scholarly journals Influence of power density micro-morphology of sputtered Mo films. Estimation by measurement of surface roughness factor.

Shinku ◽  
1991 ◽  
Vol 34 (3) ◽  
pp. 204-207
Author(s):  
Yasushi MAKABE ◽  
Yuko HIROHATA ◽  
Tomoaki HINO ◽  
Toshiro YAMASHINA
Keyword(s):  
Surface Roughness ◽  
Power Density ◽  
Roughness Factor ◽  
Micro Morphology

Experimental Research on Surface Roughness of Ultrasonic Assisted Grinding on 7075 Aluminum Alloy

2021 ◽  
Vol 1047 ◽  
pp. 62-67
Author(s):  
Shen Wang ◽  
Le Tong ◽  
Guang Jun Chen ◽  
Mao Xun Wang ◽  
Bin Dai ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Aluminum Alloy ◽  
Processing Parameters ◽  
7075 Aluminum Alloy ◽  
Machined Surface ◽  
Ultrasonic Assisted Grinding ◽  
Great Performance ◽  
Ultrasonic Assisted ◽  
Conventional Grinding ◽  
Micro Morphology

7075 aluminum alloy is widely used due to its great performance, especially in aerospace area. In this paper, ultrasonic-assisted grinding technology is used to process 7075 aluminum alloy. The data is obtained through experiments, and the surface roughness and morphology of ultrasonic assisted grinding and conventional grinding under different spindle speeds, feed rates, and amplitudes are analyzed. Research has found that the increase in spindle speed and amplitude will improve the quality of the machined surface and reduce the surface roughness by 82.1% and 36%. However, with the increase of feed rate, the surface quality decreased significantly, and the surface roughness increased by 55.6%. The surface micro-morphology of the machined workpiece is observed, and the effects of different processing parameters on the surface micro-morphology are obtained.

A method for measuring the surface roughness factor of metals

1972 ◽  
Vol 12 (5) ◽  
pp. 463-468 ◽  
Author(s):  
M. Pražák ◽  
B. Eremiás
Keyword(s):  
Surface Roughness ◽  
Roughness Factor

Characterizing the Effect of Laser Power Density on Microstructure, Microhardness, and Surface Finish of Laser Deposited Titanium Alloy

2013 ◽  
Vol 135 (6) ◽  
Author(s):  
Rasheedat M. Mahamood ◽  
Esther T. Akinlabi ◽  
Mukul Shukla ◽  
Sisa Pityana
Keyword(s):  
Surface Roughness ◽  
Titanium Alloy ◽  
Power Density ◽  
Surface Finish ◽  
Laser Power ◽  
Optical Microscope ◽  
Laser Power Density ◽  
Grain Structure ◽  
Selection Of

This paper reports the effect of laser power density on the evolving properties of laser metal deposited titanium alloy. A total of sixteen experiments were performed, and the microstructure, microhardness and surface roughness of the samples were studied using the optical microscope (OP), microhardness indenter and stylus surface analyzer, respectively. The microstructure changed from finer martensitic alpha grain to coarser Widmastätten alpha grain structure as the laser power density was increased. The results show that the higher the laser power density employed, the smoother the obtained surface. The microhardness initially increased as the laser power density was increased and then decreased as the power density was further increased. The result obtained in this study is important for the selection of proper laser power density for the desired microstructure, microhardness and surface finish of part made from Ti6Al4V.

scholarly journals Evaluation of Photoresist Image Adhesion Strength Using the Surface Roughness Factor(SRF) of Copper Substrate.

