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[求助]
高分子論文翻譯 求助
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The novel magnetic nanocomposites with the special stoichiometries of Ba0.34Sr0.34Cd0.16Zn0.16Fe12O19 (S1) and Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 (S2) were successfully synthesized by the self-assembly reflux procedure. EDTA was used as a complexing agent to prepare these magnetic ferrite nanoparticles with a uniform morphology. The excellent crystallinity of the samples was provided via the calcination planning at 450 and 850 C for 2 h. The prepared ferrite nanocomposites indicated the high saturation magnetization of 66.59 and 65.09 emu/g. In addition, the resulting products revealed excellent microwave absorbing properties at the frequency range of 8–12 GHz. The maximum reflection losses of 25 and 35 dB were measured for samples (S1) and (S2) after calcination at 850 C with an optimum thickness of 2.1 mm,respectively. The results showed that the increase of calcination temperature to 850 C improves the microwave absorbing properties of the prepared absorbers. These results can be due to establishment of the crystallinity of ferrite structure and arrangement of the particles in nanoscale with the average sizes of 43 and 38 nm, respectively. Therefore, these synthesized ferrite composites can be applied as a microwave absorber for EMI shielding. |
木蟲 (著名寫手)
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通過回流自組裝的方法,具有特別化學計量數(shù)的Ba0.34Sr0.34Cd0.16Zn0.16Fe12O19 (S1)和Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 (S2)兩種新穎磁性復合物被合成出來。EDTA作為絡合劑被用來制備具有均勻形貌的鐵酸鹽磁性納米粒子。通過在450度和850度煅燒兩個小時,我們獲得了具有非常高結晶度的樣品。 制備的鐵酸鹽納米復合物的飽和磁化率高達66.59 和 65.09 emu/g。此外,終產(chǎn)物對頻率在8–12 GHz的微波具有非常吸收性能,對于測試的S1和S2兩個樣品來說,他們的最大反射損耗為25 和35 dB 。 (after calcination at 850 C with an optimum thickness of 2.1 mm,respectively,這句話有問題,我嘗試翻譯)經(jīng)過850度的煅燒后,材料的優(yōu)化厚度為2.1毫米。結果顯示,當煅燒溫度升高到850度后,我們制備的吸波材料的微波吸收性能提高了,這可以歸因于鐵酸鹽結晶結構的形成和粒子在43納米和38納米這個納米尺度的重新排列。因此,合成的鐵酸鹽復合物可以被用作微波吸收劑來進行抗電磁干擾。 樓主不要忘記金幣啊 |
木蟲 (著名寫手)
|
通過回流自組裝的方法,具有特別化學計量數(shù)的Ba0.34Sr0.34Cd0.16Zn0.16Fe12O19 (S1)和Ba0.69Sr0.17Cd0.07Zn0.07Fe12O19 (S2)兩種新穎磁性復合物被合成出來。EDTA作為絡合劑被用來制備具有均勻形貌的鐵酸鹽磁性納米粒子。通過在450度和850度煅燒兩個小時,我們獲得了具有非常高結晶度的樣品。 制備的鐵酸鹽納米復合物的飽和磁化率高達66.59 和 65.09 emu/g。此外,終產(chǎn)物對頻率在8–12 GHz的微波具有非常吸收性能,對于測試的S1和S2兩個樣品來說,他們的最大反射損耗為25 和35 dB 。 (after calcination at 850 C with an optimum thickness of 2.1 mm,respectively,這句話有問題,我嘗試翻譯)經(jīng)過850度的煅燒后,材料的優(yōu)化厚度為2.1毫米。結果顯示,當煅燒溫度升高到850度后,我們制備的吸波材料的微波吸收性能提高了,這可以歸因于鐵酸鹽結晶結構的形成和粒子在43納米和38納米這個納米尺度的重新排列。因此,合成的鐵酸鹽復合物可以被用作微波吸收劑來進行抗電磁干擾。 樓主不要忘記金幣啊 |
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