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Investigation on the mechanical properties of sintered porous copper compacts 烧结多孔铜压块力学性能的研究
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.09.001
Yasser M.Z. Ahmed, Mohamed I. Riad, Ahmed I. Zaky, Mohammed Abdel-Aziz, Mohamed M.H. Shalabi
{"title":"Investigation on the mechanical properties of sintered porous copper compacts","authors":"Yasser M.Z. Ahmed,&nbsp;Mohamed I. Riad,&nbsp;Ahmed I. Zaky,&nbsp;Mohammed Abdel-Aziz,&nbsp;Mohamed M.H. Shalabi","doi":"10.1016/j.cpart.2007.09.001","DOIUrl":"10.1016/j.cpart.2007.09.001","url":null,"abstract":"<div><p>In line with recent attention on porous metals having low and medium porosities in the range of 20–50%, this paper studies the effect of porosity on the mechanical properties of sintered copper compacts. Experiments were designed to investigate the effect of porosity, applied stress and sliding velocity on the wear rate of copper compacts, leading to the finding that the effects of both porosity and applied stress of the wear test on the wear rate are approximately similar and higher than that of sliding velocity. The investigation concerning the effect of porosity on compressive strength indicated that the stress–strain curve of high-porosity compact exhibited identifiable ultimate strength points, though low-porosity compact showed distinct stages of elastic plastic behavior.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 391-394"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.09.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76838844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Dynamics of fine particles in liquid–solid fluidized beds 液-固流化床中细颗粒动力学
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.08.001
Dayou Liu, Yuanfang Fu
{"title":"Dynamics of fine particles in liquid–solid fluidized beds","authors":"Dayou Liu,&nbsp;Yuanfang Fu","doi":"10.1016/j.cpart.2007.08.001","DOIUrl":"10.1016/j.cpart.2007.08.001","url":null,"abstract":"<div><p>On the basis of the Local Equilibrium Model (LEM), fine particles with large Richardson–Zaki exponent <em>n</em> show, under certain conditions during bed expansion and collapse, different dynamic behavior from particles with small <em>n</em>. For an expansion process there may be a concentration discontinuity propagating upward from the distributor, and, on the contrary, for a collapse process there may be a progressively broadening and upward-propagating continuous transition zone instead of discontinuity. The predictions of the bed height variation and the discontinuity trace have been validated experimentally.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 363-375"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.08.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87640565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions 纤维填料对聚四氟乙烯复合材料干湿摩擦磨损性能的影响
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/J.CPART.2007.08.003
Huaiyuan Wang, Xin Feng, Yijun Shi, Xiaohua Lu
{"title":"Effects of fibrous fillers on friction and wear properties of polytetrafluoroethylene composites under dry or wet conditions","authors":"Huaiyuan Wang, Xin Feng, Yijun Shi, Xiaohua Lu","doi":"10.1016/J.CPART.2007.08.003","DOIUrl":"https://doi.org/10.1016/J.CPART.2007.08.003","url":null,"abstract":"","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"14 1","pages":"414-419"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75861284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 25
Analysis of liquid bridge between spherical particles 球形颗粒间液桥分析
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.04.006
Fusheng Mu, Xubin Su
{"title":"Analysis of liquid bridge between spherical particles","authors":"Fusheng Mu,&nbsp;Xubin Su","doi":"10.1016/j.cpart.2007.04.006","DOIUrl":"10.1016/j.cpart.2007.04.006","url":null,"abstract":"<div><p>A pair of central moving spherical particles connected by a pendular liquid bridge with interstitial Newtonian fluid is often encountered in particulate coalescence process. In this paper, by assuming perfect-wet condition, the effects of liquid volume and separation distance on static liquid bridge are analyzed, and the relation between rupture energy and liquid bridge volume is also studied. These points would be of significance in industrial processes related to adhesive particles.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 420-424"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.04.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89980012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 31
The Third Asian Particle Technology Symposium (APT 2007): Small Particle Technology 第三届亚洲粒子技术研讨会(APT 2007):小粒子技术
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.10.001
{"title":"The Third Asian Particle Technology Symposium (APT 2007): Small Particle Technology","authors":"","doi":"10.1016/j.cpart.2007.10.001","DOIUrl":"https://doi.org/10.1016/j.cpart.2007.10.001","url":null,"abstract":"","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Page 425"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.10.001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91590292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of promoters on dynamics of gas–solid fluidized bed—Statistical and ANN approaches 促进剂对气固流化床动力学的影响——统计与人工神经网络方法
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.09.002
Y.K. Mohanty , K.C. Biswal , G.K. Roy , B.P. Mohanty
