PRODUCT USE INSTRUCTIONS
Also listed as: Colloidal Silica - Water-Free Applications Note
Refer to the original PDF for tables, figures and page layout.
Page 1\n \n \nProduct Guide \nwww.alliedhightech.com \nAllied High Tech Products, Inc. \nCall for more information: 800.675.1118 \n0.05 µm Water-Free Colloidal Silica \nDate: 07/2021, v1.1 \nRefer to the SDS document for \nadditional safety information. \n \nWater-free colloidal silica (#180-22010) is ideal as a \nfinal polishing solution for water-sensitive materials. \nThe replacement of water with a glycol base inhibits \noxidation of water-sensitive materials during the final \npolishing step (Figure 1), including extended \npolishing times for EBSD. Water-free colloidal silica \nshould be stored at room temperature. \n \nThis final polishing solution provides an excellent surface finish on many water-sensitive \nmaterials, including, but not limited to, those listed in Table 1. It is also important to utilize \npolishing cloths engineered to withstand prolonged exposure to the chemical composition and \nhigh pH level of this solution, such as Chem-Pol, Final A and Final P. \nSince the abrasive can crystalize, do not let the cloth dry out. It is recommended to charge the \ncloth with sufficient water-free colloidal silica prior to polishing to prime and saturate the cloth \nwith suspension so as not to polish dry. The most common dispensing parameters for \nwater-free colloidal silica are 1-second-long pulses at 10 pulses per minute. \nClean the samples before and after polishing by soaking or rinsing them in isopropyl alcohol, \nand drying them with heat or clean air. This removes debris and abrasive particulates, and \nreduces the likelihood of scratches on samples due to abrasive contamination. After use, clean \nthe cloth with sufficient water to remove the solution before storage to prolong cloth life. \nTable 1: Water-Free Colloidal Silica Suspension Uses \nGroup \nMaterial Examples \nRecommended Cloths \nNon-Metallic Materials \nCeramics, Crystals, Minerals, Polymers \nChem-Pol, Final A or Final P \nMetallic Materials \nZinc Coatings, Powder Metals, Some Base Metals \nChem-Pol, Final P \n \nGHS08 \nFigure 1: Zinc coating prepared with (a) water-free colloidal silica suspension and \n(b) standard colloidal silica suspension \na \nb \n