硼粉

硼粉改性对推进剂工艺性能的影响

Effect of Modified Boron Powder on Propellant Processing Characteristics

金属镁热还原B2O3制备无定形硼粉的热力学分析

Thermodynamic Study of Magnesiothermic Reduction of B_2O_3 for Preparing Amorphous Boron Powder

高B4C相含量极细碳化硼粉的制取

A study of superfine boron carbide powder with high b_4c phase content

椭圆形定距柱螺旋板式换热器的传热特性研究金属镁热还原B2O3制备无定形硼粉的热力学分析

Researches on the Heat Transfer Characteristics of the Spiral Plate Heat Exchangers with Non-Circular Pin Fins Thermodynamic Study of Magnesiothermic Reduction of B_2O_3 for Preparing Amorphous Boron Powder

以LiOH、HF为主要原料，采用中和沉淀法对超细硼粉进行了表面包覆。

The surface of superfine boron powder was coated with lithium fluoride prepared by reacting LiOH with HF by the neutral precipitation method .

酸度和粘度分析的结果表明，经PBT包覆后硼粉加水悬浊液体系的pH值明显增大，并有效的降低了HTPB体系的粘度。

The analysis results obtained by acidity instrument and rotary viscometer show that coating of PBT can improve the value of pH of the solution with boron and effectively reduce the viscosity of propellant .

采用不同的方法用高氯酸铵、纳米铝粉、LiF、HTPB对硼粉进行了包覆处理，并对包覆工艺进行了探索，研究了不同包覆方法和包覆比对复合粒子性能的影响。

The results are shown as follows : 1 . AP , nano aluminium powder , LiF , HTPB are separately coated on boron particles and its technics is explored .

结果表明：炭黑和硼粉加入量（w）分别为45%和55%时，经自蔓延燃烧反应后可以得到粒度均匀的碳化硼（B4C）粉体，且碳黑已部分石墨化。

The results show that : B_4C powder with uniform size distribution is prepared with 45 % carbon black + 55 % boron powder , and the carbon black is partly graphitized .

针对此问题，本文探讨了B2O3粉镁热还原法制取硼粉时物料配比、反应物粒度等因素对产品纯度的影响并分析了原因；

To solve this problem , the effect of material proportion and reactant size on product purity when preparing boron powder from B_2O_3 by heating reduction with magnesium is discussed in this paper . And the reason for this effect is analysed at the same time .

结果表明，硼粉颗粒表面包覆了均匀且致密的LiF薄膜，薄膜厚度25nm。

The results show that the film on the boron particles is well distributed and compact and the thickness of film is about 25 nm .

这表明MgB2相形成的温度并不特别依赖于硼粉的尺寸。

This indicates that the phase formation temperature of MgB_2 do not depend on the B powder size .

原料硼粉在MgB2相形成中的作用已经利用原位高温电阻率（HT-ρT）的测量技术进行了研究。

The size effect of the raw B powder on the MgB_2 phase formation is studied by the technique of in-situ high temperature resistivity ( HT - ρ T ) measurement .

金属镁热还原法制备非晶硼粉的研究

Study on Preparation of amorphous boron powder by heating reduction with magnesium

超高速集成电路用高纯硼粉的研制

Preparation Study of High Purity Boron Powder for Ultrahigh Speed Integrated Circuit

硼粉的包覆及含包覆硼推进剂燃烧残渣成分分析

Coating of boron particles and combustion residue analysis of boron-based solid propellants

建立了硼粉中总硼含量的测定方法。

Determination method Of the total boron in boron powder is described .

碳化硼粉气流粉碎机理

Mechanism of air flow attrition of boron carbide powder

超细硼粉的氟化锂包覆

Surface Coating of Superfine Boron Particles With Lithium Fluoride

高振实密度碳化硼粉的制备

Preparation of boron carbide powders with high tap density

硼粉中总硼含量的测定

Determination of the total boron in boron powder

熔盐电解法制备元素硼粉

Preparation of Boron by Molten-salt Electrolysis

利用行星磨制得了不同粒径的硼粉，得到了较为成熟的工艺，研究了工艺中的影响因素。

Different diameter boron particles are made with planet milling-ball and its technics has been achieved .

氮化硼粉体的合成研究

Synthesize of Boron Nitride Powder

硼粉在冲压发动机补燃室中可燃性研究

Investigation into the Feasibility of Boron Powder Burning in the Second Combustor of Ducted Rocket Motor Bubble Chamber

传统的金属镁热还原法制取的硼粉纯度低，含有大量的镁、氧等杂质。

The boron powder prepared by traditional heating reduction with magnesium is lower in purity and contains high impurities , such as Mg , O.

目前主要的改善方法是向铝包镍中添加元素，例如：添加金属钼、镍硼粉和难熔金属硅化物等。

The main measurement to improve its properties is to add something to the nickel-aluminum system , such as metallic molybdenum , nickel-boron and refractory metal silicates .

文中介绍各向同性快淬钕铁硼粉及制成的粘结磁体的性能，成型工艺，并指出各向同性粉结钕铁硼磁体在无刷电机中的广泛应用。

The article introduces came magnetic hardening Nd-Fe-B powder in uniform property and coher - ence magnets performance , shape technique and wide applications in brushless motors .

以碳纳米管为原料，利用真空封管技术在高温下用硼粉对碳纳米管进行掺杂处理，获得了碳化硼纳米管（纤维）。

Boron carbide nanotubes ( nano-fibers ) was prepared by boron powder and carbon nanotubes ( CNTs ) at high temperature in a quartz tube after being vacuumed .

直接合成了碳化硼粉，测定了其化学成分、点阵常数、平均粒径，确定了合成反应的最佳工艺参数。

The boron carbide powder is synthesized directly and its composition , lattice constant and mean particle size are measured , the optimum technological parameters of synthetic reaction are determined experimentally .

实验证明，采用提高冶炼温度和延长冶炼时间，在电弧炉中冶炼高B6.5C相碳化硼粉是可行的。

The tests show that it is practical for producing rich B_ ( 6.5 ) C boron carbide powder by means of raising smelting temperature and prolonging smelting time in an electric arc furnace .