ASTM F1438-1993(2005) 用扫描隧道显微术法测定气体分配系统元件的表面粗糙度的测试方法

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【英文标准名称】:StandardTestMethodforDeterminationofSurfaceRoughnessbyScanningTunnelingMicroscopyforGasDistributionSystemComponents
【原文标准名称】:用扫描隧道显微术法测定气体分配系统元件的表面粗糙度的测试方法
【标准号】:ASTMF1438-1993(2005)
【标准状态】:现行
【国别】:
【发布日期】:1993
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:F01.10
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:显微术;试验;管道工程系统;气体分配;表面粗糙度
【英文主题词】:Gasdistributionsystems;Microscopicexamination-electronicmaterials;Roughness;Scanningtunnelingmicroscopy;Semiconductorcleanrooms;Stainlesssteel-gasdistributionsystems;Surfaceanalysis-electroniccomponents/devices;Texture;Topogra
【摘要】:TheuseofSTMimagesanddataisforpurposesoftexturalqualityassessmentandcalculationoffiguresofmerit,andforhighpuritygassystemcleanroomcomponents.ThistestmethoddefinesastandarddatapresentationformatandsuggestsfiguresofmeritthatutilizeSTMrsquo;abilitytoanalyzethree-dimensionalsurfacefeatures.1.1Thepurposeofthistestmethodistodefineamethodforanalyzingthesurfacetextureoftheabove-mentionedcomponentsusingascanningtunnelingmicroscope(STM).STMisanoncontactmethodofsurfaceprofilingthatcanmeasurethree-dimensionalsurfacefeaturesinthenanometersizerange,whichcanthenbeusedtorepresentthesurfacetextureortoprovidefiguresofmerit.Applicationofthistestmethod,wheresurfacetextureisusedasaselectioncriterion,isexpectedtoyieldcomparabledataamongdifferentcomponentstested.1.2Limitations:1.2.1ThistestmethodislimitedtocharacterizationofstainlesssteelsurfacesthataresmootherthanRa=0.25[mu]m,asdeterminedbyacontact-stylusprofilometeranddefinedbyANSIB46.1.Themagnificationsandheightscalesusedinthistestmethodwerechosenwiththissmoothnessinmind.1.2.2Intentionaletchingorconductivecoatingofthesurfaceareconsideredmodificationsofthegas-wettedsurfaceandarenotcoveredbythistestmethod.1.2.3Thistestmethoddoesnotcoversteelsthathaveanoxidelayertoothicktopermittunnelingunderthetestconditionsoutlinedin11.3.1.3ThistechniqueiswrittenwiththeassumptionthattheSTMoperatorunderstandstheuseoftheinstrument,itsgoverningprinciples,andanyartifactsthatcanarise.Discussionofthesepointsisbeyondthescopeofthistestmethod.1.4ThevaluesstatedinSIunitsaretoberegardedasthestandard.1.5Thisstandarddoesnotpurporttoaddressallofthesafetyproblems,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.
【中国标准分类号】:J04
【国际标准分类号】:17_040_20
【页数】:10P.;A4
【正文语种】:


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【英文标准名称】:Medicalelectricalequipment--Part2-31:Particularrequirementsforthesafetyofexternalcardiacpacemakerswithinternalpowersource
【原文标准名称】:医用电气设备.第2-31部分:带内置电源的体外心脏起搏器安全专用要求
【标准号】:JIST0601-2-31-2005
【标准状态】:现行
【国别】:日本
【发布日期】:2005-03-25
【实施或试行日期】:
【发布单位】:日本工业标准调查会(JP-JISC)
【起草单位】:TechnicalCommitteeonMedicalEquipment
【标准类型】:()
【标准水平】:()
【中文主题词】:
【英文主题词】:
【摘要】:この規格は,2.1.101に定義する内部電源で駆動する体外式ペースメーカ(以下“機器”という。)の個別安全要求事項を規定する。
【中国标准分类号】:C39
【国际标准分类号】:11_040_01
【页数】:28P;A4
【正文语种】:日语


Product Code:SAE AS7250
Title:Nuts, Self-Locking, Steel, Corrosion and Heat Resistant High Strength, All Metal 1200掳F Use, UN Thread Form
Issuing Committee:E-25 General Standards For Aerospace And Propulsion Systems
Scope: This document covers all metal, self-locking wrenching nuts, plate nuts, shank nuts, and gang channel nuts made from a corrosion and heat resistant steel of the type identified under the Unified Numbering System as UNS S66286 and of 160 ksi tensile strength at room temperature, with maximum test temperature of parts at 1200掳 F.