Great Q: maybe? https://www.researchgate.net/figure/a-MAR-M247Nb-coupon-b-Al-2-O-3-crucible-c-coupon-crucible-used-for-the-isothermal_fig1_270394732 https://ww

Great Q: maybe? https://www.researchgate.net/figure/a-MAR-M247Nb-coupon-b-Al-2-O-3-crucible-c-coupon-crucible-used-for-the-isothermal_fig1_270394732 https://www.researchgate.net/figure/a-MAR-M247Nb-coupon-b-Al...