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首页> 外文期刊>Metallurgical and Materials Transactions B >Development of electroless composite coatings by using in-situ co-precipitation followed by co-deposition process
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Development of electroless composite coatings by using in-situ co-precipitation followed by co-deposition process

机译：通过原位共沉淀然后共沉积工艺开发化学复合涂层

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摘要

This article presents the studies carried out on the in-situ coprecipitation followed by codeposition of Al2O3 and ZrO2 solids along with Al3Zr within electroless Ni-P matrix. The present pioneered route for synthesis of composite electroless coating, Ni-P-X (X=ZrO2-Al2O3-Al3Zr), is developed and studied as a function of concentration of coprecipitation reactants and bath loading factors on coating rate. The coating has been found to grow laterally and vertically to form a continuous layer, and fine second-phase particles, from the coprecipitation reaction, are seen to get entrapped in the Ni-P matrix. The coating rate of the composite coating has been observed to be higher than that of Ni-P alloy coatings for the identical experimental conditions. The morphology, phase analysis, thermal response, and hardness studies of the composite coatings have been reported. This article also includes the characterization of coprecipitated powder obtained. Different analysis methods used in this study include scanning electron microscopy (SEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), energy-dispersive X-ray analysis (EDXA) and differential thermal analysis (DTA).
机译：本文介绍了在化学镀Ni-P基质中原位共沉淀，然后将Al2 O3 和ZrO2 固体以及Al3 Zr一起共沉积的研究。开发并研究了目前合成化学镀层Ni-PX（X = ZrO2 -Al2 O3 -Al3 Zr）的先驱路线。共沉淀反应物的浓度和镀液速率对镀层速率的影响。已经发现涂层在横向和垂直方向上生长形成连续的层，并且从共沉淀反应中看到细小的第二相颗粒被截留在Ni-P基体中。在相同的实验条件下，已观察到复合涂层的涂层速率高于Ni-P合金涂层的涂层速率。已经报道了复合涂层的形态，相分析，热响应和硬度研究。本文还包括对获得的共沉淀粉末的表征。本研究中使用的不同分析方法包括扫描电子显微镜（SEM），X射线衍射（XRD），透射电子显微镜（TEM），能量色散X射线分析（EDXA）和差热分析（​​DTA）。

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  • 来源
    《Metallurgical and Materials Transactions B》 |2005年第1期|23-31|共9页
  • 作者

    S. B. Sharma; R. C. Agarwala; V. Agarwala; K. G. Satyanarayana;

  • 作者单位

    the Production Engineering Department SGGS College of Engineering and Technology 431606 M.S. Nanded India;

    the Metallurgical and Materials Engineering Department Indian Institute of Technology 247667 Roorkee India;

    the Metallurgical and Materials Engineering Department Indian Institute of Technology 247667 Roorkee India;

    the Department of Chemistry Federal University of Parana Curitiba-PR Brazil;

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