This study aims to develop a corona discharge process for a surface treating a glass-ceramic, feldspar porcelain, to improve its bonding to a resin cement with a silane-coupling agent. Corona discharge, a type of plasma process, was performed using a custom-made device on a porcelain surface at temperatures ranging from 25 to 300 °C, for specific treatment times in air. The porcelain was then subjected to a post-heat-treatment at 600 °C to condition the surface state. The resulting surface was primed with a silane-coupling-agent followed by cementing using a resin cement to measure the shear bond strength (SBS). To investigate the effect of surface modifications by the corona discharge treatment, the porcelain was characterized by surface roughness, contact angle, and an X-ray photoelectron spectroscopy analyses. The SBS for the corona-discharge-treated porcelain increased with an increase in treatment-temperature and -time, and reached the maximum value at 200 °C and 5 min. The post-heat-treatment improved the bond durability after thermocycling. The SBS for the corona-discharge-treated porcelain was then compared to that of a conventional hydrofluoric-acid-treated one, which showed that the SBSs were comparable. The results of the surface characterizations indicated that the corona discharge treatment generated silanol groups on the porcelain surface giving hydrophilic properties without roughening the surface. It was found that the corona discharge treatment generates silanol groups on the porcelain surface, resulting in an increased SBS. This study is the first to demonstrate that corona discharge treatment is effective for improving bond strength through the modification of the surface of glass-ceramics.

这项研究的目的是开发一种用于对玻璃陶瓷长石瓷进行表面处理的电晕放电工艺，以改善其与硅烷偶联剂与树脂水泥的粘结性。使用定制设备在25至300°C的温度下在瓷器表面上进行电晕放电（一种等离子工艺），在空气中进行特定的处理时间。然后将瓷器在600°C下进行后热处理，以调节表面状态。用硅烷偶联剂对所得表面进行底漆处理，然后使用树脂胶合剂进行胶合以测量剪切粘结强度（SBS）。为了研究电晕放电处理对表面改性的影响，通过表面粗糙度，接触角和X射线光电子能谱分析对瓷器进行了表征。电晕放电处理的瓷器的SBS随着处理温度和时间的增加而增加，并在200°C和5分钟时达到最大值。后热处理改善了热循环后的粘合耐久性。然后将电晕放电处理过的瓷器的SBS与常规氢氟酸处理过的瓷器的SBS进行了比较，这表明SBS具有可比性。表面表征的结果表明，电晕放电处理在瓷器表面上产生了硅烷醇基团，从而给出了亲水性能而没有使表面变粗糙。发现电晕放电处理在瓷器表面上产生硅烷醇基团，导致SBS增加。