent electron emission character
上述研究表明不論是在稀土?鉬陰極還是在稀土?鎢電極中，稀土氧化物的存在形式有兩種，一種是微米級的顆粒偏聚于晶界處，另外一種是彌散分佈於基體晶粒的納米小顆粒。A large number of attempt and painstaking experiment have been done in this paper according to existing project. we also do lots of chemical and electrochemical etching research in material of lab6, and find out three kind of methods to produce the field emitting cold cathode including reactive ion etching ( rie ) with oxygen, wet process etching and electrochemical etching. through produce some field emitting cold cathode single tip including lab6 field emitting cold cathode, molybdenum field emitting cold cathode, tungsten field emitting cold cathode, tungsten rhenium field emitting cold cathode, molybdenum covered with lab6 film field emitting cold cathode
而且，目前可借鑒的參考文獻較少，圍繞著前人做過的方案，本文做了大量工作，在已有文獻介紹的基礎上，結合原有的理論和實踐基礎，摸索出了包括高溫氧作用反應離子（ rie ）刻蝕法、濕法腐蝕法和電化學腐蝕法在內的三種制備工藝，運用電化學腐蝕工藝成功制備了單尖的六硼化鑭場發射冷陰極尖錐、鉬場發射冷陰極尖錐、鎢場發射冷陰極尖錐、鎢錸合金場發射冷陰極尖錐以及有六硼化鑭薄膜覆蓋的鉬場發射冷陰極尖錐。As a nondestructive technique to measure the inner fine structure of the cathode, the ict has the unique advantage. we discussed the emission mechanism of thermionic cathode, and tried to explain the excellent performance of mixed metal cathode by richardson formula and muller ' s computational model
4 ）就當前鋇鎢陰極發射機理的兩個主要理論模型作了自己的探討，並初探了鋇鎢陰極中鋇的供應機制及發射壽命預測的問題，而且用理查遜公式的推導和muller計算機模擬法解釋了混合基鋇鎢陰極的優良性能。This research has studied the microstructure of cathode materials systematically by the means of high resolution transmission electron microscopy and scanning electron microscopy, surveyed the electron emission performance of la2o3, - mo, la2o3 - y2o3 - mo, la2o3 - sc2c > 3 - mo cathode with the self - designed electron emission surveyor and analyzed the elements changing of the surface of mo - la2o3 - sc2c > 3 cathode in - situ. while it was heated to different temperature. at last, the relationship of the microstructure of cathode, diffusion of active matter and electron emission performances has been discussed
本研究採用高分辨掃描電鏡、透射電鏡對稀土鉬鎢陰極材料的顯微結構進行了系統研究；利用本課題研究組設計研製的電子發射測量儀對la2o3 - mo ， la2o3 - sc2o3 - mo ， la2o3 ? y2o3 - mo三種陰極（以下稱鑭?鉬陰極、鑭鈧?鉬陰極、鑭釔?鉬陰極）的發射性能進行了測量；利用經改造后的俄歇電子能譜儀「原位」分析了發射性能較好的鑭鈧鉬陰極在不同溫度下表面活性元素的變化情況。Hottest spot analysis of tungsten cathode
鎢絲陰極最熱點分析In this dissertation, eu2o3 - sc2o3, y2o3 - sc2o3 co - doped tungsten powders and impregnated cathodes related to these powders have been prepared by pressing, sintering and impregnating for the first time
本論文首次制備了復合稀土eu2o3 - sc2o3 、 y2o3 - sc2o3摻雜的鎢粉，通過粉末壓制、燒結和基體浸鹽的工藝制備了相應的復合稀土/氧化鈧-鎢基擴散陰極。Performance studies of a new style compacted barium - tungsten cathode
新型壓制鋇鎢陰極性能的研究With the development of high power microwave tube, the theoretical and experiment investigation of the high performance cathode have been conducted. the research work includes how to prepare the high performance cathode and the effect of the based metal on the cathode emission, the measurement of the inner and surface fine structures of the cathode, the discussion of emission mechanism of thermionic cathode. after a lot of experiment, we finally determined the cathode preparation with an excellent emission
為了適應大功率微波管的發展，本文展開了對高性能（大電流密度、長壽命）陰極的研究，研究工作包括陰極制備工藝、鋇鎢陰極基金屬對陰極發射性能影響、以及鋇鎢陰極基底內部結構無損檢測及表面形貌檢測、鋇鎢陰極發射機理探討及應用四個方面的實驗和理論的研究。Emission characteristics of newly developed barium tungsten cathode
新型鋇鎢陰極的發射性能研究分享友人