日本金属学会誌

J. Japan Inst. Metals, Vol. 34, No. 11 (1970),
pp. 1144-1150

Light-Figure Microscope and Its Crystallographic Applications

Jirô Watanabé1, Mikio Yamamoto2, Takashi Tametô3 and Kôji Katô3

1The Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai. Present address: Mining College, Akita University, Akita
2The Research Institute for Iron, Steel and Other Metals, Tohoku University, Sendai
3Union Optical Co., Ltd., Tokyo

Abstract:

``Light-Figure Microscope'' has been newly devised for determining orientations of crystal grains of microscopic size rapidly, accurately and perfectly. The microscope consists of two main parts: one is an optical system which produces a clear-cut light figure in the viewing field of the microscope, and the other a goniometric mechanism which measures the orientation angles. Full accounts are given of the construction of microscope, the principle, procedure and accuracy of the orientation determination with actual examples. It can be applid to crystal grains having the smallest diameter of 15 ∼ 25 μ as well as to large single crystals with an accuracy well within ±0.2° ∼ 0.5°. It can also serve as an usual metallurgical microscope.


(Received 1970/7/17)

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