Effects of B content on wear and corrosion resistance of laser-cladded Co-based alloy coatings

Sample number	Powder(wt%)
B0	Co₃₄Fe₈Cr₂₉Ni₈Si₇
B4	(Co₃₄Fe₈Cr₂₉Ni₈Si₇)₉₆B₄
B6	(Co₃₄Fe₈Cr₂₉Ni₈Si₇)₉₄B₆
B8	(Co₃₄Fe₈Cr₂₉Ni₈Si₇)₉₂B₈
B12	(Co₃₄Fe₈Cr₂₉Ni₈Si₇)₈₈B₁₂
B16	(Co₃₄Fe₈Cr₂₉Ni₈Si₇)₈₄B₁₆

Table 3.

Theoretical amorphous content of specimens

Sample	B0	B4	B6	B8	B12	B16
Content (%)	2.46	35.65	68.86	22.31	10.55	0.97

SEM image of the B0 coating: (a) cross sectional morphology of the coating, (b) magnification of rectangular region B, (c) magnification of rectangular region C, (d) magnification of rectangular region D

Microstructure of the coatings: (a) B0, (b) B4, (c) B6, (d) B8, (e) B12, (f) B16

SEM images and EDS elemental distribution maps of B6 coating

TEM image of the B6 coating: (a) the bright field TEM image, (b) the enlarged morphology of the amorphous phase and crystalline phase boundary in (a)

Cross-section microhardness curves of (Co₃₄Fe₈Cr₂₉Ni₈Si₇)_100–xB_x alloy coatings

Friction coefficient curves of the (Co₃₄Fe₈Cr₂₉Ni₈Si₇)_100–xB_x alloy coatings

Wear loss of the (Co₃₄Fe₈Cr₂₉Ni₈Si₇)_100–xB_x alloy coatings and substrate

Table 4.

EDS analysis in Fig. 9 (wt%)

	Ti	Cr	Fe	Co	Ni	O
A	64.41	1.26	2.78	4.89	5.33	21.33
B	67.22	4.30	1.24	5.95	7.61	13.69

Wear morphology surface of the coatings: (a) B0, (b) B4, (c) B6, (d) B8, (e) B12, (f) B16

Table 5.

The electrochemical parameters of (Co₃₄Fe₈Cr₂₉Ni₈Si₇)_100–xB_x alloy coatings in 3.5 wt% NaCl

Sample	E_corr/mV	I_corr/(A·cm^–2)
B0	–482.034	8.974×10^–5
B4	–419.289	5.846×10^–5
B6	–380.255	7.096×10^–5
B8	–501.733	8.318× 10^–5
B12	–449.567	8.851 × 10^–5
B16	–436.434	8.337 × 10^–5

Polarization curves of (Co₃₄Fe₈Cr₂₉Ni₈Si₇)_100–xB_x alloy coatings

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DOI: https://doi.org/10.2478/msp-2023-0040 | Journal eISSN: 2083-134X (formerly 2083-124X) | Journal ISSN: 2083-1331

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Language: English

Page range: 13 - 23

Submitted on: Dec 11, 2023

Accepted on: Jan 25, 2024

Published on: Apr 2, 2024

Published by: Wroclaw University of Science and Technology

In partnership with: Paradigm Publishing Services

Keywords:

Related subjects:

Materials sciences, other,

Nanomaterials,

Functional and smart materials,

Materials characterization and properties

© 2024 Rong Xia, Kun Zhang, Fengyuan Shu, Xin Zhang, Liying Yan, Cheng Li, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Volume 41 (2023): Issue 4 (December 2023)

Effects of B content on wear and corrosion resistance of laser-cladded Co-based alloy coatings

Figures & Tables

Fig. 1.

Table 1.

Table 2.

Table 3.

Fig. 2.

Fig. 3.

Fig. 4.

Fig. 5.

Fig. 6.

Fig. 7.

Fig. 8.

Fig. 9.

Table 4.

Fig. 10.

Table 5.

Fig. 11.

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