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Wednesday, August 5, 2020 | History

4 edition of Enhancement of the Tribological Properties of Plasma Sprayed Alumina found in the catalog.

Enhancement of the Tribological Properties of Plasma Sprayed Alumina

Richard Westergard

Enhancement of the Tribological Properties of Plasma Sprayed Alumina

by Richard Westergard

  • 124 Want to read
  • 32 Currently reading

Published by Uppsala Universitet .
Written in English

    Subjects:
  • Material Science,
  • Technology & Engineering,
  • Science/Mathematics

  • Edition Notes

    SeriesComprehensive Summaries of Uppsala Dissertations from the Faculty Science and Technology, 717
    The Physical Object
    FormatPaperback
    Number of Pages23
    ID Numbers
    Open LibraryOL12854528M
    ISBN 109155453236
    ISBN 109789155453237
    OCLC/WorldCa186003937

    Ceramic Al2O3−ZrO2−SiO2 coatings with near eutectic composition were plasma sprayed using hybrid water stabilized plasma torch (WSP-H). The as-sprayed coatings possessed fully amorphous microstructure which can be transformed to nanocrystalline by further heat treatment. The amorphous/crystalline content ratio and the crystallite sizes can be controlled by a specific choice of Author: Jan Medricky, Frantisek Lukac, Stefan Csaki, Sarka Houdkova, Maria Barbosa, Tomas Tesar, Jan Cizek. With three kinds of plasma‐sprayed hydroxyapatite coatings (HACs) prepared, the objectives of this study were (1) to establish the calibration methods for quantitatively measuring the concentration of.

    An energetic approach to the wear behaviour of plasma-sprayed alumina–13% titania coatings A. Rico, M.A. Garrido, E. Otero, J. Rodrı´guez* Departamento de Ciencia e Ingenierı´a de Materiales, Universidad Rey Juan Carlos, Mo´stoles, Madrid, Spain. Erosion Behavior of Plasma Sprayed Alumina and Calcia-Stabilized Zirconia Coatings on Cast Iron Substrate. By N. Krishnamurthy, M.S. Murali, B. Venkataraman and P.G. Mukunda. Submitted: March 24th Reviewed: September 23rd Published: February 24th DOI: /Author: N. Krishnamurthy, M.S. Murali, B. Venkataraman, P.G. Mukunda.

    plasma sprayed coating has a unique microstructure and behaves differently from a comparable monolithic material [8]. Porosity is the basic and key quality characteristics to under-stand the microstructure and properties of thermal spray coat-ings. During . Characteristics of Plasma-Sprayed Ceramic Coating p. Thermally Sprayed Alumina Coatings with Strongly Improved Wear and Corrosion Resistance p. Effect of Post Treatments on the Corrosion Resistance of Plasma Sprayed Duplex Stainless Steel Coating in Salt Water p. Improvement of Plasma-Sprayed Ceramic Coating Properties by Heat.


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Enhancement of the Tribological Properties of Plasma Sprayed Alumina by Richard Westergard Download PDF EPUB FB2

Enhancement of scattering and reflectance properties of plasma-sprayed alumina coatings by controlling the porosity Article in Surface and Coatings Technology April with 30 Reads. Nano-structured alumina (n-Al 2 O 3) powders prepared by spray drying granulation and micro-structured alumina (m-Al 2 O 3) powders by fused-crushed method were used to fabricate Al 2 O 3 reinforced CuAl coatings.

The microstructure and phase composition of the coatings were analyzed, and their tribological properties were investigated in comparison with those of the CuAl by: 3. The objective of this study is to compare the tribological properties of alumina coatings with two different structural scales, a micrometer-sized one manufactured by atmospheric plasma spraying.

The study of the tribological behavior of plasma sprayed coatings (Al 2 O 3, Al 2 O 3 /TiO 2, Al 2 O 3 /TiO 2 /Copper) in dry conditions was carried out in a cylinder/plane configuration. The effect of TiO 2 and copper additions on the properties of coatings were investigated in terms of microhardness and fracture toughness, and were related to the friction behavior and wear by: 5RIPT December Enhancement of scattering and reflectance properties of plasma-sprayed alumina coatings by controlling the porosity J.

MARTHE1, E. MEILLOT1, G. JEANDEL2, F. ENGUEHARD3, J. ILAVSKY4 (1) CEA/DAM, Le Ripault, F Monts, France, +, @d by: Abstract. Plasma sprayed coatings are widely used as wear resistant coatings on a variety of metallic substrates. Alumina (Al2O3), Titania (TiO2) and Alumina-Titania (Al2O3+40%TiO2) ceramic coatings with different coating thicknesses of μm, μm and μm are deposited on AlT6 substrate by Plasma Spray by: 1.

Nanostructured Al2Owt.% TiO2 coatings were prepared by plasma spraying using agglomerated nanocrystalline powders via a spray drying method. The as-sprayed coatings and their worn surface were characterized using scanning electron microscope (SEM). The tribological characteristics were evaluated on block-on-ring configuration.

