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2篇 您的检索式:作者名="ChangsongLIU"
    题名 作者 年代 出处 被引量
1Synthesis and Deposition of TiC-Fe Coatings by Oxygen-acetylene Flame Spraying显示文摘A simpler and more convenient method for producing wear-resistant, TiC-reinforced coatings were investigated in this study. It consists of the simultaneous synthesis and deposition of TiC-Fe materials by oxyacetylene flame spraying.Solid reagents bound together to form a single particle are injected into the flame stream where an in-situ reaction occurs. The reaction products are propelled onto a substrate to form a coating. Microstructural analyses reveal that TiC and Fe are the dominant phases in the coatings. The reaction between Ti and C happens step by step along with the reactive spray powder flight, and TiC-Fe materials were mainly synthesized where the spray distance is 125~170 mm. The TiC-Fe coatings are composed of alternate TiC-rich and TiC-poor lamellae with different microhardness of 11.9~13.7 and 3.0~6.0 Gpa, respectively. Submicron and round TiC particles are dispersed within a ductile metal matrix. The peculiar microstructure is thought to be responsible for its good wear resistance, which is better nearly five times than WC-reinforced cermet coatings obtained by traditional oxyacetylene flame spray.ZhiwenLI ChangsongLIU JihuaHUANG ShengYIN 2003Journal of Materials Science & Technology2003,19,2:10
2基于Gabor滤波器特征抽取的字符识别方法显示文摘本文论述了在灰度图像上采用Gabor滤波器对字符识别的新方法。特征通过Gabor滤波器直接从字符图像的灰度级上抽取,并按照其结构进行专门的计算。自适应函数采用Gabor滤波器的输出在低质量的图像上显示较好的特性。为了增强特征抽取的分辨力,从Gabor滤波器输出的正反有效图像上分别构建特征直方图。实验显示,本文的方法对于低质量的打印字符和草写体字符识别具有极好的特性。XuewenWang XiaoqingDing ChangsongLiu 李立章 2005图象识别与自动化2005,,1:0
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