鋁酸鹽結(jié)構(gòu)對陰極性能影響的初步探討
Study on the influence of aluminates structure on cathode characteristics
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摘要: 用XRD技術(shù)對浸漬Ba-W陰極所用的鋁酸鹽(6BaO:CaO:2Al2O3)結(jié)構(gòu)進(jìn)行了分析。結(jié)果表明俄羅斯和國內(nèi)某單位的鋁酸鹽峰位較復(fù)雜,結(jié)構(gòu)不單一。該文作者用新的配方,新的燒結(jié)方式生成了主峰為Ba5CaAl4O12的結(jié)構(gòu)單一的鋁酸鹽,且燒結(jié)溫度比傳統(tǒng)燒結(jié)溫度低200℃,單一結(jié)構(gòu)的鋁酸鹽具有浸漬溫度低、發(fā)射較好、性能穩(wěn)定、蒸發(fā)少等特點(diǎn),從而可望改善Ba-W陰極的性能。
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關(guān)鍵詞:
- 倫琴射線技術(shù)（XRD）; 鋁酸鹽; 浸漬溫度; 發(fā)射電流
Abstract: The structure of aluminates which are used for Ba-W cathode is analyzed by XRD technology. It has been shown that the aluminates produced by some companies in Russian and our country are very complicated. The main single structure (Ba5CaAl4O12) of the aluminates has been formed by a new firing technology and new prescription. Its firing temperature; is 200C lower than that of conventional method. The melting point of the aluminates is lower than that of the conventional one. The cathode impregnated with the new aluminateH has high and stable emission current and low evaporation, which can improve the characteristics of Ba-W cathode. -
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