本文選題：功率超聲-脈沖電沉積 + Ni-TiN納米復(fù)合鍍層　； 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：納米復(fù)合鍍層是將特征維度尺寸為1-100 nm(即納米數(shù)量級(jí))的不溶性固體顆粒鑲嵌于基體金屬中形成的金屬基納米復(fù)合材料。從性能上講,納米復(fù)合鍍層中存在一定數(shù)量的納米顆粒,而納米顆粒自身具有許多獨(dú)特的物理化學(xué)性能,這使得納米復(fù)合鍍層表現(xiàn)出諸多優(yōu)異的性能,包括硬度、耐腐蝕性能、耐磨性能、抗高溫氧化性能以及電、光催化性能等。近年來(lái)納米復(fù)合鍍層受到各界廣泛的關(guān)注和研究。由于Ni-TiN納米復(fù)合鍍層具有諸多優(yōu)良的性能,如硬度高、較好的耐磨性能、耐腐蝕性能以及高致密度等,在金屬表面性能的改善方面得到許多應(yīng)用。因此,對(duì)Ni-TiN納米復(fù)合鍍層進(jìn)行深入研究具有重要意義。隨著功率超聲技術(shù)和電化學(xué)沉積方法在制備納米鍍層技術(shù)的發(fā)展,近年來(lái),國(guó)內(nèi)外有關(guān)學(xué)者開(kāi)始將功率超聲技術(shù)和電化學(xué)沉積法結(jié)合起來(lái),開(kāi)展了超聲輔助電沉積制備納米晶體和納米鍍層的初步研究。但相關(guān)研究還處于試驗(yàn)研究階段。綜上所述,開(kāi)展超聲場(chǎng)與電場(chǎng)耦合沉積制備復(fù)合鍍層顯得尤為重要。本文通過(guò)功率超聲-脈沖電沉積技術(shù)制備N(xiāo)i-TiN納米復(fù)合鍍層,深入研究超聲場(chǎng)和電場(chǎng)復(fù)合沉積作用機(jī)理。另外,還對(duì)沉積所需的裝置及復(fù)合鍍液配方進(jìn)行研究;同時(shí),對(duì)制備N(xiāo)i-TiN納米復(fù)合鍍層過(guò)程中影響復(fù)合鍍層性能的主要因素(TiN納米顆粒濃度、陰極電流密度、脈沖電源占空比、超聲波功率)進(jìn)行了研究,通過(guò)正交實(shí)驗(yàn)分析,確定出功率超聲-脈沖電沉積制備N(xiāo)i-TiN納米復(fù)合鍍層的最佳工藝參數(shù);此外,還利用掃描電鏡(SEM)、顯微硬度計(jì)、摩擦磨損試驗(yàn)機(jī)、高分辨電子顯微鏡等對(duì)復(fù)合鍍層性能進(jìn)行較為全面的觀察測(cè)試(顯微硬度、結(jié)合力、耐腐蝕性能、耐磨損性能)。以期待為其它類(lèi)型金屬基納米復(fù)合鍍層的制備奠定理論與技術(shù)基礎(chǔ),拓展納米復(fù)合材料的進(jìn)一步研究與應(yīng)用內(nèi)容。
[Abstract]:Nanometer composite coating is a kind of metal matrix nanocomposite material, which is composed of insoluble solid particles with characteristic dimension of 1-100 nm (nanometer order of magnitude) embedded in the matrix metal.In terms of properties, there are a certain number of nano-particles in nano-composite coatings, while nano-particles have many unique physical and chemical properties, which makes nano-composite coatings exhibit many excellent properties, including hardness and corrosion resistance.Wear resistance, high temperature oxidation resistance and electrical, photocatalytic properties.In recent years, nanocomposite coatings have received extensive attention and research.Ni-TiN nanocomposite coatings have been widely used in improving the surface properties of metals due to their excellent properties such as high hardness, good wear resistance, corrosion resistance and high density.Therefore, it is of great significance to study the Ni-TiN nanocomposite coatings.With the development of power ultrasonic technology and electrochemical deposition technology, in recent years, scholars at home and abroad began to combine power ultrasonic technology with electrochemical deposition.The preparation of nanocrystalline and nanocrystalline coatings by ultrasonic assisted electrodeposition was studied.But the related research is still in the experimental stage.To sum up, it is very important to develop the coupling deposition of ultrasonic field and electric field to prepare composite coatings.In this paper, Ni-TiN nanocomposite coatings were prepared by power ultrasonic and pulsed electrodeposition, and the mechanism of ultrasonic field and electric field composite deposition was studied.In addition, the equipment needed for deposition and the formula of composite plating solution were studied, and the main factors affecting the properties of Ni-TiN nanocomposite coating, such as concentration of tin nanoparticles, cathodic current density, duty cycle ratio of pulse power supply, were also studied.Ultrasonic power) has been studied, and the optimum technological parameters for preparing Ni-TiN nanocomposite coating by power ultrasonic pulse electrodeposition have been determined by orthogonal experimental analysis. In addition, the SEM, microhardness meter, friction and wear tester have also been used.The properties of composite coatings were observed and tested by high resolution electron microscope (microhardness, adhesion, corrosion resistance and wear resistance).It is expected to lay a theoretical and technical foundation for the preparation of other types of metal-based nanocomposite coatings and to expand the further research and application of nanocomposites.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類(lèi)號(hào)】：TQ153

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