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浮云翳月新蟲 (初入文壇)
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[求助]
幫忙翻譯下面幾段話
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TiO2壓敏陶瓷是一種具有壓敏電壓低、非線性系數(shù)大,介電常數(shù)高等優(yōu)異電學(xué)行為的半導(dǎo)體功能材料。在低壓領(lǐng)域中,在過壓保護和消噪、抗浪涌等方面應(yīng)用日益廣泛。本文在對國內(nèi)外壓敏陶瓷研究的歷史、現(xiàn)狀及前景概述的基礎(chǔ)上,對摻雜Ta2O5的TiO2基陶瓷的壓敏特性進行了研究。 本設(shè)計采用固相燒結(jié)法制備了一系列樣品。主要研究了不同摻雜量的Ta2O5和不同溫度對壓敏材料的壓敏電壓和非線性系數(shù)等的影響,并進行了相關(guān)的比較分析。主要實驗工作及結(jié)果如下: (1)研究了Ta2O5摻雜量在0.01mol%--1.0mol%的范圍內(nèi)對TiO2基陶瓷的非線性伏-安特性及介電性能的影響。結(jié)果表明:隨著Ta2O5摻雜量的持續(xù)增加,樣品的非線性系數(shù)先增后減,其最大值為6,在Ta2O5的摻雜量為0.1 mol%附近時獲得;樣品介電常數(shù)(在1kHz頻率下測量)先減后增,其最小值在Ta2O5摻雜量在 0.1mol%附近獲得。 (2)研究了不同溫度對該樣品的壓敏特性的影響。研究結(jié)果表明:在1250℃~1400℃范圍內(nèi),隨著溫度的升高,壓敏電壓、非線性系數(shù)逐漸增加,在1350℃時,樣品具有最好的壓敏性(V1mA~ 6 ,α~ 6)。 |
鐵桿木蟲 (正式寫手)
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TiO2 varistor ceramics is a semiconductor functional material with excellent electrical behaviours such as low varistor voltage, large nonlinear coefficient and high dielectric constant. In low voltage field, it has found ever increasing applications in over voltage protection, noise reduction as well as surge suppression. This paper studies the varistor characteristics of TiO2 based ceramics doped with TA2O5, based on a review of the history, current status and future perspectives of varistor ceramics in China as well as abroad. In this design a series of samples are prepared using solid state sintering. The focus has been on the impact of Ta2O5, with different dopants, and different temperatures on the varistor voltage and nonlinear coefficient and comparisons are made accordingly. The main experimental work and results are as follows: 1. Impacts of Ta2O5 doped within a range of 0.01mol%--1.0mol% on the nonlinear V-A characteristics and dielectric properties of TiO2 varistor ceramics. The results demonstrate that with the gradual increase of Ta2O5 dopant, the nonlinear coefficient of the samples first increases and then decreases, with the maximum being 6 obtained when the Ta2O5 dopant is close to 0.1 mol%; sample dielectric constant (measured at 1kHz frequency) first decreases and then increases, with its minimum occurring when the Ta2O5 dopant is close to 0.1 mol%. 2. Impacts of different temperatures on the varistor characteristics of the samples. The study shows that within a range of 1250℃~1400℃, as the temperature rises, varistor voltage and nonlinear coefficient gradually increase and at 1350℃, the samples have the best pressure sensitivity (V1mA~ 6 ,α~ 6). 供參考 |

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