材料期刊网

Preparation and Properties of Macroporous Silicon Nitride Ceramics by Gelcasting and Carbonthermal Reaction

Wen ZHANG

材料科学技术（英文）

Macroporous silicon nitride (Si3N4) ceramics with high strength, uniform structure and relatively high porosity were obtained by gelcasting and carbonthermal reaction in a two-step sintering technique. Microstructure and composition were investigated by scanning electron microscopy (SEM), transmissi...

关键词: Ceramics , null , null , null

Long Periodic Structure in ZrO2-Y2O3 Ceramics

Jiancun RAO , Yu ZHOU , Douxing LI

材料科学技术（英文）

A new type of long periodic structure has been found in ZrO2-Y2O3 ceramics in annealed states. High resolution electron microscopy (HREM), selected area electron diffraction, and computer simulation have been used to reveal the presence of the long periodic structure. The unit cell of the long perio...

关键词: Ceramics , null , null , null , null

Mo6+ Modified (K0.5Na0.5)NbO3 Lead Free Ceramics: Structural, Electrical and Optical Properties

材料科学技术（英文）

关键词:

Long Periodic Structure in ZrO2-Y2O3 Ceramics

材料科学技术（英文）

关键词:

Preparation and Properties of Macroporous Silicon Nitride Ceramics by Gelcasting and Carbonthermal Reaction

材料科学技术（英文）

关键词:

Substituent Influence of Yttria by Gadolinia on the Tetragonal Phase Stability for Y2O3-Ta2O5-ZrO2 Ceramics at 1300 ℃

材料科学技术（英文）

关键词:

单相Na0．5Bi0．5Ti1-xMnxO3陶瓷中的多铁性

段寒凝 , 伍茂松 , 邱洋 , 霍绍新

低温物理学报

溶胶凝胶法制备了Na0．5Bi0．5Ti1-xMnxO3（x=0，0．02，0．04）陶瓷样品，X射线衍射（XRD）分析表明陶瓷样品均形成了单一的钙钛矿（ABO3）型结构且没有杂质相的形成．随着Mn含量的增加，XRD峰向高角度方向移动，表明Mn离子进入Na0．5Bi0．5TiO3晶格．掺杂样品均表现...

关键词: Na0．5Bi0．5TiO3 , 陶瓷 , 多铁性