flap valve,plate valve

The effects of plate-like alumina seed amount on the microstructure and properties of alumina ceramics prepared by pressureless sintering were studied,when plate-like alumina single crystal particles were used as seeds and CaO-Al2O3-SiO2(CAS) were used as additives.

以片状氧化铝单晶颗粒为晶种,CaO-Al2O3-SiO2(CAS)为添加剂,采用无压烧结研究了晶种加入量对氧化铝陶瓷显微结构与性能的影响。

A process for the preparation of different particles of CaC03 is intruducted, the effect of various factors on CaCO3 crystal is discussed and spherical and plate-like calcium carbonate with small partical size are obstained.

采用溶液法制备了不同晶形碳酸钙,讨论了各种因素对碳酸钙结晶的影响,并得到了粒径较小的球状和片状碳酸钙。

The effects of plate-like alumina seed additions on the microstructure and properties of alumina ceramics were studied, when plate-like alumina single crystal particles were used as seeds and CaO-Al2O3-SiO2(CAS) were used as additives.

本文以片状氧化铝单晶颗粒为晶种,CaO-Al2O3-SiO2(CAS)为添加剂,研究了晶种加入对氧化铝陶瓷显微结构与性能的影响。

The ultrafine flake copper particles with diameter from 1 μm to 10μm were prepared by using chemical reduction method with ascorbic acid as reducing agent.

采用液相化学还原法,以抗坏血酸为还原剂,NH3·H2O、乙二胺或EDTA为络合剂,制备了1～10μm表面光滑的片状超细铜粉。

Preparation of platelike CaCO_3 by emulsion method;

乳液法制备片状CaCO_3

The influence factors on the formation of platelike crystalline α-Al2O3 powders were investigated by XRD and SEM.

本研究以工业氢氧化铝粉体为原料,加入矿化剂和晶种, 通过高温固相反应制备出分敌均匀的片状α-Al2O3粉体。

Based on the principles of biomineralization,nano flake-like hydroxyapatite(HA) were synthesized through biomimetic method using Ca(NO3)2·4H2O and(NH4)3PO4·3H2O as reagents and chondroitin sulfate as template.

依据生物矿化的原理,以硫酸软骨素(ChS)为模板合成了片状纳米羟基磷灰石(HA)。