Llization carried out from XRD spectra. Within this case the intensity of (0 0 0 1) peak (Figure 8) is also the lowest, which suggests that coatings are additional amorphous. Moreover, lower in boron content material and creation of vacancies can influence this mechanical home.Table five. Measured and recalculated hardness (Equation (1)) of deposited coatings. TM Cr Mo Zr Re HV0.01 3610 390 3250 500 3050 240 2710 540 HV0.01 (Recalculated) 5140 480 4630 680 4480 330 3330 650 HV0.025 2760 190 2330 120 2690 130 1940 210 HV0.025 (Recalculated) 5570 390 4610 270 5540 260 3070 400 HV0.05 2140 120 2170 210 2010 110 1750 60 HV0.05 (Recalculated) 5490 380 5540 660 5150 370 3360 390 500 2405140 480 4630 680 4480 330 3330 Coatings 2021, 11,2760 190 2330 120 2690 130 1940 5570 390 4610 270 5540 260 3070 2140 120 2170 210 2010 110 1750 5490 380 5540 660 5150 370 3360 13 ofDeposited coatings are characterized by relatively higher fracture toughness (K1c). As a result of issues with measurements of indents’ dimension below load ten g for calcuDeposited coatings are characterized by relatively high for zirconium lation K1c, the load 50 g was chosen. Exemplary micrographs of indentsfracture toughness (K1c). Because of troubles with measurements of indents’ 9b, the molybdenum10 g for and molybdenum are shown in Figure 9. As could be observed in Figure dimension beneath load calculation K indentation. was proves Exemplary micrographs of indents for zirconium alloyed layers cracked for the duration of 1c , the load 50 gThisselected. low adhesion of this coating towards the and molybdenum are shown in Figure 9. As might be observed in Figure 9b, the molybdenum substrate. Inside the other instances the dimensions of indents are comparable however the length of to the alloyed layers cracked throughout indentation. This proves low adhesion of this coating the cracks are various. TheIn the other instances the dimensions of indents are comparable however the length of substrate. shortest cracks have been observed for coatings with chromium and the longest forthe cracks are various.the commoncracks had been observed for coatings with chromium rhenium. Determined by The shortest Palmqvist approach [21] the values of fracture toughness and coatings alloyed with Based on the chromium and rhenium are 2.11, for the longest for rhenium. zirconium, popular Palmqvist method [21] the values of fracture toughness Obtained outcomes of K1czirconium, chromium and fracture are two.11, 1.40 and 1.77 MPa m1/2 respectively. for coatings alloyed with are comparable to values of rhenium 1/2 1.40 and toughness commonly used1.77 protective coatings titanium nitrides [11]. It related to values of fracture as MPa m respectively. Obtained benefits of K1c are need to be noted toughness commonly applied as protective coatings titanium nitrides [11]. It must be noted that in Palmqvist system K1c is related to hardness (Equation (two)) and is (two)) and is influenced by influenced by that in Palmqvist process K1c is associated with hardness (Equation somewhat soft Phleomycin MedChemExpress silicon substrate.silicon substrate. fracture toughness of depositeddeposited coatings somewhat soft In addition, On top of that, fracture toughness of coatings may well be influenced by brittle siliconby brittle siliconMPa m1/2(1 MPa m1/2). might be influenced substrate (1 substrate).Figure micrographs of indented (HV0.025) surface (HV0.025) surface of coatings. (a) W-Cr-B, (b) W-Mo-B, (c) onfocal microscope 9. Confocal microscope micrographs of indented of coatings. (a) W-Cr-B, (b) W-Mo-B, (c) W-Re-B W-Re-B and (d) W-Zr-B.
