Investigation of the pore-formation process during the chromizing of steel 40Kh by the circulation method

1994 ◽  
Vol 36 (5) ◽  
pp. 237-243
Author(s):  
B. N. Arzamasov ◽  
R. A. Mel'nikov





1991 ◽  
Vol 256 ◽  
Author(s):  
V. Lehmann ◽  
H. Cerva ◽  
U. Gosele

ABSTRACTThis paper presents a model of the microporous silicon formation process which is based on hole depletion due to quantum confinement in the porous structure. This model is compared with the formation of larger porous structures (meso-, macroporous) where hole depletion is generated by a space charge region.



2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Ioan Iacovache ◽  
Sacha De Carlo ◽  
Nuria Cirauqui ◽  
Matteo Dal Peraro ◽  
F. Gisou van der Goot ◽  
...  


2009 ◽  
Vol 14 (8) ◽  
pp. 1377-1382 ◽  
Author(s):  
Na Wang ◽  
Wendi Zhang ◽  
Jipeng Xu ◽  
Bin Ma ◽  
Zongzhi Zhang ◽  
...  


Materials ◽  
2017 ◽  
Vol 10 (2) ◽  
pp. 163 ◽  
Author(s):  
Huibin Zhang ◽  
Xinli Liu ◽  
Yao Jiang


Author(s):  
Masaru Itakura ◽  
Noriyuki Kuwano ◽  
Kensuke Oki

The low temperature phase of Pd5Ce (L-Pd5Ce) has a one-dimensional long period superstructure (1D-LPS) derived from Ll2. The periodic antiphase boundaries (APBs) are parallel to (110) planes and have a shift vector of 1/2[110]. Hereafter, the indices are referred to the basic lattices of Ll2 As insertion of the APB causes a change in composition, such an APB is called “non-conservative”. Then, a domain size M depends upon the Ce concentration in the alloy. It was found that M increases also with temperature. The temperature dependency of M is attributed to a change of the degree of order within the antiphase domains. In this work, morphology of the non-conservative APBs is observed to clarify the formation process of the 1D-LPS.The alloy of Pd-16.7 at%Ce was prepared by arc melting in argon atmosphere. Disc specimens made from the alloy ingot were first held at 985 K for 260 ks and quenched in iced water to obtain the state of M=∞ or Ll2, followed by annealing for various lengths of time. The annealing temperature was 873 K where the equilibrium value for M is about 3 in unit of (110) lattice spacing of Ll2. Observation was carried out using microscopes JEM-2000FX, JEM-4000EX (HVEM Lab., Kyushu Univ.) and JEM-2000EX (Dept. of Mater. Sci. Tech., Kyushu Univ.).



2004 ◽  
Author(s):  
Julia Braverman ◽  
David DeSteno
Keyword(s):  


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