{"title":"Effect of promoters on dynamics of gas–solid fluidized bed—Statistical and ANN approaches","authors":"Y.K. Mohanty ,&nbsp;K.C. Biswal ,&nbsp;G.K. Roy ,&nbsp;B.P. Mohanty","doi":"10.1016/j.cpart.2007.09.002","DOIUrl":"10.1016/j.cpart.2007.09.002","url":null,"abstract":"<div><p>In this study, a bubbling fluidized bed column, 99<!--> <!-->mm in inside diameter and 960<!--> <!-->mm in height, was used to investigate the effect of rod and disc promoters on fluctuation and expansion ratios. Factorial design (statistical approach) and artificial neural network (ANN) models were developed to predict the fluctuation and expansion ratios in this gas–solid fluidized bed with varying gas flow rates, bed heights, particle sizes and densities. The fluctuation and expansion predicted using these statistical and ANN models, for beds with and without promoters, were found to agree well with corresponding experiments. The statistical model was found to be superior to the ANN model due to its ability to take into account both individual and interactive effects. The rod promoters were found to be more effective in reducing bed fluctuation, and in increasing bed expansion at high gas mass velocities.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 401-407"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.09.002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73342232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Author Index to Vol. 5, 2007 2007年第5卷作者索引
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/S1672-2515(07)00141-8
{"title":"Author Index to Vol. 5, 2007","authors":"","doi":"10.1016/S1672-2515(07)00141-8","DOIUrl":"https://doi.org/10.1016/S1672-2515(07)00141-8","url":null,"abstract":"","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Page 429"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1672-2515(07)00141-8","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91590293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Annual Index to Vol. 5, 2007 2007年第5卷年度指数
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/S1672-2515(07)00140-6
{"title":"Annual Index to Vol. 5, 2007","authors":"","doi":"10.1016/S1672-2515(07)00140-6","DOIUrl":"https://doi.org/10.1016/S1672-2515(07)00140-6","url":null,"abstract":"","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 426-428"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S1672-2515(07)00140-6","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91763213","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Industrial mineral powder production in China 中国工业矿粉生产
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.06.006
Shuilin Zheng
{"title":"Industrial mineral powder production in China","authors":"Shuilin Zheng","doi":"10.1016/j.cpart.2007.06.006","DOIUrl":"10.1016/j.cpart.2007.06.006","url":null,"abstract":"<div><p>The recent annual output of major industrial mineral powders in the mainland of China has been more than 100<!--> <!-->million<!--> <!-->t, accompanied by active development of such supporting technology as comminution, classification, separation/purification, and surface modification. In particular, the present paper reviews technologies for preparing ultra-fine particles involving dry and wet processing, modification and composition, calcination of kaolin clay, and processing of spherical/acerous industrial minerals.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 376-383"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.06.006","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82769858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Transport of airborne particulate matters originating from Mentougou, Beijing, China 源自北京门头沟的空气颗粒物的输送
China Particuology Pub Date : 2007-12-01 DOI: 10.1016/j.cpart.2007.07.003
Duoxing Yang , Yongwei Han , Jixi Gao , Jesse Thé
{"title":"Transport of airborne particulate matters originating from Mentougou, Beijing, China","authors":"Duoxing Yang ,&nbsp;Yongwei Han ,&nbsp;Jixi Gao ,&nbsp;Jesse Thé","doi":"10.1016/j.cpart.2007.07.003","DOIUrl":"10.1016/j.cpart.2007.07.003","url":null,"abstract":"<div><p>In this study, a coupled regional air quality modeling system is applied to investigate the time spatial variations in airborne particulate matters (PM<sub>10</sub>), originating from Mentougou to Beijing municipal area in the period of April 1–7, 2004, and the influences of complex terrain and meteorological conditions upon boundary layer structure and PM<sub>10</sub> concentration distributions. An intercomparison of the performance with CALPUFF against the observed data is presented and an examination of scatter plots is provided. The statistics show that the correlation coefficient and STD between the modeled and observed data are 0.86 and 0.03, respectively. Analysis of model results illustrates that the pollutants emitted from Mentougou can be transported to Beijing municipal area along certain transport pathways, and PM<sub>10</sub> concentration distributions show heterogeneity characteristics. Contributions of the Mentougou sources to the PM<sub>10</sub> concentrations in Beijing municipal area are up to 0.1–15<!--> <!-->μg/m<sup>3</sup>.</p></div>","PeriodicalId":100239,"journal":{"name":"China Particuology","volume":"5 6","pages":"Pages 408-413"},"PeriodicalIF":0.0,"publicationDate":"2007-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.cpart.2007.07.003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86826037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
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