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16 个结果
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  • 简介:IntheinscriptionsofWesternZhoubronzestherearequantitiesofcalendricaldatarecordingyears,monthsanddays.Ofthemarethosecompletelyindicatingtheyearofking'sreign,themoon,thelunarphase,andthedaydesignatedbytheHeavenlyStemsandEarthlyBranchessystem.TheserecordsareofgreatsignificancetostudyingtheWesternZhoucalendar,establishingthebronzeinscriptioncalendar,andidentifyingthereigningyearsoftheWesternZhoukings.

  • 标签: 铜器铭文 西周 中国 文物考古 皇帝 统治权力
  • 简介:WhataretheoriginsoftheverydistinctiveancientChinesebronzes?ThequestionhaslongbeendebatedamongscholarsandthispaperattemptstoinvestigatethisdifficultanddemandingquestionbyexploringtheearlymetalobjectsdiscoveredthrougharchaeologythroughoutChina.Theterm‘earlymetals’referstoallpre-Shang(pre-16thcenturyBCE)metalobjectsfoundinChinathataremadeofpurecopper(hongtong红铜,Cu),brass(huangtong黄铜,Cu-Zn),arseniccopper(shentong砷铜,Cu-As)andbronze(qingtong青铜).Theterm‘bronzes'(qingtongqi)refersspecificallytothosedistinctivepiecesmadeofcopper-tin(Cu-Sn),copper-lead(Cu-Pb)andcopper-tin-lead(Cu-Sn-Pb)alloys.

  • 标签: 早期金属 铜器 起源 中国 发展道路 文物考古
  • 简介:Thevacuumdiffusionbondingoftitaniumalloytotin-bronzehasbeenstudiedandthefeasibilityandappropriateprocessingparametershavebeeninvestigated.Themaximumtensilestrengthofthejointsis168MPa,andafirmjointisobtained.ThemicrostructureofdiffusionbondedjointhasbeenobservedbySEM.X-rayandEPMA,andthemainfactorsaffectingdiffusionbondinghavebeenanalyzed.TheintermetalliccompoundsTi2CuandTiCuwereformedneartheinterface.Thewidthandquantityoftheintermetalliccompoundincreaseswiththeincreaseofthebondingtime.Theformationoftheintermetalliccompoundsresultsinembrittlementofthejointandthepoorjointproperties.

  • 标签: 钛合金 锡青铜合金 扩散结合
  • 简介:Thebronzeplaquesdecoratedwithanimal,humanorgeometricdesignsweretheornamentsontheleatherbeltsofthenomadicpeople,suchasXiongnu(Hun)andXianbei(Sienpi)inNorthernChinaintheQinandHanDynasties.Theseplaqueshaduniqueregionalandethnicalcharacteristics.Therehavebeenmanydifferentideasontheoriginationofthiskindofplaques.Theauthorplanstogivehisownopinionherebyonthisissue.

  • 标签: 铜器画 起源 远古时期 游牧民族 中国 北部地区
  • 简介:SimulatingTestsfortheHeat-treatmentofAncientBronzeMirrorsHeTangkun何堂坤(InstituieolHislori.ofNaturalScience.AcademiaSinicaBeiji...

  • 标签: ANCIENT BRONZE Heat-treatment SIMULATING TESTS
  • 简介:现在的工作集中于微观结构和免费切的黄磷的机械性质上的空气晒黑的退火的影响合金。合金退火在象空气,真空和氮那样的三种退火的空气被进行。在退火以后,在recystallized谷物尺寸和铅粒子尺寸的可辨别的差别没与不同退火的空气被显得。合金的张力的力量在空中退火了或氮空气比那些的在真空空气退火高。在真空空气在合金的情况中退火了,机械力量被锌的蒸发减少。在在氮并且在空气空气退火的情况中,铅出汗被发生。然而,铅的反的分离被氧化铜层在表面上压制在空中退火了。这氧化铜层在制造过程期间导致收益的减少。因此,在氮空气合金退火以机械力量和收益是有利的。

  • 标签: 退火工艺 机械性能 切割技术 铜合金
  • 简介:TherelationshipbetweenEgyptandPalestinecanbetracedbacktotheChalcolithicAgethankstotheevidenceofcurrentexcavationsintheNileDeltaandSinal.PalestinianpotteryandcastmetalobjectsfromtheDeltasitesofMaadi,MinshatAbuOmar,andelsewherehaveprovedcontactswithPalestineinProtodynastic(NagadaⅡ-Ⅲ)times.TheEgyptianProtodynasticPeriodandDynasty1werecontemporarywiththePalestinianEBⅠandEBⅢ,andreliable

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  • 简介:TherelationshipbetweenEgyptandPalestineduringtheBronzeAgehasbeendiscussedsincethe1940s.FortheperiodoftheMiddleBronzeAge,theproblemisbothchronologicalandinterpretative.TheendoftheMiddleBronzeAgeisfixedbytheinitialmilitaryactivitiesofDynasty18inPalestinearoundtheendofthe16thcenturyBCE.Butthedatesforthebeginningofthisperiodandthetransitionfromonearchaeologicalphasetoanotherarestilldebated.Lackingagenerallyacceptedsolution,thechronologyadoptedhereisthatofDever---thetransitionfromMBⅠtoMBⅡoccurredaround1800BCE,

  • 标签: 巴勒斯坦 埃及 中世纪时期 历史分期 历史考证 政治制度
  • 简介:为了在钨铜成立新电介质陶艺,组织,有名字的公式Ba4PrFe0.5Nb9.5O30被稳固的州的反应方法准备。微观结构和绝缘的性质用粉末X光检查衍射,领域排放扫描电子显微镜,和可变温度电介质被学习测试系统。结果证明陶艺有一个单个阶段并且与=b=的房间属于P4bm的空间组12.4839(3)?,c=3.9409(5)?,V=614.192(2)?3。频率依赖者电介质性质证明陶艺在房间温度有象Debye一样松驰,当温度依赖者电介质性质显示陶艺是relaxor,松驰由于nanopolars和氧空缺时。陶艺作为温度马厩在电子陶艺有潜在的应用多层的陶器的电容器。

  • 标签: 电介质陶瓷 钨青铜结构 介电性能 NB 粉末X射线衍射 场发射扫描电镜