氮化

The small size particles produced during ferrovanadium sizing operation are formed into nitrided briquette so as to obtain nitrided ferrovanadium, The effect of ferroalloy size, pressure, nitriding temperature and nitniding time was studied on the nitrogen content of the product.

对高钒铁合金精整过程中产生的细颗粒物料进行压块渗氮，得到氮化钒铁产品，研究了合金粒度、压块压强、渗氮温度、渗氮时间对产品含氮量的影响。

A method for the preparation of silicon nitride powder by a direct nitridation process based on fluidization technology is described.

提出了一种基于流态化技术，利用硅粉直接氮化制备氮化硅粉的新工艺。

At low applied forces, the hardness of rhenium diboride is equivalent to cubic boron nitride, the second-hardest material known, Kaner said.

在低作用力下，二硼化铼的硬度与立方结构的氮化硼相等，而氮化硼是第二硬的材料。

It has raised great interests of research on interface of heterogenic material combination in resent years. In this research program, Al2O3, AlN and Si3N4 ceramics include Si samples had been surface metallized by pulsed high energy density plasma gun, and micro and macro behavior of interface between metallic film and substrate were studied in detail.

异质材料结合的界面研究是近年来材料研究的热点之一，本课题采用脉冲高能量密度等离子枪对氧化铝、氮化铝和氮化硅等纯陶瓷以及纯硅片材料基片表面进行金属化，进而对于金属膜/基底界面的微观和宏观行为进行了研究。

Xinquan HuTwo new chiral backbones R-- and S--2-amino-2"-hydroxy-4,4",6,6"-tetra methyl-1,1"-biphenyl were synthesized via nitration, diazotation/iodination, Ulhnann coupling, selective reduction, diazotation/hydrolysis, hydrogenation and resolution from 2,4-dimethyl-aniline in seven steps.

以2，4-二甲基苯胺为起始原料，经过硝化反应、重氮化碘代反应、Ullmann缩合反应、选择性双硝基单还原反应、重氮化水解反应、催化氢化反应和拆分，首次合成了--2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯和--2-氨基-2'-羟基-4，4'，6，6'-四甲基-1，1'-联苯两个对映体。

The nitrogen content in the product is affected by temperature, which is unfavorable in carbonthermic reduction and nitridation if it is over or below to 1420℃.

反应温度对产物的氮含量有重要影响，对于碳热还原氮化反应，过低或过高的温度都不利于反应进行，较适宜的温度为1420℃；而铝热还原氮化反应中，升温有利于提高反应速度，较适宜的温度为1460℃。

In the depth surpasses in 10 meter deep well nitrogenation oven technique of manufacture, applied the multi-link graduation to enter the ammonia active nitrogen atom weaken compensation method, caused the nitrided uniformity distinct enhancement.

在深度超过10米的深井氮化炉制造技术中，应用了多环分级进氨气活性氮原子衰减补偿法，使氮化均匀性明显提高。

The nitrides with high specific surface area from oxide precursor can be prepared through temperature-programmed reduction via topotactic reaction in ammonia or nitrogen under strict reduction conditions.

在基本不破坏氧化物前驱体晶体结构和严格的氮化条件下，氧化物前驱体通过程序升温氮化经由&局部规整反应&可以制备出高表面积的过渡金属氮化物。

At even higher temperature anneals, breakage of Si-H bonds and out-effusion of H through the SiNx:H layer may cause a collapse in the surface passivation at temperatures around 600°C, as seen from the apparently complete lack of H below the SiNx:H layer in the NRA measurements of these samples.

在更高的温度anneals ，破损泗H键及外积液的H透过氮化硅： H的层都可能引起崩溃，在表面钝化，在温度约为600 ° C时，从表面上完全缺乏的H低于氮化硅： H的层在NRA的测量这些样品。

The thickness and composition of the nitrided layer can be controlled by changing ion-nitriding parameters.

此外，改变温度及氮氢比等氮化参数可有效控制氮化层之成分与厚度。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。