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偏光微差干涉衬度(简称DIC)是近十多年来国际上最新型金相研究显微镜采用的附件,它能大大提高组织衬度,对样品表面高差达几百(?)甚至几十(?)具有极佳的鉴别能力,“DIC”基本原理是靠人射光通过双棱镜在斜劈上产生双折射后光线对样品表面的高差引起的相位差(或光程差),从而在物镜主焦面上产生干涉,得到衬映的金相图象。文中列举了淬火马氏体,锡锑巴氏合金及单晶硅等的DIC图象,与明场相比,具有很好的衬度和立体感。
Polarization-perturbed interference contrast (referred to as DIC) is the most recent decade the latest metallurgical research microscope attachment, it can greatly enhance the tissue contrast, the sample surface height up to hundreds (?) Or even dozens of (?) Has excellent discrimination ability. The basic principle of “DIC ” is that the phase difference (or optical path difference) caused by the height difference of the surface of the sample after the birefringence is generated on the wedge through the double prism by the human eye, Thereby interfering with the main focal plane of the objective lens to obtain the metallographic image reflected by the lens. The paper lists the DIC images of quenched martensite, antimony tin antimony paste alloy and monocrystalline silicon. Compared with the bright field, DIC images have good contrast and three-dimensional effect.