看“真相”不要看“假相 三、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 什么样的样品是好样品? 2
好样品是成功的一半 2 什么样的样品是好样品?
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.instrumont 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'5
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 金相试样制备 “艺术” 浸蚀 观察 5
5 取样 制样 浸蚀 观察 金相试样制备 “艺术
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取样 电火花放电加工 (electric discharge machining) DK7740维接 不州有手厘长有机公间 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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