It is found that that the nanostructured coating exhibited a Author: Wen Kai Liu, Wei Ping Ma, Xue Cheng Lu. Alumina (Al 2 O 3), Titania (TiO 2) and Alumina-Titania (Al 2 O 3 +40%TiO 2) ceramic coatings with different coating thicknesses of μm, μm and μm are deposited on AlT6 substrate by Plasma Spray Technique.

Microstructural, Tribological Properties and Surface Roughness of the coated specimens have been studied forCited by: 1. In the present paper an accurate optimization of the deposition parameters of air plasma sprayed alumina-titania based coatings from commercial nanostructured powders was carried out, to reliably compare wear performance and mechanical properties of conventional and nanostructured coatings.

DOI: /CET   The primary mullitized andalusite powders were spray-dried and heat-treated to improve sprayable capability. Then, mullite coating was deposited by atmospheric plasma spraying and heat treatment was contributed to recrystallization of the amorphous phase present in the as-sprayed mullite coating.

Scanning electron microscopy and x-ray diffraction were used to characterize the Cited by: 8. Abstract. In this study, APS and HVOF processes have been used to prepare alumina (Al 2 O 3) and magnesium spinel (MgAl 2 O 4) coatings designed for insulating electrical characteristics, i.e., dielectric strength and electrical resistance (electrical resistivity) were investigated using different methods: dielectric breakdown test, direct current (DC) measurements, and Cited by: In this paper an adaptive Ni-Mo-Al-Ag-BN composite coating was deposited by plasmaspraying.

Its tribological property from 20°C°C were evaluated by using high temperature tribometer. Scanning electron microscopy and Raman spectroscopy were used to characterize the coating and corresponding wear tracks to determine the lubrication : Jian Liang Li, Hang Li, Dang Sheng Xiong, Yu Juan Ji, Yong Kun Qin.

properties of the ceramic sprayed plasma coating, coating of ceramic material like alumina/chrome oxide on substrate of mild steel was done. Extensive tests were conducted to evaluate wear resistance, fatigue strength, bond strength, hardness etc.

Wear Test Oxide ceramics with improved wear resistance. Keywords: Plasma spraying, Laser post-treatment, Wear resistance, Al2O3, ZrO2 Alumina and stabilized zirconia were plasma sprayed in air using a water-stabilized plasma torch.

Nd-YAG laser was then used for additional treatment of the plasma sprayed coatings. The laser was maintained in a quasi-continual regime and defo.

ENHANCEMENT OF MECHANICAL, MICROSCOPIC AND TRIBOLOGICAL PROPERTIES OF HYBRID METAL MATRIX COMPOSITE REINFORCED WITH ALUMINA, GRAPHITE AND SILICON CARBIDE T. Dileep1, P. Srinivas2 Student (Machine Design), Department of Mechanical Engineering, Gudlavalleru Engineering college, Krishna district, Andhra Pradesh.

alumina grains and pores sizes and the physical and the chemical homogeneity. Effect of surface characteristics on tribological properties of alumina ceramics Surface topography. Friction characteristics (coefficient of friction, wear) are strongly dependent on the type of the lubricationFile Size: 69KB.

better characteristic of plasma coatings in all test criteria’s [5]. In this paper, the microstructures and compositions and of two types of ferrous thermal spray coatings, deposited on Al-alloy substrate using an APS (Atmospheric Plasma Spraying) process, were analysed. Their tribological properties were compared with gray.

Suspension plasma spraying (SPS) has now emerged as an attractive technique to produce fine structured coatings. The process involves suspending a fine sub-micron or nanometric powder in a solvent and injecting the resulting suspension into a plasma flame to overcome the above issue of flowability associated with fine powders [9,10].Axial suspension feeding is a recent advancement in Cited by: 2.

List of figures and Tables List of Figures Figure Conventional plasma spraying process. Figure Arrangements for the plasma spraying Figure View of the atmospheric plasma spraying unit.

Prediction Of Plasma Sprayed Alumina-Titania Coating Deposition Using Neural Computation by Lalitendu Tripathy, has been carried out under my supervision in partial fulfillment of the requirements.

84 M. Milieıka et al. / Lithuanian J. Phys. 49, 81Œ84 () sinterability of plasma sprayed YSZ material is in-creased with the addition of 5wt.% of alumina. 4. Conclusions Thin (30Œ45 „m) YSZ lms (ZrO2Œ8mol% Y2O3) were deposited by means of plasma spray technology.The annealing process of plasma-sprayed 3 mol% yttria stabilized zirconia (3-YSZ) coatings with and without Fe 2 O 3 addition was investigated to evaluate the high temperature tribological performance.

The wear experiments were carried out on a ring-on-plate type reciprocating wear tester at selected temperatures within the range of ° by: 9.T1 - Tribological properties of hot-pressed alumina-CNT composites. AU - An, J. W. AU - You, D. H. AU - Lim, Dae-Soon. PY - /8/1. Y1 - /8/1. N2 - Carbon nanotubes (CNTs) have lately attracted remarkable attention as reinforcements of materials because of their exceptional mechanical and electronic by: