SPring-8, the large synchrotron radiation facility

Inquiry number

SOL-0000001698

Beamline

BL47XU (Micro-CT)

Scientific keywords

A. Sample category	inorganic material
B. Sample category (detail)	metal, alloy
C. Technique	absorption and its secondary process
D. Technique (detail)
E. Particular condition	3D imaging (cf. CT), room temperature
F. Photon energy	X-ray (4-40 keV)
G. Target information	local structure, dislocation, strain, structural change, morphology

Industrial keywords

level 1---Application area	mechanics
level 2---Target
level 3---Target (detail)
level 4---Obtainable information	surface,interface, local structure, crack, crevice
level 5---Technique	imaging

Classification

A80.20 metal ・material, M60.20 X-ray CT

Body text

液体金属ドーピング法を用いたX線CTは，液体金属を粒界に含浸して可視化する手法です。ナノメーターオーダーと現在の最高分解能の放射光CTよりさらに3桁も小さなナノ構造である結晶粒界を、材料内部で3-D観察することができます。図に示したのは，AC4CHアルミニウム鋳造合金における共晶組織部のSi粒子と結晶粒界の構造です。結晶粒界のマクロ構造は低融点金属のGaで粒界を装飾することによって可視化されました。粒界は一部では共晶部に沿って，また一部では共晶部を分けるように複雑に湾曲して存在していることが分かります。

Source of the figure

Original paper/Journal article

Journal title

K. H. Khor, H. Toda, et, Journal of Physics: Condensed Matter, 16 (2004), S3511-S3515

Figure No.

Technique

Source of the figure

No figure

Required time for experimental setup

1 shift(s)

Instruments

Instrument	Purpose	Performance
X線CT装置	物体の内部構造を測定する	空間分解能で約1ミクロン程度

References

Document name
K. H. Khor, H. Toda, et, Journal of Physics: Condensed Matter, 16 (2004), S3511-S3515
小林正和，戸田裕之，他：軽金属学会第108回春期大会講演概要(2005)，p.215-216.
T. Ohgaki, H. Toda, et al. Mater Sci Engng, (2005), in press.
M. Kobayashi, H. Toda, Scripta Mater., to be submitted.

Related experimental techniques

Questionnaire

The measurement was possible only in SPring-8. Impossible or very difficult in other facilities.
This solution is an application of a main instrument of the beamline.

Ease of measurement

Middle

Ease of analysis

Middle

How many shifts were needed for taking whole data in the figure?

Two-three shifts