氮化硼

The electron displacement polarizabilities in the hexagonal boron nitride crystal are evaluated by the new model. The results are compared with those from the classical models to point out the applied scope of the new model.

根据该模型计算了六方氮化硼晶体的电子位移极化率，并与经典模型的计算结果进行了比较，进一步分析了所提出模型的适用范围。

On the basis of the introduction and analysis of the history, current situation and development of explosive synthesis of superhard materials, the mechanism and technology of diamond and dense boron nitride synthesis by shock compression and some explosive mechanics problem in explosive synthesis have been studied systematically in this research.

本文在对超硬材料爆炸合成研究的历史、现状及发展趋势进行评介、总结与分析的基础上，以金刚石、高密相氮化硼为研究对象，对爆炸合成理论与技术，以及爆炸合成中所涉及的一些爆炸力学理论问题进行了较为系统的研究。其主要研究成果如下

As a result of diamond, cubic boron nitride of high prices, with good wear resistance, and the consolidation of their manufacturing and general abrasive abrasive abrasive different consolidation, with the exception of super-hard abrasive layer, there are transition layer and matrix.

由于金刚石、立方氮化硼的价格高、具有很好的耐磨性能，用它们制造的固结磨具与普通磨料固结磨具不同，除超硬磨料层外，还有过渡层和基体。

The phonon dispersion curves of single wall boron nitride nanotubes were calculated.

计算了单壁氮化硼纳米管的声子色散关系，给出了扶手椅管和锯齿管拉曼和红外活性模的频率随管径的变化规律。

As the diamond, cubic boron nitride of high prices, with good wear resistance, they are manufactured with ordinary abrasive Bonded abrasive Bonded abrasive different, in addition to super-hard abrasive layer, there are transition layer and matrix.

由于金刚石、立方氮化硼的价格高、具有很好的耐磨性能，用它们制造的固结磨具与普通磨料固结磨具不同，除超硬磨料层外，还有过渡层和基体。

Is located in the city, the northwest region of considerable size artificial diamond, CBN wheel, diamond drill bit products and professional manufacturing enterprises.

西安航都超硬磨具有限公司坐落在西安飞机城内，是西北地区颇具规模的人造金刚石、立方氮化硼砂轮，金刚石钻头及其制品的专业生产制造企业。

The higher the hot-press temperature and pressure, the higher the cBN content and crystalline perfection were.

而且，随着热压温度、压力和时间的增加，样品中立方氮化硼的含量有明显提高。

The moving path and the instantaneous speed of the workpiece center point on the crank rocker arm were derived.

研究了曲柄摇杆机构中各杆长度对工件中心点运动轨迹及瞬时速度的影响规律，寻求出了符合设计条件的最优组合参数，并将其成功地用于立方氮化硼材料的精密抛光技术中，加工效率比传统的抛光方式提高50%，取得了良好的效果。

At present, grinding is one of main machining methods in finish machining and semi-finish machining and grinding wheel is an important grinding tool in the process of grinding machining. Grinding wheel is usually mounted on surface grinding machine, external circular grinding machine and internal circular grinding machine, and can also be mounted on grinding wheel machine, knife grinder and universal cutter grinder for grinding of cutting tool.

专业生产各种规格的金刚石和立方氮化硼砂轮，专业顾问13715366652产品包括金刚石树脂砂轮，CBN树脂砂轮，金刚石电镀砂轮，金刚石青铜砂轮，陶瓷金刚石砂轮，磨削是目前半精加工和精加工的主要加工方法之一，砂轮则是磨削加工中重要磨具，砂轮一般安装在平面磨床、外圆磨床和内圆磨床上使用，也可安装在砂轮机磨刀机，万能磨刀机上刃磨刀具。

Boron nitride thin films were prepared on the (100)-oriented surface of n-Si(0.008~0.02 Ωm) by means of R.F.

利用射频磁控溅射方法，在n型(100)Si(0.008~0.02Ωm)基底上沉积了氮化硼薄膜。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。