上海交通大学：《材料组织结构表征》课程教学资源（课件讲义）光学显微镜2-金相制备

看真相不要看假相 二、金相试样制备

二、金相试样制备 1 看真相不要看假相

好样品是成功的一半

好样品是成功的一半 2

金相学(metallography) ·Metallography: -A systematic method to examine microstructure of materials (mainly metallic materials) Can also be used to examine ceramics, polymers and semiconductors

金相学(metallography) • Metallography: – A systematic method to examine microstructure of materials (mainly metallic materials) – Can also be used to examine ceramics, polymers and semiconductors 3

Robert Hooke(1635-1703) 于17世纪晚期设计的显微镜 www.instrumoat com.c 图1铁顾石腐刻后直接印制的魏氏组织(1820) Count Alois von Beckh Widmanstattens Π.Π.AHOCOB H.C.Sorby A.Martens F6 F.Osmond Fig's

4 Count Alois von Beckh Widmanstätten П.П. Аносов H.C. Sorby A. Martens F. Osmond Robert Hooke(1635-1703) 于17世纪晚期设计的显微镜

取样 制样 浸蚀 观察 5

5 取样 制样 浸蚀 观察

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取样 nipls.cumm 程到西uu, 7

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取样 电火花放电加工 (electric discharge machining) DK740维接 4可车N1长有B风 图104数控线切割加工原理 1一数控装置：2一滚丝简；3一导轮；4一电极丝；5一工件； 6一喷嘴；7一绝缘板；8一高频脉冲发生器；9一系； 10一工作液：11一步进电机 9

取样 • 电火花放电加工 (electric discharge machining) 9

取样 (a) Microtomy: e Useful for preparing soft materials such as polymer samples. 。 Steel,glass or diamond knives in a microtome can Specimen Specimen holder block Block Specimen cut samples into very thin Knife sections. Knife Cut section Sections (b) (a)Adapted from http://www.me.ust.hk/-meiswu/. Copper Microscope slide (b)From http://blass.com.au/definitions/microtome mesh grid 10

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