Microstructural, Corrosion Behavior and Microhardness of Plasma Sprayed W-Ni Composite Coatings

Morks, Magdi; Fahim, Narges; Kobayashi, Akira

Transactions of JWRI, 2007, 36(2), 45-50

アクセス数:253件（2025-04-22 22:52 集計）

固定URL: https://doi.org/10.18910/9508

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論文情報

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タイトル
Microstructural, Corrosion Behavior and Microhardness of Plasma Sprayed W-Ni Composite Coatings
著者
著者名
Morks, Magdi
著者名
Fahim, Narges
NRID
1000070110773 1000070110773
著者名
Kobayashi, Akira
キーワード等
Plasma Spraying
W-Ni Coatings
Microstructure
Hardness
Corrosion Resistance
抄録
Commercial tungsten powder of average particle size 12 μm has been mixed with 10 Wt. % Ni powder and plasma sprayed on SUS304 stainless steel substrate by using a gas-tunnel type plasma spraying system. W-Ni coatings have been sprayed at different Ar plasma gas flow rates of 120, 150 and 170 l/min and different Ar carrier gas flow rates of 5, 8 and 10 l/min. The microstructure and phase structure of the sprayed coatings were investigated using scanning electron microscope (SEM), X-ray diffraction (XRD) and electron dispersive spectrometer (EDX). Corrosion tests were performed for the sprayed W–Ni coatings in 3.5 % NaCl solution using polarization measurements. It was found that the Ni-W coatings formed at higher Ar-gas flow rate are more resistant to corrosion. A more positive value of the corrosion potential and a lower value of the corrosion current are observed for coatings sprayed at higher Ar-gas flow rate.
出版者
大阪大学接合科学研究所
オオサカ ダイガク セツゴウ カガク ケンキュウジョ
Joining and Welding Research Institute, Osaka University
収録物名
Transactions of JWRI
巻(号)
36(2)
ページ
45-50
刊行年月
2007-12
言語
英語
ハンドルURL
https://hdl.handle.net/11094/9508
DOI
https://doi.org/10.18910/9508
PISSN
03874508
NCID
AA00867058
アクセス権
open access
出版タイプ
Version of Record
カテゴリ
紀要論文 Departmental Bulletin Paper
Transactions of JWRI / Vol.36 No.2 (2007-12)