硅粉

硅粉水泥石小角度X射线散射实验研究（Ⅱ）&微孔界面过渡层厚度

Experimental Study on the Silica Fume Cement Paste by Small Angle X-ray Scattering (ⅱ) & Micropore Boundary Transition Layer

氮化硅粉中微量杂质金属的ICP-AES测定

Determination of Impurities in Hot-Pressed Silicon Nitride by ICP-AES

SHS法工艺参数对制备氮化硅粉体的影响

Effect of SHS processing parameters on Preparation of silicon nitride powder

掺纳米SiO2和掺硅粉高强混凝土性能的比较

Comparison of Properties of High Strength Concrete with Nano-SiO_2 and Silica Fume Added

利用废弃微硅粉制备纳米SiO2粉体

Preparation of Silica Nanoparticles from Waste Light Silicon Ash

总之，纳米SiO2的火山灰活性远大于硅粉的火山灰活性。

The pozzolanic activity of nano SiO 2 was much greater than one of silica fume .

掺纳米SiO2与掺硅粉的水泥硬化浆体的性能比较

Research on the comparison of properties of hardened cement paste between nano-SiO_2 and silica fume added

添加剂TiO2和硅粉能很好的改善刚玉材质的烧结性能，并能降低其高温热膨胀系数。

TiO2 and Si can improve the sintering of corundum and decrease their coefficients of thermal expansion .

首先是对硅粉的清洗和表面粗化，通过SEM电镜观察得到，采用5%的NaOH清洗液可得到表面具有一定粗糙度，且损失较少的硅粉原料。

First is silicon powder cleaning and surface coarsening . Observed by SEM : 5 % NaOH coarsening solution could make surface rough .

粉体二次水化速率大小及水化程度高低依次为复合粉体、纳米SiO2粉、硅粉。

The order of secondly hydrate speed rate and degree of these powders are the mixed powders , nano-SiO-2 , silica fume .

对Fe元素而言，除了变成难溶性的氧化物外，在热氧化过程中还发生了由氮化硅粉料表面向颗粒内部的扩散。

In addition to formation of insoluble species , diffusion of Fe3 + from particle surface into the bulk of silicon nitride powder is also found after thermal oxidation treatment .

作者应用XRD物相分析净浆稠度与凝结时间和硬化浆体强度试验，对掺纳米SiO2与掺硅粉的水泥硬化浆体的性能进行了比较性研究。

The comparison of properties of hardened cement paste ( hcp ) between nano SiO 2 and silica fume added has been studied by XRD .

反应后硅粉的表面经过扫描电镜分析，发现有明显的凹坑，凹坑是活性触体Cu3Si产生的地方，符合催化吸附机理。

After reaction , the surface of silicone is analyzed by SEM and obvious pits where active Cu_3Si is formed can be discerned , which accords with the g-s-s catalytic mechanism .

利用提高硅粉薄层温度的方法，使冷等离子体对硅提纯达4N（99.99%）。

Rising the temperature of silicon powder layer , the cold plasma ;

镁砂铝矾土、硅粉、硅粉镁砂铝矾土体系焊料可塑性差、分散性差、易固化且与Si3N4陶瓷母材粘附性差；

The slurry properties of the Magnesia & Bauxite adhesive is poor in plasticity and conglutination with Si_3N_4 ceramics , which also solidify easily .

通过金相显微镜和SEM研究了复合材料的形貌，对添加锌后的烧结产品进行了分析，并与铝硅粉末体烧结产品对比。

The microstructure was observed and analyzed through optical microscope and SEM . The zinc added sintered composite product were studied and compared with the Al and Si powder sintered product without zinc .

本文提出以ACR为改性载体，在ACR聚合阶段分别与纳米SiO2分散液、硅粉、纳米SiO2白炭黑进行复合研究。

This paper choose ACR as modified vector , compound silica sol 、 silica fume and nano-SiO2 with ACR in the process of polymerization .

应用KH-570和十六烷基三甲基溴化铵对硅粉和纳米SiO2进行偶联接枝改性，通过红外验证了表面改性效果。

Application of KH-570 and CTAB modified on silica fume and nano-SiO2 , using IR characterized the surface modification effect .

