It was discovered that the reaction on particle and pore surface was fiercely influenced by sintering temperature , and reaction products and their morphology and distribution related to the mechanical properties of materials 研究发现颗粒表面和孔隙表面的化学反应受致密温度的强烈影响，材料的力学性能与表面化学反应产物及其形态和分布有关。
Silane coupling agent ( kh - 560 ) with active groups was used for the treatment on silica particles in this article . the surface of silica which was treated in the way of chemical bonds was changed from hydrophilication to amhydrophilication 本文采用具有活性基团的硅烷偶联剂( kh - 560 )对二氧化硅粒子进行了表面改性，使二氧化硅颗粒表面由亲水性变为亲油性。
On one hand , these organic function groups decorate the surface of nanoparticles by combining with the surface dangling bonds . and most important , they may act partially as the donor of d - a pairs in the sa luminescence by providing electrons 讨论了吸附在纳米颗粒表面的一oh ，一ch = ;和一coo等有机官能团的作用，明确提出了这些官能团中的一部分可能充当了自激活发光施主一受主对中施主的观点
A1n was found in these samples by xrd , which indicats that the reaction between bn and al happened during heating . though dta reveals that al powders were melt at about 660 , the pressed pellets still kept their sharp edges even they were heated up to 900 Dia显示材料在660左右融化，但900烧结1小时后，粉末压片样品仍保持了尖锐的棱角和原来的形状，说明铝粉颗粒表面的氧化层对烧结过程起决定性作用。
We infered that this new absorption band was associated with the effect of charge - transfer transition between adsorbates and colloidal silver particles , not the effect of the surface plasma resonance due to the silver particles aggregation which was usually attributed to in previous research work 我们将其归因于与纳米银颗粒表面间的电荷转移效应( ct ) ，而非通常所认为的因银胶凝聚而产生的表面等离子体共振吸收效应。
When the growth getting higher , the migration rate of carbon atoms was increased , more carbon atoms would pass through catalyst particles to contribute the growth of carbon nanotubes , which increased the growth rate and also resulted in less defects in carbon nanotubes 在较高温度时，随着催化剂活性的提高以及碳原子在催化剂颗粒表面的迁移速率的增加，可提供更多的碳原子用于纳米碳管的有序生长，减少了缺陷的引入。
However , the spray deposited preforms usually contain more than 10vol . % porosity that is a great disadvantage for the mechanical properties . in order to prepare full density products of high mechanical performance , the porous preforms must suffer densification process 然而喷射沉积材料通常存在一定量的孔隙,颗粒表面存在一定厚度的氧化膜,颗粒之间未能完全达到良好的冶金结合状态,因此需要进行后续致密化才能获得理想的组织和性能。
In this thesis , we studied systematically the influence of the annealing on the crystallite structure and fluorescence of zns nanoparticles and the surface state of zns nanoparticles . the main results and innovation are as follows : 1 . zns nanocrystallite was prepared by co - precipitation 本文以退火和清洗为实验手段，较深入的研究了zns纳米晶颗粒尺寸、结构相变、颗粒表面态和发光性质，论文主要内容如下： 1用均相沉淀法合成了晶粒度为11nm的zns纳米晶。
( y , gd ) bo3 : eu3 + was the red phosphors for pdp , which had poor color purity . in this dissertation , solid state reaction method at room temperature was firstly used for coating the ( y , gd ) bo3 : eu3 + particles with hematite . the thickness of uniform hematite coating is about 10nm ( y , gd ) bo3 : eu3 +作为pdp用荧光粉的红粉材料存在色纯度差的弱点，为了提高其色纯度，本文首次采用室温固相法在微米级( y , gd ) bo3 : eu3 +颗粒表面包覆一层10nm左右的均匀的氧化铁的包覆层。
The activation effect of zn2 + modification , including enhancement of emission intensity , slowing of luminescence decay and increasing of quantum yields , results from the formation of zns shell outside the nanoparticles , which is passivating the surface of nanoparticles , eliminating the surface quenching centers , so as to block the nonradiative transition pathways through these kind of quenching centers Zn ~ ( 2 + )表面修饰在纳米颗粒表面形成了zns壳层，钝化了纳米颗粒的表面，消除了表面猝灭中心，阻塞了通过表面猝灭中心进行无辐射跃迁的通道，从而使得发光强度增加，衰减变慢，量子效率提高。
