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Abstract Details

(2020) Additive Manufacturing of PGE Standards with a Silica Matrix

Sio CKI, Parsons-Davis T, Lee E, Wimpenny J, Pascall A, Kuntz J, Goodell J, Roberts K, Bandong B & Bennett N

https://doi.org/10.46427/gold2020.2402

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06d: Room 2, Thursday 25th June 06:06 - 06:09

Corliss Kin I Sio View abstracts at 8 conferences in series
Tashi Parsons-Davis View abstracts at 2 conferences in series
Elaine Lee
Josh Wimpenny View all 2 abstracts at Goldschmidt2020 View abstracts at 5 conferences in series
Andrew Pascall
Joshua Kuntz
John Goodell
Kevin Roberts
Bryan Bandong
Neil Bennett View abstracts at 4 conferences in series

Listed below are questions that have been submitted by the community that the author will try and cover in their presentation. To submit a question, ensure you are signed in to the website. Authors or session conveners approve questions before they are displayed here.

Submitted by Charles Magee on Tuesday 23rd June 02:06
Dear Dr Sio, What form do the PGE's take in the sample? Are they micronuggets (like the Atom probe old zircon Pb- see keynote) with a scale that is simply smaller than current lser sampling size, or are thye somehow complexed with the Si-O?
Dear Dr. Magee, That's an excellent question. Although we do not see transient spikes in the time-resolved LA-ICPMS sepctra, nor evidence for a metallic phase during inspection of the samples by SEM, it is far from certain that the PGE's are dissolved in the matrix rather than form homogeneously distributed (at the scale of LA-ICPMS sampling) but hard to detect nanonuggets. If they are dissolved, it is clear from previous work that the PGEs would have to form metastable complexes. It's not known (so far) whether these elements would be retained in the matrix if the sintering duration was longer. It would be desirable to study these samples under the TEM to see if nanonuggets may be present. Cheers, Corliss

Submitted by Charles Magee on Wednesday 24th June 02:55
Dear Dr Sio, What form do the PGE's take in the sample? Are they nanonuggets (like the Atom probe old zircon Pb- see keynote) with a scale that is simply smaller than current laser sampling size, or are they somehow complexed with the Si-O?


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