annealing at 800 C under a nitrogen atmosphere, a yellow-colored
powder was obtained as a B-N-O intermediate product, which might
have the formula B4N3O2H [21a]. The yellow powder was further cal-
cined at 600 C in air for 2 h to give a white B-N-O product containing
more oxygen. The as-prepared B-N-O precursor was put into a big
graphite crucible. A small BN crucible containing AlCl3 was placed
above this crucible. The components were enclosed in a graphite sus-
ceptor and heated in an induction furnace. The furnace was evacuated
and introduced into a pure Ar gas flow. The furnace was heated step
by step. When the temperature was about 950 C the gas flow was
switched to pure NH3/N2 (N2 100 mL min±1, NH3 200 mL min±1).
After that the temperature was increased to, and maintained at,
1200 C for about 1.2 h. The temperature was then increased further.
The position of the big graphite crucible containing the B-N-O precur-
sor was adjusted to ensure that the B-N-O precursor was heated at
1600 C. The atmosphere was a N2/NH3 flow with the same rate as in
the first stage. After about an hour coaxial tubular single-crystalline
cubic-AlN nanotubes with a BN coating were obtained. The products
were examined on an X-ray diffractometer (RINT 2200HF) and a
high-resolution transmission field emission electron microscope
(HRTEM) (JEM-3000F) attached to an X-ray energy dispersive spec-
trometer (EDS).
化工专业英语课文翻译是什么?
化工专业英语课文翻译如下:Although the use of chemicals dates back to theancient civilizations,the evolution of what we know as the modern chemical industry started much more recently.尽管化学品的使用可以追溯到古代文明时代,我们所谓的现代化学工业的发展却是非常近代(才开始的)。It may be...
化工专业英语翻译
epichloromethylthiirance 表氯甲基硫杂环丙烷;表氯甲基硫杂丙环;表氯甲基环硫乙烷;CH2-CH-CH2-Cl |_S_| epi- 表- chloro- 氯代-,氯(基)-,Cl-,methyl 甲基,CH3- thiirance : 硫杂环丙烷;硫杂丙环、环硫乙烷;ethylene sulfide === 硫杂环丙烷;硫杂丙环、环硫乙烷;thiirane;ethylen...
化工专业英语求翻译
interest because of their potential applications, which range 的兴趣,因为其潜在的应用,其范围 from targeted drug delivery to advanced functional materi- 靶向给药的先进功能材料—als.[1,2] Because of their hollow core structure, such polymeric ALS。[ 1,2 ]由于他们的空心结构,这样的聚...
化工专业的英语翻译。
应用的发展。显然发现了新的应用或使用的产品可以增加或延长其profitability.Not不仅会创造更多的收入,但由此产生的增加生产规模,可导致较低的单位成本和提高profit.An的例子是聚氯乙烯,其用途包括早期记录和塑料raincoats.Applications其中包括后来的塑料袋,特别是工程使用的管道和guttering 。重点已放在一个...
关于化工的专业英语,谁帮忙翻译一下?
Is not thick, not deeply to 2 #standard fluids Viscosity 40 (m□O\/s): 37 ~ 45 Mean molecular weight: 380 ~ 420 PH value: 4 ~ 7 glycol or diglycol: <= 0.25 Burning residual (%): <= 0.2 Hoevillite (ppm): <= 3 Heavy metal (ppm): <= 5 Relative density:...
英语翻译 化工专业 谢谢
做为缓凝型砼减水剂、Delaying water reducing agent 耐火材料粘结剂、fireproof cementing 陶瓷增强剂、ceram enhancer 炭黑、black pigment 矿粉、breeze 饲料造粒剂、feedstuff grain building agent 农药加工助剂, farm insecticide machining agent 电解液 electrolyte 填充剂 bulking agent 木质素磺酸钙 lignin...
化工专业英语翻译二
3.2. Segregation index 3.2 偏析指数 During the Reynolds number range investigated herein (66–1,060), the 7uid 7ow at No. 0 should be in laminar 7ow regime. At a Reynolds number of 66, corresponding to low-Reynolds number, purely shear 7ow, the segregation index is ...
metallic character 化学化工专业英语整篇翻译
Lesson 2 Metallic Character 金属性 Metals are electropositive and have a tendency to loss electrons, if supplied with energy: M→M++e. 金属具有电正性,即在具有足够能量的情况下,趋向于失去电子:M→M++e。The stronger this tendency, the more electropositive and more metallic an ...
求:化工专业英语课中的课文求翻译
虽然仍需要做大量的工作。或气体吸收,吸收是一个单元操作用于化工分离气体清洗或擦拭与合适的液体气体混合物。一个或多个组分的气体混合物会解散或被吸收的液体,因此可以从混合物中删除。在一些系统中,这种气体成分形成一个物理解决方案与液体或溶剂,而在其他情况下,它与液体化学反应。
化工英语专业翻译
,However,Solvent Polyurethane still have many shortcomings,such as deficient gloss film,slower film formation,weak in water proof and weather resistance,fancy price and so on.Hence,some proper modification need to be applied to Aqueous Polyurethane to improve its comprehensive properties ...