APAKAH MAKSUD ZONE REFINING dalam CORSICA?
Kawasan lebat
Mencairkan zon adalah kumpulan kaedah yang sama untuk membersihkan kristal, di mana rantau kristal cair sempit, dan zon lebur ini bergerak di sepanjang kristal. Ranting lebur cair padat pepejal di pinggir hadapannya dan meninggalkan bumbung bahan yang lebih murni padat di belakangnya ketika ia bergerak melalui ingot. Kekotoran menumpukan pada cair, dan dipindahkan ke satu hujung jongkong. Penyulingan zon dibangunkan oleh William Gardner Pfann di Bell Labs sebagai kaedah untuk menyediakan bahan-bahan kesucian yang tinggi untuk transistor pembuatan. Penggunaan awalnya adalah pada germanium untuk tujuan ini, tetapi ia boleh diperluaskan kepada hampir mana-mana sistem pelarut larut yang mempunyai perbezaan kepekatan yang ketara antara fasa pepejal dan cecair pada keseimbangan. Proses ini juga dikenali sebagai proses zon apungan, terutamanya dalam pemprosesan bahan semikonduktor.
Definisi zone refining dalam kamus Corsica
Takrif penentuan zon dalam kamus adalah teknik untuk menghasilkan padat kesucian yang melampau, esp untuk digunakan dalam semikonduktor. Bahan, dalam bentuk bar, dicairkan di satu kawasan kecil yang dilalui sepanjang pepejal. Kekotoran menumpukan pada cair dan dipindahkan ke hujung bar.
CORSICA BUKU YANG BERKAIT DENGAN «ZONE REFINING»
Ketahui penggunaan
zone refining dalam pilihan bibliografi berikut. Buku yang berkait dengan
zone refining dan ekstrak ringkas dari yang sama untuk menyediakan konteks penggunaannya dalam kesusasteraan Corsica.
1
Principles of Solidification: An Introduction to Modern ...
Today, however, zone refining as a purification process is used primarily to
produce purified metals and semiconductor compounds, such as GaAs single
crystals for large-area device substrates. Zone refining of Si is still applied
commercially ...
Martin Eden Glicksman,
2010
2
Technology of Si, Ge, and SiC / Technologie Von Si, Ge und SiC
Purification is usually performed by the horizontal one-zone refining process (Fig.
55). Fig. 56a, b shows a schematic representation of the impurity distribution
obtained after zone refining a), and of impurity profiles of crystals (I- -111) b),
grown ...
W. Dietze, E. Doering, P. Glasow,
1983
3
Purification Process and Characterization of Ultra High ...
5.3.2 Zone Refining Zone refining is a good example of a purification technique
thought to be unsuited to the rare earths until the advent of UHV technology and
cold boats. The principle behind zone refining is the phenomenon whereby the ...
Yoshio Waseda, Minoru Isshiki,
2001
Kedar P. Gupta1 and Robert O. Gregory2 Dependence of Silicon Float-Zone
Refining Parameters on Frequency REFERENCE: Gupta, K. P. and Gregory,
R. O., "Dependence of Silicon Float-Zone Refining Parameters on Frequency,"
Silicon ...
Dinesh C. Gupta, ASTM. Committee F. 1 on Electronics,
1983
5
Design systems for VLSI circuits: logic synthesis and ...
Th Zone Refining compaction technique resembles the process of zone refining
used for the purification of crystal ingots [PFAS2]. The zone refining process starts
with an already established crystal ingot This ingot is then slowly pulled through ...
Giovanni DeMicheli, P. Antognetti, Alberto Sangiovanni-Vincentelli,
1987
6
Solidification and Crystallization Processing in Metals and ...
Repeated fractional crystallization with close zones saves time as the processes
at all the zones occur nearly simultaneously with no interruptions for separation
of pure and impure fractions. The extreme process is continuous zone refining, ...
Hasse Fredriksson, Ulla Akerlind,
2012
7
MATERIALS SCIENCE AND ENGINEERING: A FIRST COURSE
7.7 Other Applications of Phase Diagrams One of the important uses of a phase
diagram is in the zone refining of materials. Consider the schematic phase
diagram shown in Fig. 7.15. We need to purify (or refine) A, which has B as the
impurity ...
8
Encyclopedia of Chromatography
Ito, Y. pH-peak-focusing and pH-zone-refining countercurrent chromatography. In
High-Speed Countercurrent Chromatography; Chemical Analysis Series; Ito, Y.,
Conway, W.D., Eds.; Wiley-Interscience: New York, 1996; Vol. 132, 121-175. 3.
Slow rotation Upper vacuum seals Leads to induction coil \ Vertical adjustment
for ' maintaining a stable zone Figure 2. Advanced form of zone refining
employing the floating zone technique. Lichens and their uses These plants are
hotanically ...
10
CdTe and Related Compounds; Physics, Defects, Hetero- and ...
Figure 1 also illustrates that many of the critical impurities such as Cu, Fe, Ni, Co,
Ag, and Au do not segregate very effectively and that on this basis alone,
distillation should be preferred over zone refining. Further support for distillation
over ...