1997 ◽  
Vol 63 (607) ◽  
pp. 643-649 ◽  
Author(s):  
Sohji SAKATA ◽  
Toshio HATSUDA ◽  
Akihiro KAWABE ◽  
Hiromitsu OHNO ◽  
Yuko HIROHATA ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Adhesion Strength ◽  
Copper Substrate ◽  
Roughness Factor

Surface roughness factor measurements of 304 and 316 stainless steels with helium ion irradiation

1981 ◽  
Vol 103 ◽  
pp. 445-449 ◽  
Author(s):  
S. Maeda ◽  
M. Mohri ◽  
M. Hashiba ◽  
T. Yamashina ◽  
M. Kaminsky
Keyword(s):  
Surface Roughness ◽  
Stainless Steels ◽  
Ion Irradiation ◽  
Roughness Factor ◽  
Helium Ion

Effects of Parameters on Surface Roughness of Metal Parts by Selective Laser Melting

2013 ◽  
Vol 834-836 ◽  
pp. 872-875 ◽  
Author(s):  
Qun Qin ◽  
Guang Xia Chen
Keyword(s):  
Surface Roughness ◽  
Power Density ◽  
Selective Laser Melting ◽  
Laser Power ◽  
Processing Parameters ◽  
Laser Power Density ◽  
Laser Melting ◽  
Scanning Velocity ◽  
Metal Parts ◽  
Overlap Ratio

The primary goal of this research is the effects of laser process parameters on surface roughness of metal parts built by selective laser melting. The main processing parameters used to control the surface roughness of melted layers are laser power, scanning velocity and overlap ratio. In our work, an orthogonal experimental design was employed to find the changing rules of the surface roughness through changing SLM processing parameters. The results show that the overlap ratio is the most important factor to affect the surface roughness. When the overlap ratio is below 50%, the surface roughness value of melted layers will decrease with laser power density increasing. When the overlap ratio is higher than or equal to 50%, the surface roughness value increases with the laser power density increasing. The optimal parameters of laser power 143W, scanning velocity 5m/min and overlap ratio 30% can be used to achieve melted layers with the best surface quality in our experiments, and the roughness value increases with slicing thickness increasing and the surface bias angle decreases.

Surface roughness factor of anodic oxide layer for electrolytic capacitors

2003 ◽  
Vol 82 (2) ◽  
pp. 331-334 ◽  
Author(s):  
Han-Jun Oh ◽  
Gyeong-Su Park ◽  
Jung-Gu Kim ◽  
Yongsoo Jeong ◽  
Choong-Soo Chi
Keyword(s):  
Surface Roughness ◽  
Oxide Layer ◽  
Anodic Oxide ◽  
Roughness Factor ◽  
Electrolytic Capacitors ◽  
Anodic Oxide Layer

Effects of Incident Angle on Microstructure of Ni-Cr Film Deposited by PVD

2008 ◽  
Vol 373-374 ◽  
pp. 184-187
Author(s):  
Ying Chun Shan ◽  
Jiu Jun Xu ◽  
Xiao Dong He ◽  
Ming Wei Li
Keyword(s):  
Surface Roughness ◽  
Packing Density ◽  
Critical Incident ◽  
Physical Vapor Deposition ◽  
Kinetic Monte Carlo ◽  
Incident Angle ◽  
Roughness Factor ◽  
Initial Location ◽  
Shadowing Effect ◽  
Cr Film

A 2D kinetic Monte Carlo (KMC) simulation has been applied to study the microstructure of Ni-Cr film deposited by physical vapor deposition (PVD) for variable incident angle. In the KMC method, two phenomena were incorporated: adatom-surface collision and adatom diffusion, the interaction between atoms was described by embedded atom method and jumping energy was calculated by molecular statics calculations, initial location of adatom was located by Momentum Scheme. The results reveal that there exists critical incident angle, which is 35˚ for Ni-Cr thin film. When incident angle is less than 35˚, incident angle have less affect on surface roughness factor and packing density, compact films with smooth surface are obtained, their surface roughness factor is bellow 1.12 and packing density is more than 99.6%. However, when incident angle is more than 35˚, surface roughness factor increases quickly and packing density decreases sharply with incident angle increasing: surface roughness factor increase to 1.5 and 2.3 for incident angle of 45˚ and 60˚ respectively, packing density is below 99% and 96% accordingly. Which reveal that the self-shadowing effect emphasizes with incident angle increasing when the incident angle is more than 35˚.

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