为了改善纳米化学复合镀的工艺，本文研究了在电磁-超声复合场作用下的纳米

为了改善纳米化学复合镀的工艺，本文研究了在电磁-超声复合场作用下的纳米化学复合镀层的沉积机理。以单面磨砂玻璃为基体，选用pH为4.8的酸性化学镀液，并在20kHz、300W超声波下，改变外加磁场强度，固定粒径20 nm纳米SiC的含量1 g/L，通过系列工艺试验优化获得了复合镀层，对其微观形貌、成分及相组成进行了分析，并通过控制磁场强度和超声波参数、采用时间分步沉积法探讨了化学复合镀的沉积机理。
试验结果表明，磁场辅助下的复合镀层表面致密性和均匀性明显优于未加外场的复合镀层的，而磁场和超声场辅助下的复合镀层表面质量最好，在磁场强度为0.58 T以左右时复合镀层由团聚成球状的颗粒组成，每个球状颗粒约为100nm，大小均匀，弥散分布，颗粒与颗粒之间无明显间隙，镀膜致密，平均膜厚为7 μm，性能较好；最佳的制备纳米化学复合镀工艺为：纳米SiC 1g/L，镀液pH值4.8，施镀温度50 ℃，超声波频率20 KHz，超声波功率300 W，磁场强度为0.58 T，施镀时间50 min；纳米化学复合镀层的硬度比单面磨砂玻璃基体大；磁场的加入使镀层更加非晶化， 而且磁场越大，效果越显著；晶化处理后，镀层颗粒大小均匀，结构致密，由于析氢现象镀层组织仍有少量有空隙或孔洞的存在，同时镀层的硬度有所降低；磁场通过对试样洛伦兹力得镀液中的微粒运动更加剧烈，同时干扰电子的自旋状况使其发生塞曼分裂，从而影响反应系统的熵；超声波震荡产生的机械能，使基体表面活化的同时使把镀液中的Ni+还原沉积在基体表面，复合场下，超声波和磁场相互作用，形成均匀致密的、无孔隙的纳米SiC/Ni-P复合镀层。

結果 (英文) 1:

In order to improve the technology of Nano-composite electroless plating, studied under electromagnetic, ultrasonic composite of Nano-composite coating prepared by deposition mechanism. To single frosted glass for substrate, selection pH for 4.8 of acid chemical plated liquid, and in 20kHz, and 300W ultrasonic Xia, change plus magnetic field strength, fixed grain trail 20 nm nano SiC of content 1 g/l, through series technology test optimization obtained has composite coating, on its micro morphology, and ingredients and the phase composed for has analysis, and through control magnetic field strength and ultrasonic parameter, and used time points step deposition law discussion has chemical composite plated of deposition mechanism.
Test results show that theMagnetic field auxiliary Xia of composite coating surface tight sexual and uniform sexual obviously is superior to is not plus outfield of composite coating of, and magnetic field and ultrasound field auxiliary Xia of composite coating surface quality best, in magnetic field strength for 0.58 t to around Shi composite coating by Reunion into spherical of particles composed, each spherical particles about for 100nm, size uniform, diffusion distribution, particles and particles Zhijian no obviously clearance, plated film tight, average film thick for 7 μ m, performance better; best of preparation Nano chemical composite plated technology for: nano SiC 1g /L, electrolyte pH value of 4.8, applying coating temperature 50 ° c, frequency 20 KHz ultrasonic, ultrasonic power 300 w, magnetic field intensity is 0.58 t, Shi plated time 50 min; Nano chemical composite coating of hardness than single frosted glass substrate big; magnetic field of joined makes coating more non-crystal of, and magnetic field more big, effect more significantly; crystal of processing Hou, coating particles size uniform, structure tight, due to analysis hydrogen phenomenon coating organization still has few has voids or holes of exists, while coating of hardness has reduced; magnetic field through on specimen Lorentz force have plated liquid in the of particles movement more dramatic, while interference electronic of since Rotary situation makes its occurred Zeeman split, Impeding the reaction entropy; mechanical energy of ultrasonic vibrations,Substrate surface while allowing the activation of Ni plating restoring deposited on the substrate surface, composite field, ultrasonic and magnetic field interactions, formation of uniform density, pore-free nano-SiC/Ni-P composite coating.

