英语翻译annealing at 800 \x1eC under a nitrogen atmosphere,a yel

英语翻译
annealing at 800 \x1eC 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 \x1eC 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 \x1eC 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 \x1eC 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 \x1eC.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).

退火在800 ?C在氮气气氛下,一个黄色的色
得到的粉末作为BNO中间产品,这可能
具有下式B4N3O2H 〔21a〕 .黄色粉末是进一步校准
在600 cined下于空气中2小时,得到白色BNO含产物的
更多的氧气.所制备的英国国民（海外）前体投入一个大
石墨坩埚.含有氯化铝被放在一个小的BN坩埚
该坩埚以上.这些组件被封闭在石墨悬浮
受体,在感应炉中加热.然后将该炉抽空
引入一个纯Ar气流.将炉子加热步骤
一步.当温度为约950℃ C的气流量为
切换到：纯NH3/N2 （ N2 100毫升分钟±1 ,氨氮200毫升分钟±1） .
之后,使温度上升,并保持在
1200 C的约1.2小时.然后将温度进一步提高.
大石墨坩埚中的英国国民（海外）前体的位置
感器的调整,以确保BNO前驱体的混合物加热
C. 1600 ?的气氛是N2/NH3的流动具有相同的速度,如
的第一阶段.经过大约一个小时的同轴管状单结晶
立方氮化铝纳米管与一个BN涂层.该产品
上的X-射线衍射仪（ 2200HF RINT ）和检查
高分辨透射场致发射电子显微镜
（ HRTEM ） （ JEM - 3000F ）连接到的X射线能量色散规范
谱仪（ EDS ） .