http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Maozhong (검색결과 5 건)
- 무료
- 기관 내 무료
- 유료
-
Sliding Friction and Wear Behavior of C/C Composites Against 40 Cr Steel
Yicheng Ge,Maozhong Yi,Huijuan Xu,Ke Peng,Lin Yang 한국탄소학회 2009 Carbon Letters Vol.10 No.2
In this work, effects of carbon matrix on sliding friction and wear behavior of four kinds of C/C have been investigated against 40 Cr steel ring mate. Composite A with rough lamination carbon matrix (RL) shows the highest volume loss and coefficient of friction, while composite D with smooth lamination/resin carbon matrix (SL/RC) shows the lowest volume loss. The worn surface of composite A appears smooth, whereas that of composite C with smooth lamination carbon (SL) appears rough. The worn surface of composite D appears smooth under low load but rough under high load. Atomic force microscope images show that the size of wear particles on the worn surface is also dependent on the carbon matrix.
-
C<SUB>f</SUB>/C-Cu- New Sliding Electrical Contact Materials
Liping Ran,Maozhong Yi,Ke Peng,Lin Yang,Yicheng Ge 한국탄소학회 2009 Carbon Letters Vol.10 No.2
[ Cf/C-Cu ]composites were fabricated by infiltrating molten Cu into different Cf/C preforms prepared by chemical vapor infiltration, resin impregnation and carbonization. The microstructure and properties of the composites were investigated. The results show that Cu in the composites filled the pores and showed network-like distribution. Compared with homemade J204 brush material and certain grade pantograph slider from abroad, the composites have higher flexural strength and better electrical conductivity. The friction and wear properties of the composites are better than that of J204, and closed to that of the abroad material.
-
Huan Yin,Fenghao Yang,Guangmin Hu,Maozhong Yi 한양대학교 청정에너지연구소 2023 Journal of Ceramic Processing Research Vol.24 No.4
The polycarbosilane derived KD-II SiC fibers were heat treated in argon atmosphere at temperatures from 1000 °C to 1800°C and in oxidation atmosphere at temperatures from 1000 °C to 1500 °C for 1 hour, respectively. The effect of heat treatmenton microstructure of all fibers were characterized by X-ray diffraction, scanning electron microscopy, transmission electronmicroscopy, X-ray photoelectron spectroscopy and Atomic Force Microscopeand, and the tensile strength of fibers wereevaluated by monofilament tensile test and Weibull model. The results reveal that the fibers of heat treatment in argonatmosphere can maintain their original tensile strength (~2.5 GPa) up to the temperature at 1200 °C. After that, their tensilestrength starts to decline, especially when the temperature exceeds 1400 °C a sharp strength degradation is observed. Throughdetailed characterization, we find that the reasons for the strength degradation of fibers heat treatment in argon atmosphereinclude the appearance of surface defects, growth of β-SiC grains and decomposition of SiCxOy amorphous phase. Correspondingly, the fibers heat treated in oxidation atmosphere have lower tensile strength compared with those fibers heattreatment in argon atmosphere at the same temperature. Furthermore, their tensile strength starts to degenerate at 1000 °C,and only 30% of original strength is retained when the temperature reached 1500 °C. Obviously, for fibers heat treatment inoxidation atmosphere, their tensile strength degradation starting temperature is lower and degradation speed is faster thanthose fibers heat treatment in argon atmosphere. This can be attributed to the interface stress existed between silica layer withinternal fibers, the surface cracks caused by the thermal stress and the growth of β-SiC grains.
-
Genetic structure of six cattle populations revealed by transcriptomewide SNPs and gene expression
Wei Wang,Huai Wang,Hui Tang,Jia Gan,Changgeng Shi,Qing Lu,Donghui Fang,Jun Yi,Maozhong Fu 한국유전학회 2018 Genes & Genomics Vol.40 No.7
There are abundant cattle breeds/populations in China, and the systematic discovery of genomic variants is essential for performing the marker assisted selection and conservation of genetic resources. In the present study, we employed whole transcriptome sequencing (RNA-Seq) technology for revealing genetic structure among six Chinese cattle populations according to transcriptome-wide SNPs and gene expression. A total of 68,094 variants consisting of 61,754 SNPs and 6340 InDels were detected and widely distributed among all chromosomes, by which the clear patterns of population structures were revealed. We also found the significantly differential density of variant distribution among genes. Additionally, we totally assembled 15,992 genes and detected obvious differences on the expression profiles among populations. In contrast to genomic variants, the measure of gene expression levels failed to support the expected population structure. Here, we provided a global landscape on the differential expression genes among these cattle populations.
-
Yaqiang Li,Penghui Ren,Yuanhang Zhang,Shengxu Wang,Jinqiu Zhang,Peixia Yang,Anmin Liu,Guangzhao Wang,Zhidong Chen,Maozhong An 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.118 No.-
Finding proper additive to achieve copper superconformal electrodeposition is significantly important. Brilliant Green exhibits excellent suppressing ability to the copper electrodeposition according to electrochemicalanalysis. Meanwhile, 100 mg/L was selected as the optimum value based on the convectiondependentadsorption behavior analysis of Brilliant Green. The interaction among three different additiveswas also investigated by applying chronopotentiometry as well as Brilliant Green compete to absorbon the cathode surface with SPS. Besides, the introduction of Brilliant Green can improve the transport ofcupric ions (Cu2+). The nucleation and growth of copper deposition is 3D diffusion-controlled instantaneousgrowth process at high overpotential but 3D diffusion-controlled mixing growth process at lowoverpotential. The synergistic suppressing mechanism was proposed to explain strong suppressing effectof BG on reduction of Cu2+ and the reaction pathways was studied theoretically. Copper interconnectlayer with high FP values (80.52 % to 84.38 %) was obtained with low SDT (about 28 lm) after electroplatingprocess was optimized. The surface morphology under the influence of Brilliant Green is compactand uniform and the grain size is reduced by Brilliant Green.
ScienceON
스콜라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