結果 (英文) 2:

In order to improve the nano-composite plating process, we studied the electromagnetic - Ultrasound deposition mechanism of effect of nano-composite Composite Coatings. With single-sided frosted glass matrix, selection of the acidic pH of 4.8 chemical bath and 20kHz, 300W ultrasound, the changing magnetic field strength, the content of nano-SiC fixed diameter 20 nm 1 g / L, through a series of tests to optimize the process won the composite coating, its morphology, composition and phase composition were analyzed, and by controlling the magnetic field strength and ultrasonic parameters, using the mechanism of a chemical compound deposition time step deposition plating.
The test results show that the composite magnetic field-assisted coating surface and uniformity of the density is not significantly better than the composite coating applied external field, and the magnetic field and the composite coating surface quality is preferably under ultrasonic field, magnetic field strength of about 0.58 T to the agglomeration of the composite layer formed of spherical particles, each of the spherical particles is about 100nm, uniform size, dispersed, no gaps between the particles and the particles, a dense coating has an average thickness of 7 μm, better performance; Best Preparation of nano-composite plating process: nano SiC 1g / L, pH value 4.8 bath, plating temperature 50 ℃, ultrasonic frequency 20 KHz, ultrasonic power 300 W, the magnetic field strength is 0.58 T, plating time 50 min; nano chemical matrix composite coating hardness greater than the one-sided frosted glass; field was added to make the coating more amorphous, and the greater the magnetic field, the effect is more significant; after crystallization treatment, coating uniform particle size, compact structure, due to the phenomenon of hydrogen evolution coating microstructure There is still a small presence of voids or holes, while the hardness decreased; magnetic field through the Lorentz force on the sample was in the bath particle motion is more intense, while the interference of electrons spin conditions to make it happen Zeeman splitting , thereby affecting the entropy of the reaction system; ultrasonic vibration generating mechanical energy, so that the substrate surface activated while the plating solution in the Ni + reducing deposition at the substrate surface, the composite field, ultrasound and magnetic fields interact to form a uniform and dense, non-porous Nano SiC / Ni-P composite coating.

結果 (英文) 3:

In order to improve the process of nanometer chemical composite plating, deposition mechanism of the nano composite coating in the electromagnetic ultrasonic field under the action of the. With one side frosted glass as matrix, the pH acidic chemical 4.8 bath, and in the 20kHz, 300W ultrasonic, change the strength of the applied magnetic field, the content of fixed size of 20 nm nano SiC 1 g/L, through a series of process test method to obtain the composite coating, the microstructure, composition and phase composition were analyzed, and by controlling the magnetic field strength and ultrasonic parameters, using the time fractional deposition method on the deposition mechanism of chemical composite plating. The test results show that,Composite coating of magnetic field assisted composite coating compactness and uniformity is much better than that without external field, and magnetic field and ultrasonic field assisted composite coating surface quality best, in the magnetic field strength of 0.58 T to about composite coating by aggregate into spherical particles, each spherical particles is about 100nm, the size of uniform distribution, dispersion, no obvious gap, between the particles and the particle coating density, average thickness of 7 μ m, performance is better; the best preparing nanometer chemical composite plating: nanometer SiC 1g/L 4.8, pH value of the plating solution, plating temperature 50 ℃, ultrasonic frequency of 20 KHz, ultrasonic power 300 W, the magnetic field strength of 058 T, plating time 50 min; nano composite coating hardness than single frosted glass matrix; magnetic field into the coating is more amorphous, and the magnetic field is, the more obvious effect; the crystallization of treatment, coating uniform particle size, compact structure, the phenomenon of hydrogen evolution there are still some gaps or coating the existence of pore, and the hardness of the coating decreased; the magnetic field by means of sample Lorenz force of particle motion in the plating liquid is more intense, and the situation of electronic jamming spin the split Zeeman occurred, thus affecting the reaction system entropy; mechanical energy generated by the ultrasonic vibration,At the same time so that the substrate surface activation and make the solution of the Ni reduction deposition on the surface of the substrate, composite field, ultrasonic and magnetic interactions, nano SiC/Ni-P composite coating without pore formation of uniform and dense.