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graded films
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     In this experiment the author adopted graded films technology and prepared graded Diamond-like Carbon (DLC) film utilizing the twinned microwave-ECR plasma source combing compound Physical Vapor Deposition (PVD) methods. So far, the Si/(Si/ α -C:H) transitional layer has deposited successively in the NiTi substrate, then the graded DLC film is prepared subsequently, a reasonable technologic parameter is expected to advice graded diamond preparation.
     对此,本实验采用人们提出的过渡层技术,利用双放电腔微波-ECR等离子体源,结合复合PVD的方法,先后在NiTi基体上沉积Si和Si/α-C∶H过渡层,然后制备类金刚石薄膜,以期找到一个合理的工艺参数来指导类金刚石的制备。
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     In this study,the twinned microwave ECR plasma source enhanced ion implantation system was used to prepared graded diamond-like carbon(DLC) film through hybrid physical vapor deposition(PVD) and plasma enhanced chemical vapor deposition(PECVD) methods. Graded films of Si/(Si/α-C∶H)/DLC films were investigated. Raman spectra and TEM confirmed the diamond-like characteristics of as-received graded DLC films.
     实验利用双放电腔微波-ECR等离子体源设备,采用复合PVD(physical vapor deposition)和PECVD(plasma enhanced chemical vapor deposition)的方法,先后在NiTi基体上沉积Si和Si/α-C∶H过渡层,然后制备类金刚石薄膜。
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  相似匹配句对
     L-B Films
     L-B膜
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     FILMS
     电影
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     Study of the Thermodynamic Properties in Graded Ferroelectric Films
     梯度铁电薄膜的热力学性质研究
短句来源
     Dielectric Properties of Compositionally-graded and Multilayered BST Thin Films
     梯度多层BST薄膜介电性能研究
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     On Graded V-rings
     关于分次V-环
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  graded films
Inorganic-organic functionally-graded films: The role of intermediate layers between TiO2 coatings and polymer substrates
      
Thus, graded films were deposited exhibiting distinctive composition and crystalline structure along the growth direction.
      
Planar (high-resolution) TEM images also demonstrate that down-graded films have a larger, and more uniform, grain size than up-graded films, and that the latter contain voids.
      
Down-graded films (starting with a BaTiO3 layer at the film/substrate interface) have a much better crystalline quality and a smoother surface than the up-graded films (starting with a (Ba0.75Sr0.25)TiO3 layer at the film/substrate interface).
      
The crystalline quality and surface morphology of the graded films are closely related to the direction of the compositional gradient built into the graded films.
      
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The problem considered here is the response of non homogeneous composite material containing some cracks subjected to dynamic loading. It is assumed that the composite material is orthotropic and all the material properties only depend on the coordinates y(along the thickness direction). In the analysis, the elastic region is divided into a number of plies of infinite length. The material properties are taken to be constants for each ply. By...

The problem considered here is the response of non homogeneous composite material containing some cracks subjected to dynamic loading. It is assumed that the composite material is orthotropic and all the material properties only depend on the coordinates y(along the thickness direction). In the analysis, the elastic region is divided into a number of plies of infinite length. The material properties are taken to be constants for each ply. By utilizing the Laplace transform and Fourier transform technique, the general solutions for plies are derived. The singular integral equations of the entire elastic region are obtained and solved by virtual displacement principle. Attention is focused on the time dependent full field solutions of stress intensity factor and strain energy release rate. As a numerical illustration, the dynamic stress intensity factor of a substrate/functionally graded film structure with two cracks under suddenly applied forces on cracks face are presented for various material non homogeneity parameters.

对于非均匀复合材料中多个裂纹的动态断裂力学问题,提出了一种分析方法,假设复合材料为正交各向异性并含有多个垂直于厚度方向的裂纹,材料参数沿厚度方向为变化的,沿该方向将复合材料划分为许多单层,假设单层材料参数为常数,Fourier变换法,在Laplace域内推导出了控制问题的奇异积分方程组,并用虚位移原理求解,然后利用Laplace数值反演,得出了裂纹尖端的动态应力强度因子和能量释放率.作为算例,研究了带有两个裂纹的基底/功能梯度薄膜结构,分析了材料参数的优化对降低应力强度因子的意义.

Objective: To investigate the value of iontomat in radiography. Methods: Five thousand plain films made byX-ray installation with iontomat and without iontomat in each group, which were graded according to the qualitystandard of first-grade films,were sampled at random. Results: The rate of grade-A films made by Xfray instal-lation with iontomat was much higher than that made by X-ray installation without iontomat (the former being82. 0 % and the latter 28. 1 %, P <0.01). The rate...

Objective: To investigate the value of iontomat in radiography. Methods: Five thousand plain films made byX-ray installation with iontomat and without iontomat in each group, which were graded according to the qualitystandard of first-grade films,were sampled at random. Results: The rate of grade-A films made by Xfray instal-lation with iontomat was much higher than that made by X-ray installation without iontomat (the former being82. 0 % and the latter 28. 1 %, P <0.01). The rate of grade -C films made by X-ray installation with iontomatwas much lower than that made by X-ray installation without iontomat(the former being 0. 8 % and the latter 7.9 %, P<0.01). The main reason for grade C films made by X-ray installation without iontomat was the unfit X-ray dosage. Conclusion: The satisfactory exposure could be obtained and the quolity of the plain films could besteadily improved,due to the iontomat which could control the X-ray dosage exactly for various parts quolity ofthe body.

目的:探讨电离室在普通X线摄影中的应用价值。方法:随机抽取1996年(无电离室X线机)、1997年(配有电离室X线机)所摄普通X光片各5000张,按湖北省三级医院甲级片质量标准,采用双育法评分。结果:1997年甲级片率(82.0%)明显高于1996年(28.1%)(P<0.01),丙级片率(0.8%)明显低于1996年(7.9%)(P<0.01)。结论:电离室用于普通X线摄影,由于能精确的控制各种不同按照部位所需曝光剂量,使胶片达到最理想的感光,从而保证了整体照片质量得以稳定的提高。

Interference effect is used to improve solar performance of Al--N--O selective absorbing surface. Through experiments the film structure of two Al-N-O sublayers with different thickness and metal volume fractions is established. Compared with the graded films, the bi-sublayer films have lower emittance and better thermal Stability. The new films have been used in the mass production of heat pipe evacuated tubular collectors. High solar performance (α=0.93~0.95, (353 K)=0.04~0.06) have been...

Interference effect is used to improve solar performance of Al--N--O selective absorbing surface. Through experiments the film structure of two Al-N-O sublayers with different thickness and metal volume fractions is established. Compared with the graded films, the bi-sublayer films have lower emittance and better thermal Stability. The new films have been used in the mass production of heat pipe evacuated tubular collectors. High solar performance (α=0.93~0.95, (353 K)=0.04~0.06) have been obtained on the surface of the absorber.

利用Al-N-O选择性吸收层之间产生的干涉效应,改善吸收表面的光学性能(吸收率α和发射率).通过工艺实验确定了2种不同金属填充因子的双吸收层结构.与多层渐变吸收表面相比双吸收层结构吸收表面具有膜系结构简单、高温下性能稳定、发射率较低等优点.吸收表面的吸收率α为0.93~0.95,发射率(353K)为0.04~0.06.

 
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