Effect of temperature on deposition of LaPO4 coatings produced by ultrasonic-based coating process on steel substrates

Romankov, S.; Komarov, Sergey V.; Hayashi, Naohito; Ueno, Shunkichi; Kaloshkin, S.D.; Kasai, Eiki

doi:10.1016/j.surfcoat.2008.03.026

Cited by 24 publications

(13 citation statements)

References 10 publications

(11 reference statements)

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“…However, there are some difficulties in fabricating intermetallic coatings on the Al alloys using conventional coating techniques because of considerable differences in the physical properties of the substrate and aluminide phases such as their melting points, bonding properties, and low deposition rates. One of the new methods that could be effectively used for fabrication aluminide coatings is mechanical alloying (MA) [4][5][6][7]. In present paper, the formation of the Ni-Al intermetallic coatings on the Al alloy by MA method was studied.…”

Section: Introductionmentioning

confidence: 99%

Coating of metals with intermetallics by mechanical alloying

Zadorozhnyy

Kaloshkin

Kaevitser

et al. 2011

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Coating of metals with intermetallics by mechanical alloying

Zadorozhnyy

Kaloshkin

Kaevitser

et al. 2011

Journal of Alloys and Compounds

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“…Lanthanum phosphate (LaPO 4 ) is currently attracting considerable interest mainly due to its beneficial physical and chemical properties and finding applications in high temperature proton transfer conductors, thermal barrier coatings and nuclear storage materials [1][2][3]. LaPO 4 can also be applied as catalyst or support material since it exhibits high thermal stability, low water solubility, and good mechanical, thermal and chemical stabilities.…”

Section: Introductionmentioning

confidence: 99%

Ethanol dehydration activity on hydrothermally stable LaPxOy catalysts synthesized using CTAB template

et al. 2011

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Nanocrystalline LaP x O y with various starting P to La ratios from 0.5 to 2.0 catalysts were prepared by a sol-gel method using cetyl trimethylammonium bromide (CTAB) as template. The catalysts were thoroughly characterized by N 2 physisorption, powder X-ray diffraction (XRD), temperature programmed desorption (TPD) of NH 3 , solid state 31 P and 1 H nuclear magnetic resonance (NMR), and transmission electron microscopy (TEM) techniques. XRD results indicate the presence of predominantly monazite LaPO 4 with minor amounts of (B3.0 wt%) rhabdophane LaPO 4 phase in the samples with starting P/La ratios of 1.0 and 1.5. NH 3 -TPD results show an increasing trend in the total acidity with increase in P/La ratio. These catalysts were tested in the selective ethanol dehydration in the temperature range between 250 and 400°C. The catalyst activity (lmol/h/m 2 ) is increased with P/La ratio and the catalyst with highest P/La ratio of 2.0 exhibiting the highest ethanol dehydration activity. The ethanol conversion increased with reaction temperature, reaching 100% at 350°C and remains unchanged at higher temperatures. On the other hand, the ethylene selectivity is also increased up to 350°C and then decreased with further increase of reaction temperature. At a P/La ratio of 2, the CTAB templated LaP x O y catalyst showed higher catalytic activities compared to the LaP x O y by hydrothermal method without any template.

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“…Ball impacts can provide a simple and effective solid-state processing for coating fabrication [1][2][3][4]. The principle of this technique is that a substrate is fixed at the top of the vibration chamber and the balls and powder are loaded into the vibration chamber.…”

Section: Introductionmentioning

confidence: 99%