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Questions related from chee guan Wong
silica / silicon is an unwanted impurity in our recycling process , how can we better remove silica / silicon without usage of chemicals?
30 January 2015 6,946 5 View
After spiking the product samples (SiSiCar M) with alumina ( Sigma-Aldrich 265497-25G) is it normal to see such high amorphous content even though the base line seems flat from the scanned...
13 November 2014 2,222 3 View
We tried using Fedorov's method for analyzing metallic Si content in a mixture of silicon carbide, silicon oxide and silicon but each run gives different results due to operator differences and...
31 March 2014 8,387 4 View
pH of pure DPG is around 4-5, DIW around 5.50, but when both are mixed together in 9 part DIW with 1 part vol DPG the pH drops to 3.49. What could be the explanation for this observed change in pH?
27 March 2014 644 4 View
Should conductivity decrease for mixtures of water and PEG after exposure to atmospheric oxygen? Oxygen should be able to attack the ether bonds in PEG and give rise to increased conductivity,...
11 February 2014 4,827 13 View
I would like to know if there are any recycling methods of spent slurry after slicing silicon ingots using diamond wire sawing.
13 November 2013 7,219 1 View