Qiao Bin

Growth Simulations and Experiments on Needle-Electrode Electrodeposited Dendritic Crystals

Numerical simulations of crystal growth using an improved diffusion-limited aggregation (DLA) model were performed and their validity verified by comparison with experimentally grown electrodeposited crystals. The shape and growth of the needle-electrode electrodeposited nickel dendrites were studied. The results show that the electrodeposited materials obtained in the experiment are similar to the particle clusters resulting from the simulation; their fractal dimensions are close to one another and the DLA model effectively explains the rules determining growth of the dendritic crystals. Apart from the velocity and concentration of the particles, the combination probability in the DLA model, applied voltage, deposition time and the electrolyte temperature used for electrodeposition are all important. The deposition layers of the simulated particles have significant fractal structure.

The Research on Actuality of Preparation Technology of Atomized Powder by PIM

Powder, as a key ingredient in feed, is essential to the powder injection molding (PIM) process. In this paper, it mainly introduced atomized powder preparation methods: aerosol, water atomized, plasma atomization and laminar atomization.

Application of PM Technology on Manufacturing of Automotive Parts

PM is a kind of advanced molding method of parts, PM production of 60%~70% all of the world are used in automotive industry, the paper mainly introduced application of PM technology on manufacturing of automotive parts. It mainly introduced the application of Ancormax D, sintering hardening, high velocity compaction, powder hot forging, metal injection molding, warm compaction, sintering brazing and spray forming technology.