Petrova Sonya, Lazarova Diana, Georgieva Mihaela, Petrova Maria, Dobrev Dimiter, Ditchev Dimitre
Department of Electrochemistry and Corrosion, Institute of Physical Chemistry, Bulgarian Academy of Science, "Academic Georgi Bonchev" Street, Blok 11, 1113 Sofia, Bulgaria.
Department of Chemistry, Technical University of Sofia, 1000 Sofia, Bulgaria.
Materials (Basel). 2025 Jul 20;18(14):3401. doi: 10.3390/ma18143401.
The aim of the study was to develop a suitable pre-treatment (and more specifically, the etching operation) of 3D-printed PET and PETG samples with different filling densities of the inner layers for subsequent electroless metallization. The influence of temperature, etching time, and sodium hydroxide concentration in the etching solution on the deposition rate, adhesion, and composition of Ni-P coatings was determined. The studies show that a high temperature and concentration of the etching solution do not improve the properties of the coating. The etching not only plays an important role in improving adhesion but also affects the composition and thickness of the nickel layer. It was also established how the degree of filling densities of the inner layers affects the uniformity, penetration depth, and thickness of electrolessly deposited Cu and Ni-P coatings on 3D PETG samples.
本研究的目的是开发一种适用于具有不同内层填充密度的3D打印PET和PETG样品的预处理方法(更具体地说是蚀刻操作),以便后续进行化学镀金属。确定了蚀刻溶液中的温度、蚀刻时间和氢氧化钠浓度对Ni-P涂层的沉积速率、附着力和成分的影响。研究表明,蚀刻溶液的高温和高浓度并不能改善涂层性能。蚀刻不仅在提高附着力方面起着重要作用,还会影响镍层的成分和厚度。还确定了内层填充密度的程度如何影响3D PETG样品上化学沉积的Cu和Ni-P涂层的均匀性、渗透深度和厚度。