TY - JOUR
T1 - Dissolution patterns caused by chemical etching of Al-Co-Cu and Al-Co-Ni decagonal quasicrystals with a HF-HNO3-H2O solution
AU - Saito, Kaichi
AU - Saito, Yûsuke
AU - Sugawara, Shigeo
AU - Shindo, Ryoetsu
AU - Guo, Jung Qung
AU - Tsai, An Pang
PY - 2004/4/1
Y1 - 2004/4/1
N2 - Dissolution patterns essential for Al-Co-Cu and Al-Co-Ni decagonal quasicrystals (d-QCs) have been investigated in detail by chemical etching using a HF-HNO3-H2O solution followed by scanning electron microscopy (SEM) observations. The chemical etching of definite surface areas of the samples, which are either normal or parallel to the tenfold axes, using a solution with HF-HNO3-H2O (1:5:4 in volume ratio; 0°C; 5-10min), produces a large number of microfacet pits of decagonal prismatic shape. In addition, the same etching test in combination with SEM observations was carried out on a deformed sample of the Al-Co-Ni d-QC, which had been subjected to concentrated mechanical stress at an elevated temperature of 850°C by means of the Vickers indentation technique. The morphological features of the resulting micropits and their possible origins are discussed on the basis of results obtained by SEM observations.
AB - Dissolution patterns essential for Al-Co-Cu and Al-Co-Ni decagonal quasicrystals (d-QCs) have been investigated in detail by chemical etching using a HF-HNO3-H2O solution followed by scanning electron microscopy (SEM) observations. The chemical etching of definite surface areas of the samples, which are either normal or parallel to the tenfold axes, using a solution with HF-HNO3-H2O (1:5:4 in volume ratio; 0°C; 5-10min), produces a large number of microfacet pits of decagonal prismatic shape. In addition, the same etching test in combination with SEM observations was carried out on a deformed sample of the Al-Co-Ni d-QC, which had been subjected to concentrated mechanical stress at an elevated temperature of 850°C by means of the Vickers indentation technique. The morphological features of the resulting micropits and their possible origins are discussed on the basis of results obtained by SEM observations.
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U2 - 10.1080/14786430410001663169
DO - 10.1080/14786430410001663169
M3 - Article
AN - SCOPUS:1842630325
VL - 84
SP - 1011
EP - 1020
JO - Philosophical Magazine
JF - Philosophical Magazine
SN - 1478-6435
IS - 10
ER -