国家标准-选区衍射.pdf

ICS37.02007.180 N 33 中 华 人 民 共 和 国 国 家 标 准 GB/T 18907-2002 透射电子显微镜选区 电子衍射分析方法 Methodofselectedareaelectrondiffraction fortransmissionelectronmicroscopes 2002一12一05发布 2003一05一01实施 中 华 人 民 共 和 匡 国家 质 量 监 督 检 验 检 疫 总 婿 GB/T 18907-2002 目 次 前 言 ·····················································，························································。··…… 皿 1 范围 ···，，·······························································，·········································…… 1 2 原理 ············································································································…… 1 3 仪器设备 ········································································································…… 1 4 试样 ·········，，···································································································…… 1 5 参照样品 ·········································································································…… 2 6 试验方法 ·······································································································…… 2 6.1 仪器准备 ···································································································…… 2 6.2 选区电子衍射谱的获得 .·······················································…… 2 6.3 衍射常数La的测定 ··················，···································································…·…2 7 衍射谱的测量与计算 ········，················································································…·…3 附录A(规范性附录) 纯金与纯铝的晶面间距表 ··… ‘··················································…… 4 附录B(规范性附录) 单晶体的标准衍射谱 ·················。··························