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hydrothermal recrystallization
相关语句
  水热重结晶
     Study on Hydrothermal Recrystallization Method for Synthesis of Tetragonally Structured Ba_(0.9)Ca_(0.1)TiO_3 Nanocrystals
     水热重结晶法制备四方相纳米Ba_(0.9)Ca_(0.1)TiO_3晶体的研究
短句来源
     A novel hydrothermal recrystallization route has been developed to produce tetragonal Ba0.9Ca0.1TiO3 nanocrystals.
     采用水热重结晶法对低温液相法制备的Ba0.9Ca0.1TiO3(B0.9C0.1T)浆料进行220℃,3h的水热处理,成功制备了四方相B0.9C0.1T纳米粉体.
短句来源
     Synthesis of Hydroxyapatite Nanorods by Hydrothermal Recrystallization Method
     水热重结晶法制备羟基磷灰石纳米棒
短句来源
  “hydrothermal recrystallization”译为未确定词的双语例句
     Hydroxyapatite nanorods were prepared by hydrothermal recrystallization method using Ca(NO3)2 and (NH4)2HPO4 as raw materials.
     本文以Ca(NO3)2和(NH4)2HPO4为原料,采用重结晶法,在水热条件下制备了羟基磷灰石(HA)纳米棒;
短句来源
  相似匹配句对
     Synthesis of Hydroxyapatite Nanorods by Hydrothermal Recrystallization Method
     水热重结晶法制备羟基磷灰石纳米棒
短句来源
     ON HYDROTHERMAL ROCK
     关于热液岩
短句来源
     RECRYSTALLIZATION '90
     金属材料再结晶国际会议
短句来源
     Hydrothermal Eruption
     水热爆炸
短句来源
     As for the recrystallization models,J.
     对于再结晶模型,针对所设定的变形条件,得出可用于计算再结晶的模型有J.
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  hydrothermal recrystallization
Hydrothermal recrystallization and transformation of tridymite
      
Single crystals of C-Na2Si2O5 have been synthesized from the hydrothermal recrystallization of a glass.
      


A novel hydrothermal recrystallization route has been developed to produce tetragonal Ba0.9Ca0.1TiO3 nanocrystals. The obtained powders were analyzed by TEM, XRD, Raman spectra, FTIR, TG and dielectric property measurements, and showed much less hydroxyl lattice defects, higher purity and bet- ter crystallinity than those prepared by low-temperature aqueous synthesis (LTAS) method. The hydroxyl lattice defect was key factor to influence the phase transition from paraelectric cubic to ferroelectric tetrago-...

A novel hydrothermal recrystallization route has been developed to produce tetragonal Ba0.9Ca0.1TiO3 nanocrystals. The obtained powders were analyzed by TEM, XRD, Raman spectra, FTIR, TG and dielectric property measurements, and showed much less hydroxyl lattice defects, higher purity and bet- ter crystallinity than those prepared by low-temperature aqueous synthesis (LTAS) method. The hydroxyl lattice defect was key factor to influence the phase transition from paraelectric cubic to ferroelectric tetrago- nal structure.

采用水热重结晶法对低温液相法制备的Ba0.9Ca0.1TiO3(B0.9C0.1T)浆料进行220℃,3h的水热处理,成功制备了四方相B0.9C0.1T纳米粉体.并对水热重结晶和未水热处理的两种粉体进行了TEM,XRD,Raman,FT-IR,TG和介电性能的表征.研究表明,经水热重结晶后的B0.9C0.1T粉体体系发生从顺电立方相向铁电四方相的转变,羟基缺陷以及CO32-杂质显著减少,粉体形貌由外边缘毛躁的球形转变为四边形.并发现羟基缺陷的减少是影响体系相转变的关键因素.

Hydroxyapatite nanorods were prepared by hydrothermal recrystallization method using Ca(NO3)2 and (NH4)2HPO4 as raw materials. XRD, TEM, HRTEM and FTIR were used to characterize the hydroxyapatite nanorods. The effect of pH value, crystallization time were studied on the compositions and structures of hydroxyapatite nanorods. The best aspect ratio of ca. 28 could be obtained for the hydroxyapatite nanorods prepared by hydrothermal heat-treatment at 180 ℃ and recrystallization of the room temperature...

Hydroxyapatite nanorods were prepared by hydrothermal recrystallization method using Ca(NO3)2 and (NH4)2HPO4 as raw materials. XRD, TEM, HRTEM and FTIR were used to characterize the hydroxyapatite nanorods. The effect of pH value, crystallization time were studied on the compositions and structures of hydroxyapatite nanorods. The best aspect ratio of ca. 28 could be obtained for the hydroxyapatite nanorods prepared by hydrothermal heat-treatment at 180 ℃ and recrystallization of the room temperature mixture of the suspension at pH value 7.5 and the clear solution of pH value of 10.5. With different pH values of clear solution, as monomer concentration (chemical potential) changed, the aspect ratio of hydroxyapatite nanorods were different; when crystallization time elongated, the aspect ratio of hydroxyapatite nanorods was increased first, then decreased.

本文以Ca(NO3)2和(NH4)2HPO4为原料,采用重结晶法,在水热条件下制备了羟基磷灰石(HA)纳米棒;利用X-射线衍射(XRD)、透射电镜(TEM)、高分辨透射电镜(HRTEM)、红外光谱(FTIR)等分析测试手段,研究了pH值和晶化时间对HA组成和结构的影响。实验结果表明,室温混合pH值为7.5的沉淀物和pH值为10.5的清液,于180℃下水热处理10h重结晶制得的HA纳米棒的平均长径比最长(约为28);采用不同pH值的清液,体系的单体浓度(即化学势)改变时,得到的HA纳米棒的长径比不同;随着晶化时间延长,纳米棒的长径比先增大后减小。

 
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