燒結時的生長 的英文怎麼說
中文拼音 [shāojiēshídeshēngzhǎng]
燒結時的生長
英文
growth during the sintering- 燒 : Ⅰ動詞1 (使東西著火) burn 2 (加熱或接觸某些化學藥品、放射性物質等使物體起變化) cook; bake; hea...
- 結 : 結動詞(長出果實或種子) bear (fruit); form (seed)
- 時 : shí]Ⅰ名1 (比較長的一段時間)time; times; days:當時at that time; in those days; 古時 ancient tim...
- 的 : 4次方是 The fourth power of 2 is direction
- 生 : Ⅰ動詞1 (生育; 生殖) give birth to; bear 2 (出生) be born 3 (生長) grow 4 (生存; 活) live;...
- 長 : 長Ⅰ形容詞1 (年紀較大) older; elder; senior 2 (排行最大) eldest; oldest Ⅱ名詞(領導人) chief;...
- 生長 : grow; grow up; ascent; merisis; build up; auxesis; increment; overgrowth; gain; burgeon; bourgeon...
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The influence of nano - al2o3 on the sintering and the properties of the si3n4 ceramics was researched in this paper. the samples with different amount of nano - al2o3 were obtained by using pressureless sintering at 1600, 1650, 1700 in the nitrogen atmosphere. the microstructure and the composition of the ceramics were determined by the means of x - ray, sem, micro - hardness meter etc. it is show that the sisty ceramics can be densified at 1650c to % percent of the theory density through the addition of nano - al2o3 ( the value could be 90 percent by other technique ). the crystalline growth of the cylindrical - si3n4 and the ratio of its longitude to its diameter are increased with the addition of nano - al2o3. a uniform microstructure and an fined crystal as well as more sialon phases can be obtained in the si3n4 ceramics through the addition of that
實驗結果表明:在碳管爐中、氮氣保護下進行燒結,添加劑為納米al _ 2o _ 3粉末時,由於納米粉末的高活性、高燒結驅動力,在1650就可使si _ 3n _ 4完全地燒結,並使其緻密度可達理論密度的96以上(比其它工藝高6左右) ;同時,納米al _ 2o _ 3地加入大大促進了長柱狀? si _ 3n _ 4的生長和發育及柱狀晶長徑比的提高,使微觀結構均勻、細化,形成了更多力學性能優異的固體? sialon相,減少了不利於陶瓷材料性能的晶間玻璃相,凈化了晶界。The mix is produced with high quality sintered magnesite from liaoning as main raw materials, and is processed by matrix strengthening, classifying and proportioning reasonably. it has good performance of high adhesivity, a bit rebound and long service life. each gunning to the large size converter can withstand 6 - 10 heats
我公司生產的鎂質噴補料採用遼寧優質燒結鎂砂為主要原料,強化基質,合理級配、噴補時具有附著率高、回彈小、使用壽命長的優點,在大型轉爐上一次噴補使用壽命一般在6 - 10爐。By the increasing of temperature, liyco3 - xo4 was further changed into licoo2 and lixco1 - xo, and then licoo2 formed by the reaction of lixco1 - xo with li2o. the reaction that produces licoo2 is almost completely done at 700, although some remaining li2o and li2co3 present as a partially amorphous film dispersed on the surface of licoo2, which can accelerate the growth of licoo2 crystallites. however, when temperature is higher than 850, some of licoo2 begin to decompose into the solid solution phase of liyco2 - yo2 and lixco1 - xo, and damaged its own crystal structure
制備licoo _ 2的合成反應中licoo _ 2的微結構不斷發生變化,隨著焙燒溫度升高, co _ 3o _ 4晶粒逐漸減小, licoo _ 2晶粒和顆粒逐漸長大,晶格內部缺陷減少, licoo _ 2晶格趨于完整,在焙燒溫度為850時licoo _ 2晶粒達到最大值;焙燒溫度低於700 ,晶胞參數a隨著焙燒溫度上升而減小,晶胞參數c隨著焙燒溫度上升而增大;而高於700則晶胞參數基本保持不變。Changing the grading of sic particles not only affects the strength and pile density, but also modifies the phase compositions and microstructure of the material. with the reducing of sic particles, the strength of the material increases obviously. the nitrification scheme has the greatest influence on phase compositions and microstructure " of si3n4 ( si2on2 ) - sic, after two continuous nitrification reacting peak and short - time high - temperature treating, the best properties can be obtained ; and the residual strength of the composite is much higher after the thermal shock resistance test, which shows that the material possesses excellent thermal shock resistance
本論文較全面地探討促進強度和顯微結構良好的si _ 3n _ 4 ( si _ 2on _ 2 )結合相的實驗條件,實驗數據顯示:引入適量的燒結助劑能夠促進si _ 3n _ 4 ( si _ 2on _ 2 )的生成和晶粒的長大,而過量時,其促進作用反而下降;隨著si粉加入量增加,生成的結合相明顯增多,復合材料的性能顯著提高;改變sic顆粒級配不僅影響復合材料的強度與堆積密度,而且對復合材料的物相與顯微結構也有影響,隨著顆粒逐漸細化,材料的強度有較大的提高;對復合材料的強度、物相與顯微結構影響最大的是氮化制度,經過兩個氮化高峰連續的反應和短時間的高溫后處理得到的復合材料性能最好;通過抗熱震性能實驗后復合材料的殘余強度較高,顯示出較好的抗熱震性能。It is concluded that optimum calcined temperature is 900 with x < 0. 06 and 950 with x 0. 06. liquid phase is indispensable in the sinter procession. it contributes to the growth of the crystalline grain and the density
研究表明:當x 0 . 06時,適宜的預合成溫度應為900 ,當x 0 . 06時,適宜的預合成溫度應為950 ;樣品的燒結必須有液相的存在,適量的液相有助於晶粒的生長和材料的緻密化,但液相過多將降低壓電性能。Moreover, the sio2 / tio2 composite thin film showed the lowest pl intensity due to a decrease in the recombination rate of photo - generated electrons and holes under uv light irradiation, which further confirmed the film with the highest photocatalytic activity at 700 c. when the calcination temperature was higher than 700 c, the decrease in photocatalytic activity was due to the formation of rutile and the sintering and growth of tio2 crystallites resulting in the decrease of surface area
同時,此時sio _ 2 / tio _ 2復合薄膜的熒光光譜顯示最低的熒光強度,這表明此時薄膜中的光生電子和空穴的復合速率最低,因而更有利於物質的光催化降解。當熱處理溫度高於700時,武漢理工大學碩士學位論文薄膜的光催化活性下降,這是由於薄膜中晶相二氧化欽的燒結和成長導致樣品的表面積下降以及金紅石相的形成。分享友人