原粉和B.t.硅粉分析

Formulation , B.t. The Analysis of Silicon Powder

采用球磨与溶胶-凝胶化学方法结合制备了纳米硅粉以及纳米Si／SiO2复合薄膜，研究其结构和发光性能，探索了采用该方法制备纳米镶嵌复合薄膜的可能性。

Nano-Si powder and nano-Si / SiOa composite films were prepared by coupling ball milling and sol-gel technologies , structure and luminescence properties of this kind of powder and film were also studied .

实验氮化工艺控制在1350℃下连续氮化10小时，以Fe和Fe+Al为添加剂，这对硅粉氮化有利。

The nitriding process of this experiment selected a reaction time of 10 hours at 1350 C , together with Fe and Fe + Al elements as additives . Only this is benefit to the nitridation of silicon powders .

在钨粉中掺入硅和钠元素，在W－Ni－Fe合金混合料中添加纯硅粉，通过实验得出硅和钠对高比重钨合金的力学性能会产生不利的影响。

When Si and Na elements are mixed into W ponder , and when pure Si ponder is added into W-Ni-Fe alloy , disadvantageous influences on mechanical properties of high density W-alloys take place which are confirmed by experiments .

研究了硅粉直接氮化反应合成氮化硅粉末的工艺因素（包括硅粉粒度、氮化温度、成型压力、稀释剂含量等），借助XRD，SEM等测试手段测定和观察了氮化产物的物相组成和断口形貌。

Silicon nitride powder was prepared via direct nitridation process of silicon powders . The influences of temperature , compact pressure , particle size and diluents on the nitridation progress were studied with XRD , SEM and EMPA .

因此我们采用溶胶-凝胶法将纳米硅粉均匀的分散在介孔结构的ZrO2当中，并采用匀胶机旋转涂膜法将其制成薄膜电极。

A mesoporous Si / ZrO_2 nanocomposite film was fabricated by surface sol-gel process . The Si nanoparticles as active material were dispersed homogeneously into the mesoporous ZrO_2 film .

微硅粉能显著改善EPS颗粒与水泥浆体的粘结性能，提高EPS轻质混凝土抗压强度，而掺入钢纤维则能显著改善其干缩性能。

Fine silica fume greatly improves the bond between the EPS beads and cement paste and increases the compressive strength of EPS concrete . In addition , adding steel fiber significantly improves the drying shrinkage .

本文通过掺加高效减水剂、降低水灰比、掺加磨细矿渣和硅粉配制了C80高强混凝土（HSC）。

Here the HSC of SOMPa is achieved through adding super-effective water reducer , fined slag and silicon fume , and decreasing the water / cement ratio .

本论文以硅粉为原料，通过冷等静压成型，采用反应烧结制备出纯Si3N4陶瓷和Si3N4基复相陶瓷。

Especially , the CIP could achieve near net-shape or net-shape forming . In the paper , the silicon power was raw material , shaped in CIP . The pure Si_3N_4 and multiphase ceramics were prepared in reactive sintering .

初步从中心质假说、最大密实理论、力学分析和硅粉对RPC材料的贡献等几个宏观方面探讨了RPC200的超高强机理。

The high mechanism of RPC200 has been studied tentatively from centroplasm hypothesis , most density theory , mechanics analysis and silicon powder contribution for RPC .

结果表明，高铝矾土-硅粉试样在流动N2中的氮化反应过程可大致分为3个阶段：1）Si粉氮化阶段（900~1200℃），Si粉氮化生成Si3N4和Si2N2O；

The results show that the reaction involved proceeds in three stages as follows : ( 1 ) Nitridation stage of Si powder with formation of Si_3N_4 and Si_2N_2O ( 900 ~ 1200 ℃) .

通过加入无定形硅粉，并延长球磨时间10h，绝缘电阻、桥丝熔断时间等指标均符合产品技术要求。

By adding amorphous silica powder , and prolonging the grinding time 10h , the insulate resistance and the fusing time of bridge wire are all satisfied with the requirement .