NiTi coating formation on Ti for enhanced wear resistance utilizing electron-beam additive manufacturing technique

Wang, Lei; Okugawa, Masayuki; Liu, Yuheng et al.

Surfaces and Interfaces, 2025, 72, 107024

Number of Access:38（2025-09-07 08:58 Counts）

Identifier to cite or link to this item: https://hdl.handle.net/11094/102624

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Title
NiTi coating formation on Ti for enhanced wear resistance utilizing electron-beam additive manufacturing technique
Creator
CreatorName
Wang, Lei
NRID
1000070847160 1000070847160
ORCID
0000-0002-6844-6856 0000-0002-6844-6856
researchmap permalink
masayuki.okugawa masayuki.okugawa
Scopus Author ID
57202824128 57202824128
CreatorName
Okugawa, Masayuki
NRID
1000000966088 1000000966088
ORCID
0000-0003-1790-1844 0000-0003-1790-1844
researchmap permalink
liu-TU liu-TU
Scopus Author ID
56195082800 56195082800
CreatorName
Liu, Yuheng
NRID
1000000633661 1000000633661
ORCID
0009-0008-4612-6393 0009-0008-4612-6393
researchmap permalink
choken choken
Scopus Author ID
55535308400 55535308400
CreatorName
Cho, Ken
NRID
1000060294021 1000060294021
ORCID
0000-0002-7077-0655 0000-0002-7077-0655
researchmap permalink
read0051691 read0051691
Scopus Author ID
47861549600 47861549600
CreatorName
Yasuda, Hiroyuki Y.
NRID
1000030243182 1000030243182
ORCID
0000-0001-8052-1698 0000-0001-8052-1698
researchmap permalink
read0013987 read0013987
Scopus Author ID
7403896013 7403896013
CreatorName
Nakano, Takayoshi
NRID
1000010322174 1000010322174
ORCID
0000-0001-7061-7135 0000-0001-7061-7135
researchmap permalink
YuichiroKoizumi YuichiroKoizumi
Scopus Author ID
57202772340 57202772340
CreatorName
Koizumi, Yuichiro
Subject
Commercially pure Ti
Mechanial properties
NiTi: Coating
Shape-memory alloy
Superelasticity
Wear resistance
Description
Wang L., Okugawa M., Liu Y., et al. NiTi coating formation on Ti for enhanced wear resistance utilizing electron-beam additive manufacturing technique. Surfaces and Interfaces 72, 107024 (2025); https://doi.org/10.1016/j.surfin.2025.107024.
Abstract
Titanium and its alloys are extensively utilized in various industries owing to their high corrosion resistance and excellent strength-to-weight ratio. However, their poor wear resistance limits further applications. The present study developed a novel method to fabricate wear-resistant NiTi coatings on commercially pure titanium (CP-Ti) substrates to overcome this limitation. The process comprises electroplating a pure Ni layer followed by fusion with the CP-Ti substrate by electron beam (EB) scanning. The surface roughness and composition of the coating can be fine-tuned by adjusting the EB irradiation conditions. For example, the average roughness of continuously scanned (CS) coatings is Ra 8.9, while the average roughness of intermittently scanned (IS) coatings is reduced by 60 % compared to CS-coatings. Additionally, the Ni concentration in the IS-coatings can be finely adjusted from 45 at.% to 55 at.% by adjusting EB power. X-ray diffractometry (XRD) revealed that IS-coatings are partially composed of superelastic B2-NiTi phases. Nanoindentation and sliding wear tests demonstrated that the hardness-to-modulus (H/E) ratio and depth recovery ratio (ηd,h) of the IS-coating increased by a factor of 4.7 and 2.9 compared to those of CP-Ti, respectively. Additionally, the specific wear rate (Ws) of the IS-coating was reduced by 80 % compared to CP-Ti. The mechanical properties of the IS-coating were comparable to those of superelastic NiTi alloy. This newly developed method offers potential applications beyond NiTi coatings, enabling the development of various functional coatings for enhanced wear resistance.
Publisher
Elsevier B.V.
Source Title
Surfaces and Interfaces
Volume (Issue)
72
Page
107024
Date of Issued
2025-06-27
Language
English
Handle URL
https://hdl.handle.net/11094/102624
PISSN
24680230
Relation.isIdenticalTo
DOI (Publisher Version)
https://doi.org/10.1016/j.surfin.2025.107024
Access Rights
open access
CopyRight
This article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
oaire:version
Version of Record
Category
学術雑誌論文 Journal Article