Effects of The Laser Wavelength on Drilling Process of Ceramic Using Nd:YAG Laser
نویسندگان
چکیده
Laser micro-processing is an enabling technology that facilitates component miniaturization and improved performance characteristics. Alumina ceramic is used in microelectronics in printed circuit fabrication, due to its good dielectric property. Ablation is usually a combination of evaporation and melts expulsion. Material processing with laser is favour because it provides non-contact, low heat input precise method for the formation of small holes with low taper and smooth wall structure. In this study, we report the results of the micro drilling application of alumina ceramic using nanosecond laser for different wavelengths (532 nm and 355 nm) in vacuum and atmosphere environment. The effects of power, wavelength and ambient pressure on crater structure were examined.
منابع مشابه
Effect of Laser Irradiation on Bond Strength of Zirconia Ceramic to Self-Adhesive Resin Cement
Background and Aim: Bonding of zirconia to resin cement is challenging, and the zirconia surface requires surface treatment to yield an acceptable bond strength. This study aimed to evaluate the effect of different surface treatments on the bond strength of zirconia to a resin cement. Materials and Methods: In this in-vitro experimental study, 60 zirconia discs measuring 12 mm in diameter an...
متن کاملبررسی اثر لیزر بر آمادهسازی سطح سرامیک زیرکونیا در استحکام باند برشی به عاج دندان
Background and Aims: Reliable bonding between tooth substrate and zirconia-based ceramic restorations is always of great importance. The laser might be useful for treatment of ceramic surfaces. The aim of the present study was to investigate the effect of laser irradiation on the shear bond strength of zirconia ceramic surface to dentin. Materials and Methods: In this experimental in vitro stu...
متن کاملComparison of the Effect of Nd:YAG Laser and Sandblasting on Shear Bond Strength of a Commercial Ni-Cr Alloy to Porcelain
Introduction: Failures might occur at metal‒porcelain interfaces as a problem with metal‒ceramic restorations even with the application of airborne-particle abrasion technique. This study was undertaken to evaluate the effect of Nd:YAG laser treatment on the bond strength of porcelain fused to metal. Methods: Twenty-four cylindrical specimens (4 mm in diameter and 4 mm in height) were made of ...
متن کاملParametric optimization of Nd:YAG laser microgrooving on aluminum oxide using integrated RSM-ANN-GA approach
Nowadays in highly competitive precision industries, the micromachining of advanced engineering materials is extremely demand as it has extensive application in the fields of automobile, electronic, biomedical and aerospace engineering. The present work addresses the modeling and optimization study on dimensional deviations of square-shaped microgroove in laser micromachining of aluminum oxide ...
متن کاملInvestigation of Effective Parameters on Pulsed Nd:YAG Passive Q-Switched Laser
In this paper, we report the experimental results of a pulsed flash lamped Nd:YAG laser at wavelength of 1064 nm and Qswitched by Cr4+:YAG solid state saturable absorber. We have obtained the output energy (E) and pulse-width ( p τ ) of this laser for various initial transmissions of this saturable absorber. Furthermore, the effect of reflectivity of the output coupler (R), diameter of the rod ...
متن کامل