The direct experimental data of constitutional supercooling during the crystal growth of near-stoichiometric lithium niobate by double crucible Czochralski method were observed and the theoretical issues of the critical growth rate were treated based on the stability criterion equation.
本文在用双坩埚提拉法生长近化学计量比LiNbO3晶体的过程中观察到了组分过冷的实验数据,同时根据Tiller-Chalmers稳定性判据公式半定量计算了近化学计量比LiNbO3晶体临界生长速率的理值,得到一般电阻加热双坩埚提拉法生长近化学计量比LiNbO3晶体的临界生长速率为0。
Phenomena of mechanical twinning, constitutional supercooling, inclusions of the stoichiometric LiNbO_3 crystal grown by double crucible Czochralski method were observed and analyzed in this paper.
本文对采用双坩埚提拉法(DCCZ)生长的化学计量比LiNbO3晶体中出现的机械双晶、组分过冷、包裹体等宏观生长缺陷进行了观察和分析。
Numerical simulation of the flow and heat and mass transport of GaAs melt in the liquid encapsulant czochralski growth of GaAs single crystal in a double crucible was carried out using the low-Reynolds number κ-ε turbulence model.
采用低雷诺数κ-ε湍流模型,模拟了双坩埚LEC法砷化镓熔体的流动与传热传质。
double crucible crystal growing apparatus
双坩埚晶体生长装置
Numerical Simulation of LEC Growth of GaAs with a Double Crucible
双坩埚LEC法砷化镓熔体流动与传热传质数值模拟
crucible lining
坩埚衬里, 坩埚内衬
Iridium crucible
GB/T1597-1979铱坩埚
The sample is heated in are-fractory crucible instead of graphite or quartz crucible.
装载试样的坩埚由耐火材料制成,而不用石墨坩埚或石英坩埚。
crucible ,of platinum or of metals of the platinum group
坩埚,铂或铂族金属制
frequency crucible induction melting furnace
频率坩埚感应熔炼炉
pot transfer glass
坩埚中冷却的光学玻璃
high temperature oscillating crucible viscometer
高温振动坩埚式粘度计
Selection of Oxide Crucibles Used for Melting Nb-Based Ultrahigh Temperature Alloys and the Preparation of Inert Coatings on Graphite Crucibles;
Nb基超高温合金熔炼用坩埚的选择及石墨坩埚惰性涂层的制备
Many cauldrons seem to be at least partially magical.
大多数坩埚似乎至少有部分的魔法。
Crucible process: Technique for producing cast or tool steel.
坩埚法: 生产优质钢或工具钢的工艺。
ectrode cold-mold arc melting
自耗电极水冷坩埚电弧熔炼
Made of stainless. Flat ends and easy operation.
该坩埚钳为平头不锈钢，夹持物体方便。
Fuse polassium dichromate (19) in a porcelain crucible.
熔重铬酸钾（19）在瓷坩埚中。
Fuse potassium dichromate (19) in a porcelain crucible.
在瓷坩埚中熔化重铬酸钾（19）。
`The glass in the form of marbles or batch is introduced into the bushing.
把玻璃球或配合料加到坩埚中。
VIM Refining Extra-Low Oxygen Steel using CaO Crucible
用氧化钙坩埚真空感应熔炼超低氧钢