3.5 Effect of particle agglomeration on the formation of GaAs scratches During the <br>polishing process, abrasive particles will agglomerate in the polishing medium, which is caused by the combined action of adsorption and repulsion between particles. In order to study how much the agglomeration phenomenon between the abrasive particles will affect the formation of scratches, this paper uses two abrasive particle models with a particle size of 5.0 nm to replace the agglomeration phenomenon in the polishing liquid. The established model is shown in the figure. And carry on the scratch simulation analysis, get the simulation result as shown in the figure. The simulation results are compared with the scratch results of the single abrasive grains with a particle size of 5.0 nm and 10.0 nm.
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