Changes in the CoCr alloys surface relief during plasma electrolytic treatment

International Scientific-Technical Conference on Innovative Engineering Technologies, Equipment and Materials 2018

材料科学;工业技术（总论）

Saleeva, L.R.^4 ; Kashapov, R.N.^1^2 ; Kashapov, L.N.^1^3 ; Kashapov, N.F.^1

Engineering Institute, Kazan Federal University, Kazan

420008, Russia^1

Laboratory of Radiation Physics, Zavoisky Physical-Technical Institute, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan

420029, Russia^2

Laboratory of Continuum Mechanics, Institute of Mechanics and Engineering, FRC Kazan Scientific Center, Russian Academy of Sciences, Kazan

420111, Russia^3

Kazan State Medical University, Kazan

420012, Russia^4

关键词: Cobalt chromes;    Electrolytic process;    Electrolytic treatment;    Impurity element;    Local melting;    Microdischarges;    Surface reliefs;    Treatment methods;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/570/1/012087/pdf
DOI  :  10.1088/1757-899X/570/1/012087

来源: IOP

【 摘 要 】

Development of dentistry is strongly correlated with the new treatment method development and construction of metal, polymer and ceramic materials. Metal-ceramic crown is a common dental prosthesis. The aim of work was determination the causes of the ceramic coating spalling from the cobalt chrome metal frame. It is proposed to replace the standard sandblasting method to plasma electrolytic treatment. The burning of single microdischarges occurs during plasma-electrolytic process. The formation of the microwells and increasing surface roughness observed in cathode mode. This is due to local melting of the surface. The treated surface does not contain impurity elements that can cause the formation of microcracks.