Dear Matthew,
I scanned our SRM α 656 using CoKα Dynamic Beam Optimation machine from 2 to 150 °2θ. https://www.dropbox.com/s/rar6sjepl9g2x2d/ROW.pro?dl=0 Using the same sample model, the derived relative wt% ratio between α and β phases are very similar to that from your CuKα data. Cheers! -- Dr. Xiaodong (Tony) Wang Senior Research Infrastructure Specialist (XRD) Central Analytical Research Facility (CARF) | Queensland University of Technology Address: Level 6, P Block, Gardens Point campus, 2 George St Brisbane QLD 4000 Tel: +61 7 3138 1904 | Mob: 0452 571 680 Email: tony.w...@qut.edu.au | Web: www.qut.edu.au/ife/carf 在 2022-04-30 11:53:46，"Matthew Rowles" <rowle...@gmail.com> 写道： Hi Tony I can't reproduce the certificate values. This is the entire point of my question. Matthew On Fri, 29 Apr 2022, 08:31 iangie, <ian...@126.com> wrote: Dear Mathew, Understood these values are from the SRM certificate. My .pro of the data suggests ~92% alpha, 3% beta, and ~5% Amorphous: https://www.dropbox.com/s/r2l4y0iq7d4baj7/ROW.pro?dl=0 Can you reproduce those values on the certificate? Cheers! -- Dr. Xiaodong (Tony) Wang Senior Research Infrastructure Specialist (XRD) Central Analytical Research Facility (CARF) | Queensland University of Technology Address: Level 6, P Block, Gardens Point campus, 2 George St Brisbane QLD 4000 Tel: +61 7 3138 1904 | Mob: 0452 571 680 Email: tony.w...@qut.edu.au | Web: www.qut.edu.au/ife/carf 在 2022-04-27 15:55:28，"Matthew Rowles" <rowle...@gmail.com> 写道： Yep. The sample is supposed to contain 87.4 wt% alpha-Si3N4, 3.0 wt% beta-Si3N4 and 9.6 wt% amorphous. Matthew On Tue, 26 Apr 2022 at 20:06, Martin Vickers <vickers...@gmail.com> wrote: Just a point of interest you seem to have a few impurity peaks possibly from Si6N8 (COD entry 96-210-2554 seems to match well). it's not a lot but you might want to include that phase in your quantitative calculations. Regards, Martin -- Martin Vickers Dept. of Chemistry, UCL, 20, Gordon Street WC1H 0AJ 020 7679 5592 (or ex 25592)
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