Cavitation-resistant TiNi films deposited by using cathodic arc plasma ion plating

He, Ju-Liang; Won, K.W; Chang, Chun-Hao; Chen, K.C; Lin, Hsiu-Hsia

doi:10.1016/s0043-1648(99)00202-1

Cited by 26 publications

(7 citation statements)

References 9 publications

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“…NiTi coatings have been produced by a variety of techniques in recent years. The processes employed for coating application included thermal spraying, [8][9][10][11][12][13] plasma ion plating, 14 magnetron sputtering, 15 explosive welding, 16 laser cladding [17][18][19] and tungsten inert gas (TIG) surfacing process. 20,21 It has been reported that the erosion resistance of NiTi coatings made by laser plasma hybrid spraying was ,40 times as high as that of Ti6Al4V alloy.…”

Section: Introductionmentioning

confidence: 99%

Microstructure formation and properties of HVOF sprayed NiTi coatings prepared from amorphous/nanocrystalline NiTi powders

Verdian

Salehi

Raeissi

2010

Surface Engineering

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NiTi alloys were sprayed on AISI 1045 steel substrate using high velocity oxyfuel process. In this regard, amorphous/nanocrystalline NiTi powders were used as feedstock. The phase composition and microstructure of the coatings were examined by X-ray diffraction and scanning electron microscopy. The results indicated that B2-NiTi (austenite phase), Ni 4 Ti 3 , Ni and NiTiO 3 were present in the coatings. In addition, all sprayed coatings showed high microhardness values (.588 HV0?3). Further investigations showed that with the increase in fuel/oxygen ratio, the oxide content increased and porosity level decreased. Hereon, a dense coating with porosity level of 0?8% and oxide content of 5% was obtained as the optimum coating. Polarisation tests were employed to study the corrosion behaviour of the optimum coating in 3?5%NaCl solution. These tests indicated that the corrosion current density of the optimum coating is comparable to that of NiTi alloys reported in the literature.

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Section: Introductionmentioning

confidence: 99%

Microstructure formation and properties of HVOF sprayed NiTi coatings prepared from amorphous/nanocrystalline NiTi powders

Verdian

Salehi

Raeissi

2010

Surface Engineering

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“…However, the high price and poor machining ability of intermetallic materials limit their use. Coating is a method to reduce the process cost and to extent the applications [6][7][8][9][10][11][12][13]. Compared with other Ti-Ni coating processes such as thermal sprayings and vacuum vapor depositions, gas tungsten arc welding (GTAW) has relative lower equipment cost, easier operation, and higher field applicability which enables it to be a suitable process to overlay the Ti-Ni cladding onto or to repair fixed or huge facilities.…”

Section: Introductionmentioning

confidence: 99%

Gas Tungsten Arc Cladding of Titanium-Nickel Overlays onto the Carbon Steel and Stainless Steel for Cavitation Erosion Resistance

Chen

et al. 2011

KEM

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Gas tungsten arc welding with the TiNi intermetallic filler material was used to weld overlays onto the SUS 304 stainless steel and AISI 1045 medium carbon steel. The composition, hardness and cavitation erosion resistance of overlays on both kinds of steel was compared. The microstructure analysis results show that the elements from substrate materials diluted the overlay and caused the formation of dendrite structures in overlays. The crystalline phases in overlays on SUS 304 are TiNi-B2, TiNi-B19’, TiNi3 and Ti3Ni4, while those in overlay on AISI 1045 are TiNi-B2 and TiNi3. The multiple phase structures, precipitation of hard carbides and oxides formed in the overlays increases the hardness of the overlays 3-fold over the TiNi filler rod and steel substrate. This significantly increases the cavitation erosion resistance of substrate steels. The corrosion resistant overlays also enhance the cavitation erosion corrosion resistance of substrates in corrosive 3.5 wt% NaCl solution.

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“…Therefore, NiTi coatings have experienced a resurgence of interest in the past years. The processes employed for the coating application included vacuum plasma spraying (VPS), 8 plasma ion plating, 9 magnetron sputtering, 10 explosive welding, 11 brazing, 12 laser cladding, [13][14][15] tungsten inert gas or gas tungsten arc welding process. 16 The most used process for application of Ni-Ti coatings is VPS.…”

Section: Introductionmentioning

confidence: 99%

Effect of feedstock particle size on microstructure of APS coatings prepared from mechanically alloyed nickel–titanium powders

Verdian

Salehi

Raeissi

2010

Surface Engineering

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Ni-Ti coatings were deposited using APS process. In this regard, mechanically activated Ni-Ti powders with amorphous/nanocrystalline structure were used. Two different sieved powders, one of nominal size range of (263 to z20 mm) and the other of nominal size of (2125 to z63 mm), were employed in the experiments. The phase composition and microstructure of the coatings were examined by X-ray diffraction, optical microscopy and scanning electron microscopy. The results indicated that for coating produced using finer powder, increasing plasma power has caused severe cracking of the coatings whereas using the minimum power a coating with better quality can be deposited. In contrast, for coating produced using coarser powder, by selecting the medium power a coating with better quality can be deposited. Based on results of X-ray diffraction, the phase composition of coatings consists of NiTi, Ni 4 Ti 3 , Ni and some oxides.

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Cavitation-resistant TiNi films deposited by using cathodic arc plasma ion plating

Cited by 26 publications

References 9 publications

Microstructure formation and properties of HVOF sprayed NiTi coatings prepared from amorphous/nanocrystalline NiTi powders

Microstructure formation and properties of HVOF sprayed NiTi coatings prepared from amorphous/nanocrystalline NiTi powders

Gas Tungsten Arc Cladding of Titanium-Nickel Overlays onto the Carbon Steel and Stainless Steel for Cavitation Erosion Resistance

Effect of feedstock particle size on microstructure of APS coatings prepared from mechanically alloyed nickel–titanium powders

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