片晶
- Lamellar crystal;lamella crystal
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测量单晶硅片晶面弯曲的X射线方法
Measurement method of crystal plane bow in single crystal silicon by X-ray
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片晶的生长方向为晶体a轴。钡铁氧体薄膜的c轴取向生长
The spherulite radial direction can be determined to be the crystal a-axis . c-Axis Growth of Ba-Ferrite Thin Films
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流化床气流磨粉碎制备超细SiC片晶的实验研究
Study on Preparation of Ultra-fine SiC Platelets by Fluidized Bed Jet Mill
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用粉碎及分离工艺制备SiC片晶
Preparation of SiC platelets by grinding and separation process
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结果表明:沉积电位对薄膜形貌有着显著的影响;多孔片晶ZnO为六方纤锌矿结构;
The results of XRD show that the thin film has a wurtzite structure .
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超细SiC片晶的制备方法
Methods of Preparation for Ultrafine SiC Platelets
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掺加SiC片晶对反应烧结SiC性能的影响
Effect of SiC Platelets Incorporation on Microstructure and Mechanical Properties of Reaction Bonded Silicon Carbide
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用广角X射线衍射、小角X光散射等手段对硬弹性聚丙烯中排状堆积片晶的形成及结构进行了研究。
The formation and the structure of the unique piled lamellae rows in hard elastic polypropylene have been studied by WAXD and SAXS techniques .
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但是,退火热处理后,A和B试样片晶的厚度有所增加,而取向度有所提高;同样,C试样品体的尺寸也有所增加。
However , annealing could improve the orientation and thickness of lamellae structure in samples A and B. Similarly , the size of crystal in sample C also increased . 5 .
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通过DSC上(熔融峰、结晶峰)呈现单峰确定了此共混体系在片晶水平上共晶;
Only a single melting or cooling peak was found in DSC curves for all blends , showing cocrystalline in patch-crystal level .
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在熔体拉伸薄膜中统组分的LLDPE与IPP均以高取向的片晶形式存在,片晶生长方向垂直手拉伸方向。
The growth direction of LLDPE and IPP lamellae is perpendicular to the drawing direction .
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当石墨粒径小于4μm时,随石墨粒径增大,HDPE的结晶度上升,结晶速率增加,片晶尺寸分布变窄。
When the particle size of colloid graphite was less than 4 m , the crystallization degree and speed of HDPE increased with the increase of the particle size .
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这种BN片晶的生成,能发挥BN层状结构可分散裂纹尖端应力集中的特点,有助于改善材料的力学性能。
Because of this generation of flake-like BN , stress concentration of crack tip can be dispersed via BN layered structure , helping to improve the mechanical properties of materials .
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超细SiC片晶由于其高强度、高弹性模量和导热系数已成为替代价值昂贵、制备技术复杂SiC晶须的理想的增韧材料。
The ultrafine SiC platelets , as an ideal toughening material , has been substituted for SiC fiber which is expensive and hardly prepared , because of its high strength , high modulus of elasticity and thermal conductivity .
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结果表明,当烧结温度较低时,SiC片晶在烧结体中仍以片晶的形态存在;而当烧结温度提高到1800℃后,SiC片晶明显向SiC颗粒转变。
It was found that SiC platelets existed in the material sintered under low temperature ( 1 500 ℃), whereas they obviously transfered to SiC particles while the sintered temperature were higher up to ( 1 800 ℃) .
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通过控制结晶法,在一定的搅拌强度、一定的Co2+浓度、一定的pH值和惰性气体保护的条件下合成出高纯度和高结晶度的β-Co(OH)2的片晶细粉。
Form cobalt hydroxides were synthesized through a controlled crystallization process under the certain mixing intensity , Co 2 + concentration , pH value and the protect of the inert gas and the products was fine platelet powder with high purity and high crystallinity .
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PbSO4纳米片晶的微乳法制备与自组装
Preparation and Self-assembly of Plate-like Nanocrystal of PbSO_4 via Microemulsions Approach
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采用XRD、FT-IR及SEM对产物的组分及形貌进行了分析,发现产物为由纳米尺寸片晶组装而成的花状多孔CHAp微球。
XRD , FT-IR , and SEM were employed to analyze the chemical composition and morphology of the productions . The results showed that the flowerlike porous CHAp microsphere which assembled by the nano-size flakes was obtained .
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SEM观察表明,裂纹偏转、片晶桥接是主要增韧机理,片晶拔出、基体细化等亦对断裂韧性的增加作出贡献,其作用与晶须增韧的机理相似。
SEM observation shows that crack deflection and platelet bridging are the main toughing mechanisms , and platelet pull-out and reinforcement of the matrix grains also contributed to the improvement in the fracture toughness , which is similar to that of whisker toughening .
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而在LLDPE含量大于50%时,LLDPE形成独立的相区,则不存在附生结晶现象,结果两种片晶的生长方向均垂直于拉伸方向。
There is no above relationship of epitaxial crystallization in the films when the content of LLDPE in the blends is over 50 % because of the formation of independent domain of LLD .
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若将室温辐照聚乙烯重新熔融,然后再于125℃下等温结晶4h后,其片晶厚度则随辐照剂量的增加而变薄,长周期亦随之变短。
If the HDPE samples irradiated at room temperature were melted and then recrystallized at 125 ± 0.1 ℃ for 4 hours , the thickness of crystalline lamellae and the long period are reduced as compared with those without recrystallization .
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经WAXD、SEW分析发现,预热处理后大分子网络相互靠近,使片晶厚化,晶粒尺寸变大,而纤维结晶度有所减小,有利于超倍拉伸的进行。
WAXD and SEM studies show that after annealing , the molecular network get closer , the lamella get thicker , dimensions in ( 110 ) and ( 200 ) normals increased while the crystallinities decreased which is benefit to ultra-drawing .
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由ρ为10-3~10-5g/mL的稀溶液等温结晶,生长了超高分子量聚乙烯(UHPE)片晶。
Small lamellae of ultra-high molar mass polyethylene were grown through isothermal crystallization from dilute solution with concentration ranged from 10 ~ ( - 3 ) to 10 ~ ( - 5 ) g / mL.
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聚乳酸片晶的手性螺旋弯曲
The Chirality Helix Bending of Poly ( lactic acid ) Lamellae
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晶须、片晶、颗粒增韧陶瓷技术
Advancement of Toughening Ceramies with Whisker , Platelets and Particles
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聚乙烯片晶辐照破坏机理的电子显微镜研究
Crystalline lamellar damage in irradiated polyethylene studied with electron microscope
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纤维晶平行于拉伸方向,穿过几个片晶区,其长度在微米范围。
The length of the fibrous crystals is in the order of micron .
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片晶装饰技术研究高分子液晶向列相的向错
Observation of disclination in nematic mesophase of liquid crystalline polymers by lamellar decoration
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聚乙烯片晶中链折迭区的能态
Energy state of chain folding in polyethylene lamella
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辽宁榴辉岩包体的石榴石中金云母出溶片晶的发现
The discovery of phlogopite exsolution lamellae in garnets of eclogite enclaves , Liaoning Province