Nanoindentation measurements of combustion CVD Al2O3 and YSZ films

Stollberg, David W.; Hampikian, J.M.; Riester, L.; Carter, W.B.

doi:10.1016/s0921-5093(03)00339-3

Cited by 51 publications

(18 citation statements)

References 17 publications

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“…The techniques are expected to be useful for measurement of the mechanical properties of thin films or local structure of various materials. For example, the nanoindentation tests for MgO [8][9][10][11][12][13][14][15][16][17], TiO 2 [18,19], and YSZ [8,20,21] single crystals have been performed until now. However, there are few attempts to apply the nanoindentation to evaluate the mechanical properties of the nuclear fuels and materials.…”

Section: Introductionmentioning

confidence: 99%

Nanoindentation tests for TiO2, MgO, and YSZ single crystals

Kurosaki

Setoyama

Matsunaga

et al. 2005

Journal of Alloys and Compounds

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Section: Introductionmentioning

confidence: 99%

Nanoindentation tests for TiO2, MgO, and YSZ single crystals

Kurosaki

Setoyama

Matsunaga

et al. 2005

Journal of Alloys and Compounds

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“…Chromia addition by itself did not help improve the properties significantly; however, it could act as a stabilizer for alumina and limit the phase transformations up to 1200°C ( Ref 46,58). Combination of SiO 2 and Al 2 O 3 can help improve high-temperature creep and corrosion resistance ( Ref 44,59,60). The creep measurements on hybrid spray coatings are in progress and will be reported elsewhere.…”

Section: Hot Corrosion Testmentioning

confidence: 99%

Ultrafine Particulate Dispersed High-Temperature Coatings by Hybrid Spray Process

et al. 2009

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Oxide dispersion strengthened alloys (ODS), although not commonly used in coating applications, have long been used for high-temperature structural applications due to their superior creep properties. In this paper, we present the design, synthesis, and characterization of a new class of functionally engineered high-temperature coatings in which ultrafine oxide particulates are dispersed in the matrix alloy to achieve superior creep resistance along with improved high-temperature corrosion and erosion resistance. These coatings were fabricated using a novel technique called ''hybrid spray process''. Hybrid spray technique combines arc spray and high-velocity oxy fuel (HVOF) spray processes; the metallic matrix alloys are fused by the wire arcing component of the process, whereas the ultrafine particles are synthesized in-flight by the HVOF component from liquid precursors. These particulate dispersed hightemperature composite coatings were fabricated using liquid precursors for SiO 2 , Cr 2 O 3 , Al 2 O 3 , and wire feed stock of 55/45 NiCr, in one step. The coatings were then characterized using electron microscopy (SEM/TEM) and thermogravimetric analysis (TGA). High-temperature erosion, oxidation, and corrosion performance of these coatings were also evaluated and compared with 304 stainless steel, arc sprayed NiCr coatings as well as Alloy 625 overlay cladding. The hybrid spray process produced dense coatings with uniform dispersion of the ultrafine oxide particles. Further, these coatings also demonstrated superior corrosion, erosion, and oxidation resistance; SiO 2 particulate dispersion being most effective in terms of high-temperature corrosion resistance.

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“…In other words, the samples coated by the laser technique are significantly more corrosion-resistant than the base materials. 4. Experiments involving oxidation in air, performed with TGA, indicated that laser-processed samples were more oxidation-resistant than were substrates.…”

Section: Research and Developmentmentioning

confidence: 99%

“…Therefore, large thermally induced mechanical stresses are set up in the interface regions. In the past, this problem was circumvented, though with limited technical or commercial success, through techniques such as diffusion coating, functionally gradient coating, and bond coatings via physical vapor deposition (PVD) [1][2][3], chemical vapor deposition (CVD) [4][5][6][7], thermal spraying [8][9][10][11], and weld overlay [12][13] techniques. Techniques such as diffusion coating have proven useful for producing coatings with good elevated-temperature properties.…”

Section: Literature Reviewmentioning

confidence: 99%