查询词典 nitrogenation

The microstructures, phase compositions, magnetic properties of Sm2F17-type alloys and their nitrides have been studied by means of arc-melting, HDDR and nitrogenation processes.

通过采用电弧炉冶炼、HDDR及氮化的方法，对Sm2Fe17型合金及其氮化物的组织形貌、物相及磁性能进行研究发现，多补偿添加25%钐可使Sm2Fe17型合金退火后的α-Fe含量小于2%。

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。

Then the nitrogenation conditions from acicular γ-Fe〓O〓 to single phased γ＇-Fe〓N and the key parameters affecting γ＇-Fe〓N formation are investigated.

第一次获得由针状γ-Fe〓O〓得到单相γ＇-Fe〓N的氮化条件，阐述了影响γ＇-Fe〓N生成的关键工艺参数；并用磁性测量研究了产物的磁性。

The a -Fe phase in parent Sm-Fe alloys can not be inhibited by increasing the Sm content. During nitrogenation process the Sm-rich phase decomposed into a -Fe phase and SmN phase, deteriorating the magnetic properties.

取得了如下研究结果：单纯提高Sm-Fe合金中的Sm含量不能抑制初生的α-Fe相，而且富Sm相会在氮化过程中发生分解，生成α-Fe相和SmN相，恶化了磁体的磁性能。

The permanent magnets of single-phase exchange coupling Nd 〓N〓 and Nd 〓N〓 with ThMn〓 structure have been prepared by MM and MA process and the following treatments of crystallization、nitrogenation. By means of XRD、SEM、TEM、DTA/DSC and magnetic measurements, the variations of microstructure in each corresponding stage and the related magnetic properties have been studied systematically.

本文采用机械合金化和机械研磨法及随后的晶化、氮化处理分别制备了具有ThMn〓结构的Nd〓N〓单相耦合及Nd〓N〓纳米永磁材料，借助于X射线衍射、扫描电镜、电子探针、透射电镜、差热分析以及磁测量等分析技术系统地研究了上述工艺各阶段对应的组织结构的变化以及它们与磁性能的相互关系。

Keywords Sm_2Fe_（17）-type alloy;excess Sm to compensate;phase composition;nitrogenation;magnetic properties

Sm2Fe17型合金；钐补偿；物相；氮化；磁性能

Five synthesis methods of AlN powder were discussed,namely direct nitrogenation of Al powder,carbothermal reduction of Al2O3,chemical vapor deposition,sol-gel method,self-propagating high-temperature synthesis and plasma chemical synthesis.

凝胶法、自蔓延高温合成法和等离子化学合成法；分析AlN烧结助剂的选择和5种烧结工艺：热压烧结、无压烧结、放电等离子烧结、微波烧结及自蔓延烧结；阐述AlN基板的制备工艺及其影响因素。

Five synthesis methods of AlN powder were discussed, namely direct nitrogenation of Al powder, carbothermal reduction of Al2O3, chemical vapor deposition, sol-gel method, self-propagating high-temperature synthesis and plasma chemical synthesis. The choice of AlN sintering additives and five sintering technologies were analysed, namely hot pressing sintering, pressureless sintering, spark plasma sintering, microwave sintering and self-propagating sintering. The preparation processes of AlN substrate and its influencing factors were expounded.

介绍AlN陶瓷的典型性能和导热机理；讨论AlN粉末的5种合成方法：铝粉直接氮化法、Al2O3碳热还原法、化学气相沉积法、溶胶凝胶法、自蔓延高温合成法和等离子化学合成法；分析AlN烧结助剂的选择和5种烧结工艺：热压烧结、无压烧结、放电等离子烧结、微波烧结及自蔓延烧结；阐述AlN基板的制备工艺及其影响因素。

The well type gas nitrogenation oven uses the multi-layered multistage multi-link multi-spot assignment type ammonia input mode, enables the active nitrogen member fast evenly with the work piece surface union, forms the even fast nitrided level, the coordinate high speed spiral air flue, the effective addressing work piece blind hole and the deep hole nitriding craft, nitrides strongly by the microcomputer programmed control infiltrates, the diffusion technology heating curve.

井式气体氮化炉采用多层多段多环多点分配式氨气输入方式，使活性氮气分子能快速均匀地与工件表面结合，形成均匀快速氮化层，配合高速螺旋风道，有效解决工件盲孔和深孔地氮化工艺，由微电脑程序控制氮化强渗、扩散工艺加热曲线。

METHOD:Synthesis of paracetomol by hydrogenating and acetylating the p-nitrogenation at different conditions.

以对硝基酚和醋酐为原料，Pd-C或Pt-C作催化剂，加氢制备扑热息痛，优选反应条件。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。