Early stage material quality control directly after crystallization is becoming increasingly sophisticated. It is enabled through the characterization of various material parameters along the silicon ingot/brick side faces. Photoluminescence techniques can provide quantitative measures for example of the important photovoltaic material parameter of bulk lifetime. It can measure this parameter w...

To obtain excellent mechanical properties from large cross-sections of plastic mould steel (SDP1), we conducted multi-directional forging (MDF) to control the microstructure ingots. investigate microstructural evolution SDP1 during MDF, performed hot at 1150 °C using a THP01–500A hydraulic press. The dimensions specimens were Φ38 mm × 80 mm. after was observed under metallographic microscope. F...

Ingot multicrystalline silicon (Mc-Si) needs to be improved in quality and reduced cost compared with Czochralski monocrystalline silicon. A uniform dense quartz nucleation layer was obtained by the electrophoretic deposition of powder on surface wafer. The deposited wafer annealed at 600 °C for 1 h, one side glued crucible. During growth Mc-Si crystal, can play a role. results show that averag...

Transient global simulations were carried out to investigate the effect of argon flow on oxygen and carbon coupled transport in an industrial directional solidification furnace for quasi-single crystalline silicon ingots. Global calculation impurity gas melt was based a fully thermal fields. Numerical results show that rate affects intensity along melt–gas surface, but has no significant patter...

The effect of the hot top height on formation positive and negative macrosegregation patterns, ingot quality, material yield during solidification a 12 MT cast made Cr-Mo-low alloy steel was investigated. A 3D numerical simulation process conducted using finite element modeling. full-size cut off from its center in longitudinal direction, large cross-section sliced into small samples. chemical ...

The wire bow angle is an important factor that affects the shape precision of ingot after diamond sawing process. In this research, angles inside and outside were recorded with a high-speed camera. effects processing parameters such as tension force, feed speed, velocity on analyzed. A numerical simulation model in process presented paper to describe ingot. It was shown smaller than for all par...

The Savannah River National Laboratory has evaluated several options for the disposition of stainless steel (SS)–clad plutonium metal alloy. One technologies under consideration is alloying material with SS. resulting SS-Pu alloy would be a nonproliferable waste form consisting secondary Pu composition region microencapsulated in refractory Two 8-kg ingots were made at SS-1.8Zr-0.4Pu alloys (in...