# Fileset

[1-s2.0-S1359646222006650-mmc1.xlsx](https://mdr.nims.go.jp/filesets/49669ecf-cdd9-4226-a5fb-d3d6f73944ba/download)

## Creator

D. Demirskyi, [T. Nishimura](https://orcid.org/0000-0002-2185-2849), K. Yoshimi, [O. Vasylkiv](https://orcid.org/0000-0002-5041-6130)

## Rights

[In Copyright](http://rightsstatements.org/vocab/InC/1.0/)

## Other metadata

[High-strength, medium entropy Zr-Ta-Nb diboride ceramics](https://mdr.nims.go.jp/datasets/9b5ee658-b8ff-4215-9912-390b533c0af3)

## Fulltext

ZTN_all_data ID Zr Ta Nb a, Å c, Å XRD density Bulk density RD, % Porosity XRD, % Porosity SEM,% Grain size, μm* Oxide, SEM, vol.%ˣ min σ, Mpa σ/density Hardness, GPa KIC, MPa m1/2 Comm. min HV >20 GPa  bad 1 0.8 0.1 0.1 3.153 3.481 6.76 6.74 99.72 0.28 0.32 8.33 0.58 362 54 18.5 4.5  min KIC >4 MPa m1/2  quite bad 2 0.1 0.8 0.1 3.09 3.299 11.25 11.08 98.50 1.50 1.25 9.30 0.17 753 68 27.5 4.7  min σ >700 MPa  good 3 0.1 0.1 0.8 3.097 3.32 7.42 7.36 99.24 0.76 0.75 13.84 0.04 546 74 21.7 4.7  min σ_sp 80 MPa / g/cm3  local max 4 0.66 0.22 0.12 3.1406 3.4452 7.49 7.44 99.30 0.70 0.67 8.87 0.06 864 116 19.6 3.9 low HV    ind. maps 5 0.66 0.12 0.22 3.1416 3.4482 6.99 6.77 96.92 3.08 2.45 13.66 0.37 567 84 18.7 4.1 6 0.22 0.66 0.12 3.101 3.3308 10.31 9.94 96.39 3.61 3.13 13.33 0.34 467 47 26.4 4.2 7 0.12 0.66 0.22 3.093 3.3078 10.45 10.21 97.72 2.28 1.86 11.83 0.53 535 52 25.7 4.3 8 0.12 0.22 0.66 3.0974 3.321 8.05 7.96 98.93 1.07 1.10 8.30 0.17 425 53 23.2 4.3 9 0.22 0.12 0.66 3.1064 3.347 7.83 7.74 98.80 1.20 1.21 13.03 0.31 324 42 23.6 4.3 10 0.333 0.334 0.333 3.1133 3.36657 8.42 8.33 98.87 1.13 1.04 11.12 0.33 357 43 19.6 4.2 1:1:1 11 0.334 0.333 0.333 3.11339 3.36683 8.42 8.24 97.88 2.12 2.21 10.32 0.36 334 41 19.9 4.1 1:1:1 12 0.25 0.5 0.25 3.105 3.3425 9.41 9.32 99.06 0.94 0.24 9.57 0.29 532 57 27.5 4.1 13 0.5 0.25 0.25 3.1275 3.4075 7.81 7.74 99.15 0.85 0.52 7.86 0.13 764 99 18.8 3.5 low HV 14 0.25 0.25 0.5 3.1075 3.35 8.07 8.01 99.28 0.72 0.65 12.12 0.33 346 43 18.5 3.6 15 0.15 0.15 0.7 3.1005 3.33 7.64 7.66 100.32 -0.32 0.12 12.93 0.30 335 44 19.8 4.2 16 0.7 0.15 0.15 3.1445 3.4565 7.10 7.08 99.72 0.28 0.45 10.85 0.91 842 119 17.4 4.5 low HV 17 0.15 0.7 0.15 3.095 3.3135 10.63 10.55 99.28 0.72 0.64 11.40 0.46 345 33 26.4 3.9 18 0.51 0.33 0.16 3.1275 3.4074 8.21 8.17 99.50 0.50 0.54 8.60 0.20 554 68 19.9 4.8 19 1 0 0 3.17 3.53 6.10 6.01 98.53 1.47 1.52 11.76 0.49 420 70 16.6 3.5 20 0 1 0 3.08 3.27 12.52 12.45 99.43 0.57 0.66 8.15 1.16 520 42 25.1 4.5 21 0 0 1 3.09 3.3 6.97 6.86 98.43 1.57 1.52 9.40 0.02 390 57 19.3 4.1 22 0.33 0.51 0.16 3.1113 3.3606 9.36 9.21 98.35 1.65 1.77 18.04 0.01 795 86 28.7 4.6 2nd choice (too heavy??) 23 0.33 0.16 0.51 3.1148 3.3711 7.51 7.32 97.50 2.50 2.62 10.96 0.42 569 78 22.6 4.7 regression: max in strength/sp strength should be near the 0.52-0.32-0.16 composition a 0.52 0.32 0.16 3.1379 3.4449 8.02 7.69 95.91 4.09 3.26 6.74 0.23 834 108 19.5 3.9 too porous b 0.54 0.32 0.14 3.1402 3.4532 8.01 7.92 98.83 1.17 1.20 6.96 0.28 754 95 19.4 3.8 low HV TZN 321 (local maximum) c 0.52 0.33 0.15 3.1385 3.447 8.06 7.99 99.18 0.82 0.52 7.56 0.26 712 89 21.9 4.1 (median strenth see figure 2) d 0.52 0.33 0.15 3.1385 3.447 8.06 7.89 97.98 2.02 1.30 10.46 0.32 712 90 22.1 4.1 e 0.52 0.33 0.15 3.1386 3.447 8.06 7.96 98.80 1.20 0.80 8.53 0.34 712 89 21.6 4.2 f 0.51 0.32 0.17 3.131 3.4412 8.01 7.94 99.13 0.87 0.78 12.84 0.47 673 85 18.9 3.6 low HV g 0.5 0.31 0.19 3.1456 3.3826 7.97 7.88 98.90 1.10 1.19 10.33 0.21 633 80 19.6 3.5 low HV h 0.52 0.33 0.15 3.1385 3.4471 8.06 7.88 97.80 2.20 1.20 8.75 0.19 712 90 21.8 4.3 ID Zr Ta Nb a, Å c, Å XRD density Bulk density RD, % Porosity XRD, % Porosity SEM,% Grain size, μm* Oxide, SEM, vol.%ˣ min σ, Mpa σ/density Hardness, GPa KIC, MPa m1/2 Comm.            * d50 - median size ˣ not detected by XRD