So the Mg2Si particles reinforced aluminum matrix composites were in situ fabricated with 20wt% weight fraction.

In 6009 alloys,spherical Mg_2Si is the dominant strengthing phase.

The Mg_2Si particle reinforced hypereutectic Al-Si alloy in-situ composites are manufactured by liquid pouring.

Research progress of intermetallic compound Mg_2Si is reviewed with focusing on its properties,fundamental researches and applications.

Based on theories of grains size and dense packing,our research took oil-well cement with high-resistance to sulfur,Jiahua G,and hematite as basic materials and prepared a kind of cement slurry with density varying from 2.

The paper summarizes the formation,movement model of the debris and grain,the condition and mechanism of the oxides formation in the course of thermal wear of the metal composites.

Characteristics Analysis of Forces on Dispersal Particles in Swirling Flow Field;

Study on relationship between microcosmic fractal dimension of cement particles and macroscopical fluidity of cement;

Multi-scale analysis of acoustic emissions and measurement of particle mass flowrate in pipeline;

SEM analysis of particles and its effects in arc ion plating;

Research on design and application of image analysis system for micro particles;

Influences of vortices on impaction and distribution of small ash particles on rear side surface of boiler tube;