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首页> 外文会议>8th Asian Conference on Solid State Ionics: Trends in the New Millennium; Dec 15-19, 2002; Langkawi, Malaysia >STUDIES ON HEAT TREATED CO-Cr_2O_3 AND Ni-Cr_2O_3 ELECTRODEPOSITED SURFACES UNDER TRIBOLOGICAL CONDITIONS
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STUDIES ON HEAT TREATED CO-Cr_2O_3 AND Ni-Cr_2O_3 ELECTRODEPOSITED SURFACES UNDER TRIBOLOGICAL CONDITIONS

机译：摩擦学条件下热处理过的CO-Cr_2O_3和Ni-Cr_2O_3电沉积表面的研究

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摘要

The growing interest in the electrochemically deposited composite coatings is owing to the flexibility of the deposition process and the due to the increasing demand for the highly wear resistant composite coatings. In electrodeposited coatings a second phase is incorporated in the coating matrix like fine tough particles to improve the surface properties. In this work, the surface mechanical behaviour of cobalt and Nickel coatings with dispersion of chromium oxide in the matrix is reported. The effect of heat treatment of these coatings on the surface mechanical properties is also studied. The surface microhardness, wear loss due to rubbing abrasion are studied before and after heat treatment in the range of 100-600℃ and are reported for both the systems. The composite containing 12 % by volume of Cr2O3 in a Co matrix and heat treated at 500- 600℃ were found to exhibit high abrasive resistance. This is attributed to the formation of a glass like layer found in the cobalt matrix. The coatings are found to be highly adherent and uniform and are found to be suitable for high temperature applications.
机译：由于沉积工艺的灵活性以及对高耐磨性复合涂层的需求不断增加，人们对电化学沉积复合涂层的兴趣日益增长。在电沉积涂料中，第二相像精细的坚硬颗粒一样被引入涂料基质中，以改善表面性能。在这项工作中，报道了氧化铬在基体中分散的钴和镍涂层的表面力学行为。还研究了这些涂层的热处理对表面机械性能的影响。在100-600℃的热处理前后研究了表面显微硬度，由于摩擦磨损而造成的磨损损失，并报道了这两个系统。发现在Co基体中含有12体积％的Cr 2 O 3并在500-600℃下热处理的复合物表现出高耐磨性。这归因于在钴基质中发现的玻璃状层的形成。发现该涂层是高度粘附的和均匀的，并且发现适合于高温应用。

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