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The correlation of wear behaviors and microstructures of graphite-PTFE composites studied by positron annihilation
Yan, FY; Wang WH(王文华); Wei L(魏龙); Wang, WH; Xue, QJ; Wei, L
1996
发表期刊JOURNAL OF APPLIED POLYMER SCIENCE
卷号61期号:7页码:1231-1236
通讯作者ACAD SINICA,INST HIGH ENERGY PHYS,LAB NUCL ANAL TECH,BEIJING 100080,PEOPLES R CHINA
文章类型Article
摘要The correlation between the wear behaviors of graphite-polytetrafluoroethylene (PTFE) composites and their macro- and microscopic structural changes was studied in a wide graphite volume content range of 0 to 50%. It was found that the macroscopic structure of graphite-PTFE composites changes from the state of PTFE-wrap-graphite to the state of detachment between PTFE and graphite powder along with an increase of graphite volume content. The sudden change occurred at the point of graphite volume content of about 40%. In this article the positron annihilation lifetime spectrum was used to detect the properties of microscopic imperfections. The results indicated that the changes of microimperfects of graphite-PTFE composites in size and in concentration are also related to the increase of graphite volume content while the crystallinity of PTFE shows a tendency to increase. The wear behaviors of graphite-PTFE composites corresponded to the physical properties of imperfects in a macro- and microscopic sense and were reflected fairly well by the interfacial properties between crystal and amorphous regions in PTFE. The positron annihilation technique is a useful tool for the study of tribological behaviors of polymers. (C) 1996 John Wiley & Sons, Inc.
学科领域Polymer Science
研究领域[WOS]Polymer Science ; Polymer Science
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语种英语
研究领域[WOS]Polymer Science ; Polymer Science
WOS类目Polymer Science
WOS记录号WOS:A1996UY00200021
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被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/239212
专题多学科研究中心
作者单位中国科学院高能物理研究所
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Yan, FY,Wang WH,Wei L,et al. The correlation of wear behaviors and microstructures of graphite-PTFE composites studied by positron annihilation[J]. JOURNAL OF APPLIED POLYMER SCIENCE,1996,61(7):1231-1236.
APA Yan, FY,王文华,魏龙,Wang, WH,Xue, QJ,&Wei, L.(1996).The correlation of wear behaviors and microstructures of graphite-PTFE composites studied by positron annihilation.JOURNAL OF APPLIED POLYMER SCIENCE,61(7),1231-1236.
MLA Yan, FY,et al."The correlation of wear behaviors and microstructures of graphite-PTFE composites studied by positron annihilation".JOURNAL OF APPLIED POLYMER SCIENCE 61.7(1996):1231-1236.
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