The Role of Microstructure and Surface Finish on the Corrosion of Selective Laser Melted 304L

2018 ◽  
Vol 165 (5) ◽  
pp. C234-C242 ◽  
Author(s):  
Rebecca F. Schaller ◽  
Ajit Mishra ◽  
Jeffrey M. Rodelas ◽  
Jason M. Taylor ◽  
Eric J. Schindelholz
Keyword(s):  
Surface Finish

The Role of Cutter Eccentricity on Surface Finish and Milling Forces

2004 ◽  
Author(s):  
Tony L. Schmitz ◽  
Jeremiah Couey ◽  
Eric Marsh ◽  
Michael F. Tummond
Keyword(s):  
Surface Finish ◽  
Milling Machine ◽  
Time Domain Simulation ◽  
Machined Surface ◽  
Premature Failure ◽  
Series Of Experiments ◽  
Error Motion ◽  
Milling Forces ◽  
Chip Load

In this paper, the role of milling cutter eccentricity, commonly referred to as runout, is explored to determine its effects on surface topography and milling forces. This work is motivated by the observation that commercially-available cutter bodies often exhibit variation in the teeth/insert radial locations as a result of manufacturing issues. Consequently, the chip load on individual cutting teeth varies periodically, which can lead to premature failure of the cutting edges. Additionally, this chip load variation increases the roughness of machined surfaces. This research isolates the effect of runout on cutting forces and the machined surface finish in a series of experiments completed on a precision milling machine with 0.1 μm positioning repeatability and 0.02 μm spindle error motion. The runout is varied in a controlled fashion and results compared between experiment and a comprehensive time-domain simulation.

The Role of Grain Tip Radius in Fine Grinding

1975 ◽  
Vol 97 (3) ◽  
pp. 1119-1125 ◽  
Author(s):  
G. K. Lal ◽  
M. C. Shaw
Keyword(s):  
Grain Size ◽  
Surface Finish ◽  
Chip Thickness ◽  
Radius Of Curvature ◽  
Undeformed Chip Thickness ◽  
Fine Grinding ◽  
Abrasive Grains ◽  
Grinding Conditions ◽  
Tip Radius

The scratches produced by single abrasive grains in overcut fly milling show that the transverse shape of a grain is closely approximated by an arc of a circle. This radius of curvature is found to be independent of grain type and grinding conditions but varies with the grain size. The equation for undeformed chip thickness for surface grinding is rederived in terms of this radius. The important role that the transverse curvature of the grain plays relative to surface finish is also discussed.

Mineralization of Titanium Substrates with Different Structures and Surface Finish, Pre-Incubated in Albumin

2006 ◽  
Vol 514-516 ◽  
pp. 1049-1053
Author(s):  
Sandra C.P. Cachinho ◽  
Paula A.A.P. Marques ◽  
Rui N. Correia
Keyword(s):  
Surface Morphology ◽  
Surface Finish ◽  
Chemical Treatment ◽  
Buffer System ◽  
Carbonated Apatite ◽  
In Vitro Mineralization ◽  
Albumin Adsorption ◽  
Titanium Substrates

A study is reported on the influence of surface morphology, chemistry and albumin adsorption on the in vitro mineralization of titanium. Albumin is the most abundant protein in plasma and was chosen as a pre-incubation medium for titanium substrates previously conditioned by mechanical, thermal and chemical treatment. Subsequent mineralization studies were performed in carbonated simulated inorganic plasma (CSIP) physiologically buffered with CO2/HCO3 -. The results indicate that surface morphology and albumin adsorption contribute to the development of a B-carbonated apatite deposit and, furthermore, that the buffer system may alter the role of albumin in mineralization.

Helium II Film Transport. II. The Role of Surface Finish

1955 ◽  
Vol 99 (2) ◽  
pp. 346-358 ◽  
Author(s):  
Bernard Smith ◽  
Henry A. Boorse
Keyword(s):  
Surface Finish ◽  
Helium Ii

Recent Advances in the Study of Electrochemical Micromachining

1996 ◽  
Vol 118 (1) ◽  
pp. 29-36 ◽  
Author(s):  
M. Datta ◽  
R. V. Shenoy ◽  
L. T. Romankiw
Keyword(s):  
Thin Film ◽  
Mass Transport ◽  
Anodic Dissolution ◽  
Current Distribution ◽  
Surface Finish ◽  
High Rate ◽  
Electrochemical Micromachining ◽  
Shape Evolution ◽  
Thin Film Patterning

The present paper reviews some fundamental aspects related to the understanding of the high rate anodic dissolution processes and their influence on thin film patterning by electrochemical micromachining. The role of convective mass transport and current distribution on the surface finish and shape evolution is discussed. Several examples of the applications of maskless and through-mask electrochemical micromachining are presented.

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