YSZ atmospheric plasma coating method for improved high temperature corrosion and wear resistance
- PDF / 852,146 Bytes
- 5 Pages / 595.22 x 842 pts (A4) Page_size
- 57 Downloads / 201 Views
DOI 10.1007/s12206-020-0815-y
Journal of Mechanical Science and Technology 34 (9) 2020 Original Article DOI 10.1007/s12206-020-0815-y Keywords: · Yttria stabilized zirconia · High temperature corrosion · Plasma · Floating process · High hardness
Correspondence to: Hong Gun Kim [email protected]
YSZ atmospheric plasma coating method for improved high temperature corrosion and wear resistance Jong-Kweon Lee1,2 and Hong Gun Kim2,3 1
2
Product Development Division, Sewon Hardfacing Co., Ltd., Wanju 55323, Korea, Department of Car3 bon Convergence Engineering, Jeonju University, Jeonju 55069, Korea, Department of Mechanical & Automotive Engineering, Jeonju University, Jeonju 55069, Korea
Abstract
Citation: Lee, J.-K., Kim, H. G. (2020). YSZ atmospheric plasma coating method for improved high temperature corrosion and wear resistance. Journal of Mechanical Science and Technology 34 (9) (2020) ?~?. http://doi.org/10.1007/s12206-020-0815-y
Received April 29th, 2020 Revised
The yttria stabilized zirconia (YSZ) ceramic coating of feed rollers exposed to the high temperature environment used in the floating process for display panel glass manufacturing has high hardness, low porosity and no cracking in the high temperature environment. To obtain such properties, which are necessary for glass panel manufacture, analysis of various parameters such as powder particle size, plasma nozzle diameter, powder feeding rate, and coating distance, was carried out. The results demonstrated a hardness of about 800~1019 Hv 0.1, 150 % higher than the general YSZ coating film. It was possible to obtain a dense coated film with a porosity of 1.4 to 3.0 %, which is 50 % lower than the general porosity. The condition where no cracks occur after an 850 °C thermal shock was also found.
July 16th, 2020
Accepted July 17th, 2020 † Recommended by Editor Chongdu Cho
© The Korean Society of Mechanical Engineers and Springer-Verlag GmbH Germany, part of Springer Nature 2020
1. Introduction Due to the rising competition among industries that manufacture display materials, parts, and equipment, there has been significant growth in next-generation technologies in South Korea. Glass substrates are an important material for display devices, and their manufacturing is a prime element that determines the quality of displays. In general, there are two types of products, viz., the unpolished and polished ones. Also, there exist differences between the glass and panel manufacturers. Both floating and fusion processes are usually used as per the production method. The floating process is favorable for mass-production but has a drawback that it requires polishing because molten glass is floated on the surface of liquid tin to produce flat glass [1, 2]. On the other hand, in the fusion process, the molten glass overflows at both sides of the refractory material and fuses at the bottom of the refractory, where it is drawn down without external surface interference. This is advantageous as it facilitates the fabrication of substrates having high surface qualit
Data Loading...
