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1)  ZrO 2/Fe 3O 4
ZrO2/Fe3O4
2)  Fe_3O_4
Fe3O4
1.
Fe_3O_4/cross-linked PVA composite microspheres were synthesized by the cross linking reaction of polyvinyl alcohol and glutaraldehyde in the W/O emulsion using HCl as a catalyst.
以PVA为骨架材料,戊二醛为交联剂,盐酸为催化剂,通过乳化-化学交联法,在W/O型的乳状液中制备了磁性高分子微球——Fe3O4/交联PVA复合微球。
2.
A novel Fe_3O_4/acrylate-based magnetic adsorbent were prepared by suspension polymerization using divinybenzene as a crosslinker.
以二乙烯苯为交联剂,采用悬浮聚合法制备了Fe3O4/丙烯酸系磁性吸附剂。
3.
The present study indicated that such mechanism was attained through the formation of Fe_3O_4 barrier.
本工作对防蚀除锈的机理进行研究,提出形成Fe3O4阻隔层是防蚀除锈的本质,并从Fe3O4的形成、结构等多方面进行较为详实的说明。
3)  magnetite [英]['mægnitait]  [美]['mægnə,taɪt]
Fe3O4
1.
X-ray diffraction,field emission scanning electron microscopy and vibrating sample magnetometer were used to characterize the magnetite nanoparticles.
结果表明:产物Fe3O4为反尖晶石结构,其16 h、24 h合成产物平均粒径分别为145 nm和495 nm。
2.
More and more attentions have been paid to preparation methods as well as morphologic manipulation of magnetite nanoparticles since the characters and applications of magnetite nanoparticles are usually decided by their preparation method and shape.
纳米Fe3O4因其特殊的理化性质及在生物医学领域潜在的应用而得到广泛研究。
3.
For the perchloric acid system,the influences of various factors on the dispersion of magnetite particles were investigated.
采用共沉淀法制备了纯Fe3O4纳米粒子,分别用高氯酸、四甲基羟胺和油酸/十二烷基苯磺酸钠为表面活性剂对其进行表面处理后分散在水中,得到了三种水基磁分散液。
4)  ZrO_2
ZrO2
1.
The HA/ZrO_2 functional gradient coatings were fabricated by net-energy-controlled plasma spraying equipment PRAXAIR 4500.
利用净能量控制的PRAXAIR4500型等离子喷涂系统,在钛合金基体上制备出HA/ZrO2功能梯度涂层,采用HTEM、XRD、SEM等对涂层过渡层ZrO2相的结构特征进行分析。
2.
To improve the intensity and electrical conductivity of copper matrix composite,nano ZrO_2 stabilized with 3mol% Y_2O_3 was selected as the reinforcement,which had good mechanical and thermal physical performance.
为了提高铜基复合材料的强度和电导率,采用具有良好机械性能和热物理性能的ZrO2(3%(摩尔分数)Y2O3)作为增强相,原位化学法制备了ZrO2纳米颗粒增强铜基复合材料,其主要制备工艺包括前驱复合粉体CuO、ZrO2的制备,经氢气还原得到ZrO2/Cu复合粉,再经过压制,真空烧结,复压等工序制得最后的样品。
3.
ZrSiO_4-ZrO_2 system materials for tundish upper nozzle were developed from zircon, fused PSZ-Mg and fused PSZ-Ca.
以锆英石、电熔PSZ-Mg,电熔PSZ-Ca为原料,Y2O3为添加剂,试制出高致密体的ZrSiO4-ZrO2质中间包上水口,研究了颗粒级配、成型压力和Y2O3添加剂对ZrSiO4-ZrO2质中间包上水口性能的影响,并利用XRD进行物相分析,利用SEM和EDS进行显微结构分析。
5)  zirconia [英][zə'kəuniə]  [美][zɚ'konɪə]
ZrO2
1.
The purest, finest and even zirconia nanometer powder is the key to the preparation of Zirconia Nanocrystalline ceramics materials with fine property.
ZrO2纳米复合粉末具有高比表面积和高活性等特性,可以显著提高催化剂效率,因而其纳米微粒在催化方面的应用很广。
2.
Application of zirconiasupported catalysts and its super solid acids was reviewed in this article.
综述了ZrO2负载的铜和铁等金属的催化剂和固体超强酸的应用,并简述了添加适量助剂对催化剂催化性能的影响。
3.
The electrochemical corrosion of mild steel was evaluated through potentiodynamic polarization curves without and with zirconia coatings.
采用溶胶 -凝胶法在基板上涂覆了ZrO2 涂层 。
6)  ZrO 2
ZrO2
1.
5 mol% CeO 2 doped ZrO 2 powder was prepared by using a homogeneous precipitation and Hydrothermal Synthesis method from ZrOCl 2 as the starting materials and urea as precipitation agent.
5mol%CeO2稳定的纳米四方相ZrO2 。
2.
5 mol%CeO 2 doped ZrO 2 powder was prepared by using a homogeneous precipitation and Hydrothermal Synthesis method from ZrOCl 2 as the starting materials and urea as precipitation agent.
5mol%CeO2 稳定的纳米四方相ZrO2 。
3.
ZrO 2 is a kind of important starting material for preparing structural and functional ceramics.
ZrO2 是重要的结构陶瓷和功能陶瓷的原材料 ,有关纳米ZrO2 陶瓷粉体的制备方法的研究很多。
补充资料:Fe-C-O和Fe-H-O系平衡图
      铁及其氧化物与CO-CO2或 H2-H2O 混合气体达到平衡时的气相组成与温度的关系图(图1)。它是由实验测得的数据绘制的,是冶金过程物理化学常用的一种优势区图。图中三条线分别代表下列三个反应的平衡气相组成:
  
570℃以下:Fe3O4+4CO3Fe+4CO2 (1)


  
570℃以上:Fe3O4+CO3FeO+CO2 (2)


  
FeO+COFe+CO2 (3)


  3Fe2O3+CO─→2Fe3O4+CO2反应达平衡时的一氧化碳分压值太小,几乎与横坐标重合,图中未标出。如果实际气相组成pco/(pco+pco2)高于平衡组成,则反应将向右进行,此时反应式等号右边的固相是稳定的,左边的固相不稳定。图中每条线上方的区域就是该反应式右边固体的稳定存在区。这三条线将整个图划分为三个区域,即Fe、FeO、Fe3O4的稳定存在区。三条线交点是四相(Fe、FeO、Fe3O4及气相)共存点(见相图)。
  
  
  在钢铁冶炼过程中,常利用此图来确定在给定温度和气相组成条件下能够稳定存在的固相。此图还明确表明铁的各级氧化物是逐级转化的(见Fe-O 状态图)。
  
  由图1可见,在虚线(Fe-H-O平衡)与实线(Fe-C-O平衡)交点温度(820℃)以上,H2比CO具有更强的还原能力;在820℃以下,则正相反。
  
  CO对铁还有渗碳作用。当气体中的比值pco/(pco+pCO2)超过反应(4)的平衡组成时,会发生铁的渗碳反应:
  
2CO(气)─→CO2(气)+[C] (4)

[C]表示溶解于铁中的碳。图2绘出了一系列 [C]含量下渗碳反应达到平衡时的气相组成与温度的关系曲线。此图直接示出在给定温度和[C]含量的情况下,气相对铁是渗碳还是脱碳。这类问题在钢的热处理时经常遇到。FeO是非化学计量化合物(见Fe-O 状态图),其中氧含量与其平衡气相组成的关系也在图2中绘出。
  

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