稀土棕红色陶瓷颜料的制备

在低温下,采用溶胶均匀共沉淀法合成了含少量稀土氧化物CeO2的棕色陶瓷颜料,并应用颜色测定、SEM及XRD分析等手段对颜料的颜色、粒度及结晶构造进行了表征。同时,将合成的颜料应用于陶瓷釉料中,表明该颜料可以应用于1320℃的高温环境下。     

一种新型陶瓷材料及其耐磨性

对新型Ａｌ２Ｏ３－ＴｉＣ－Ｃｏ陶瓷的磨粒磨损，冲蚀磨损及其在单颗粒作用下的摩擦磨损行为进行了研究。与ＡＴ３０（７０ｗｔ％Ａｌ２Ｏ３－３０ｗｔ％ＴｉＣ）陶瓷相比，Ａｌ２Ｏ３－ＴｉＣ－Ｃｏ陶瓷具有更为良好的耐磨性，金属钴的存在提高了基体的韧性，细化了晶粒，其综合力学性能得到了显著提高，ＡＴＣ陶瓷样品耐磨性与其强韧化水平和细致的组织结构有关。     

InxGa1−xAs ohmic contacts to n-type GaAs with a tungsten nitride barrier

Significant reduction of the contact resistance of In_0.7Ga_0.3As/Ni/W contacts (which were previously developed by sputtering in our laboratory) was achieved by depositing a W₂N barrier layer between the Ni layer and W layer. The In_0.7Ga_0.3 As/Ni/W₂N/W contact prepared by the radio-frequency sputtering technique showed the lowest contact resistance of 0.2 Ωmm after annealing at 550°C for 10 s. This contact also provided a smooth surface, good reproducibility, and excellent thermal stability at 400°C. The polycrystalline W₂N layer was found to suppress the In diffusion to the contact surface, leading to improvement of the surface morphology and an increase in the total area of the In_xGa−As between metal and the GaAs substrate. These improvements are believed to reduce the contact resistance.     

Electrical/electronic effects of titanium and iron impurities in EFG and FZ solar cell silicon: SPV/EBIC analysis

In this paper results on surface photovoltage (SPV) and electron beam induced conductivity (EBIC) studies of edge-defined film-fed growth (EFG) and floating zone (FZ) silicon solar cell materials (both p-type) are presented. A systematic comparison based on minority carrier diffusion length and carrier recombination is made between: (i) samples contaminated with Ti and/or Fe, (ii) samples gettered by phosphorous diffusion, and (iii) as-received samples. Deep level transient spectroscopy (DLTS) measurements, together with the iron-boron (FeB) pairing kinetics [1] have successfully been used to detect the presence of Fe in the samples. Even though this process is effective in revealing Fe impurities in p-type FZ silicon it is evidently not suitable for Fe identification in p-type EFG silicon. Ti, like Fe, is found to be a prominent lifetime-limiting metallic impurity in both EFG and FZ silicon. Phosphorous diffusion is proven to be an effective external gettering technique for fast-diffusing impurities such as Fe, but not for Ti.     

以YAG为添加剂的气压烧结氮化硅

本文以添加ＹＡＧ的反应烧结氮化硅（ＲＢＳＮ）为前驱体，采用气氛加压烧结的工艺，在０．５～９．０ＭＰａ氮气压力范围，研究了不同氮压对烧结体的密度、相组成、强度和显微结构的影响及其相互间的关系。研究表明，通过改变氮气压力能有效地调控材料的显微结构，材料的性能又受控于显微结构的变化。     

[NZP]陶瓷零膨胀性能的设计

研究了「ＮＺＰ」材料的零膨胀性能，并尝试对零膨胀的「ＮＺＰ」陶瓷作了设计，从晶体结构、原子复合、各向异性、显微结构和复合材料等方面提出了设计思路。     

反应离化团束（RICB）法生长CN硬质薄膜

用反应离化团束（ＲＩＣＢ）法，以低分子量聚乙烯为蒸发材料，氨气为反应气体，在ＮａＣｌ（１００）和Ｓｉ（１００）衬底上淀积Ｃ－Ｎ薄膜，透射电子衍射（ＴＥＭ）分析表明薄膜中含有β－Ｃ３Ｎ４晶粒，Ｘ射线光电子谱（ＸＰＳ）和红外吸收谱（ＩＲ）表明存在Ｃ，Ｎ原子的化学键合。     

氧化铝/锌合金复合材料界面的SEM观察

利用挤压铸造制备氧化铝／锌合金复合材料，在扫描电镜（ＳＥＭ）上观察复合材料的界面。结果表明，在复合材料中纤维与基体间存在致密界面层，合金元素通过适当的化学反应可改善纤维与基体间的结合；在凝固过程中，纤维／基体界面上的硅在共晶体的共生生长过程中起了领先相作用，导致复合材料的共晶转变是由铝硅共晶转变和锌铝共晶转变两者组成。     

络合沉淀法制备BaTiO_3超细粉末

在分析ＢａＴｉＯ_３前驱体形成机理的基础上，提出了以草酸作为络合剂，用络合沉淀法制备超细ＢａＴｉＯ_３新工艺。用化学分析法测定产物Ｂａ／Ｔｉ比，用ＸＲＤ、ＴＥＭ、ＢＩ－９０激光散射粒度仪对产物的晶型、粒度及形貌进行表征。结果表明：采用该法合成的前驱体，微观组分确定，粒径小，粒度分布窄，近似球形，煅烧后为高纯超细ＢａＴｉＯ_３粉末。     

现代民间青花与现代陶艺

现代民间青花与现代陶艺都是火与土的艺术，都具有粗犷，质朴、自然、大方的共同艺术特点。前者在传统民间青花的基础上，汲取了现代陶瓷科技成就和现代文化艺术成果，而发展成为富有现代艺术意蕴和现代审判内涵的新型民间青花艺术；而后者则是从传统陶艺延伸、扩展、蜕变为纯粹艺术表达和具有独特审判内涵的一门现代艺术。