Summary for copper powder oxidation Discussion
Copper powder from atmospheric oxidation is the focus of this thread. Manish Sarda of Jaipur asks for a way to protect copper powder after annealing/reduction, ideally by soaking it in a material or solution that leaves a coating on each particle after drying. The reply says copper powder can be treated with a tarnish prevention solution, specifically an anti-tarnish product available in India through a plating-chemicals supply house in Chennai. The advice is to let the powder cool to room temperature first, then dip it in the anti-tarnish solution for about 30 seconds, drain it, and dry it normally. The answer does not discuss alternative coatings or test results, but it gives a simple practical process intended to reduce surface oxidation after heat treatment.
Q. We require method to prevent Copper Powder from Atmospheric Oxidation After Annealing/ Reduction? Any material or solution in which Copper Powder can be soaked and then dried leaving a coating on Powder particle can be considered.
Manish Sarda
– Jaipur, India
Mr Manish Sarda,
Copper powder can be treated with a Tarnish prevention solution. This is available in India, in Chennai from a supply house of Plating chemicals. After the powder has reached room temperature , it should be dipped in the Anti Tarnish for 30 seconds, drained and dried normally.
Regards,
Asif Nurie [deceased]
– New Delhi, India
With deep sadness we acknowledge the passing of Asif on Jan 24, 2016