effect of surface roughness and radiation on graphite

The Effect of Print Speed on Surface Roughness and Density

The Effect of Print Speed on Surface Roughness and Density Uniformity of Parts Produced Using Binder Jet 3D Printing K. Myers 1, A. Paterson, T. Iizuka2, and A. Klein1 1The ExOne Company, 127 Industry Boulevard, North Huntingdon, PA, 15642 2ExOne KK, 161-5 Haneo, Odawara-shi, Kanagawa Japan, 256-0804

Influence of surface roughness on secondary electron emission

Influence of surface roughness on secondary electron emission from graphite Thomas S. Burton Department of Metallurgical and Materials Engineering, University of Alabama, Tuscaloosa, Alabama 35487 Tyson C. Back Materials and Manufacturing Directorate, Air

Signal Transmission Loss due to Copper Surface Roughness in

surface roughness Rz of the copper foil commonly used in printed circuit board is 6 μm. This is a value greater than 2.1 μm of the skin depth at 1 GHz. Here, Rz is a ten-point average roughness of the surface. Because skin depth becomes smaller than surface

An Experimental Study of the Effect of Machining Parameters on TiB2 /Graphite

An Experimental Study of the Effect of Machining Parameters on TiB 2 /Graphite/Magnesium Reinforced Aluminum 7075 Fabricated Composite by Stir Casting on CNC Lathe for Surface Roughness and Cutting Force by using Taguchi Design

Effect of microwave disinfection on denture base

Effect of microwave disinfection on denture base adaptation and resin surface roughness. Sartori EA(1), Schmidt CB, Walber LF, Shinkai RS. Author information: (1)Department of Prosthodontics, Dental School, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, RS, Brazil.

[PDF] Effect of roughness on Radiation Characteristic of

Firstly, the wavelet analysis was used as the filter tool to separate the different scale roughness from the reflector surface testing data, and a mathematical model of the multi-scale roughness was presented to investigate its impact on the radiation characteristic of the reflector antenna. Based on the roughness model, a formulation of density of the far-field was deduced and the definable

14. Surface Roughness and Temperature Effect on Ion Reflection from Si and Graphite

m roughness), and a graphite sample. The H +beam energy was kept at 1 keV and beam current was 10-40 Surface Roughness and Temperature Effect on Ion Reflection from Si and Graphite Following Low-energy H+ Beam Injection Yamaoka, H. (RIKEN

Radiation and Roughness Effects on Nozzle

Surface roughness and radiation effects on the erosion behavior of a graphite nozzle are studied for both metallized and nonmetallized propellants. A validated numerical approach that relies on a full Navier–Stokes flow solver coupled with a thermochemical ablation model is used for the analysis.

Effect of Surface Roughness and Radiation on Graphite

Effect of Surface Roughness and Radiation on Graphite Nozzle Erosion in Solid Rocket Motors Piyush Thakre and Mechanical Erosion of Graphite Nozzle in Solid-Propellant Rocket Motor Piyush Thakre, Rajesh Rawat, Richard Clayton and Vigor Yang 7 May

Effect of Surface Orientation on Nucleate Boiling of FC

Effects of orientations of porous graphite and smooth copper surfaces, measuring 10 mm 10 mm, on saturation nucleate boiling and critical heat flux (CHF) of FC-72 dielectric liquid and of liquid subcooling (0, 10, 20, and 30 K ) on nucleate boiling in the upward facing orientation are investigated.

The influence of substrate morphology on the thermal

SiC coating was prepared on the graphite substrate and the effects of substrate morphology on the thermal radiation properties of SiC coating were investigated. As the surface roughness of the graphite substrate decreasing from 2.95 to 0.68 μm, the total emissivity of SiC coating increased 28.33% at 1000 C and 36.21% at 1600 C, respectively. At the same time, the spectral emissivity of

OPTIMIZATION OF CUTTING PARAMETERS OF AL

significant impact on surface roughness. The rate of graphite has most significant effect on cutting force i.e. 79.72% followed by feed rate. Kishore et al. [14] studied the machinability on Al6061-TiC MMC to know the effect of cutting speed,feed, and depth of cut

Investigation of UV exposure in adhesively bonded

2018/5/25The surface roughness modifications in the bonded area of the joint promote an expressive effect in the bonded structures [5, 6]. The main techniques for surface modification are sandblasting, grinding and chemical cleaning that makes a generation of specific surface

The influence of nanoscale roughness and substrate

Nanoscale carbon lubricants such as graphene, have garnered increased interest as protective surface coatings for devices, but its tribological properties have been shown to depend on its interactions with the underlying substrate surface and its degree of surface

The Influence of Artificial Photodegradation on Properties

2017/6/19The potential use of poly(3-hydroxybutyrate-co-3-hydroxyvalerate)/graphite nanosheets (GNS) as a biodegradable nanocomposite has been explored. PHBV/GNS nanocomposites films were prepared by solution casting at various concentrations of GNS—0.25, 0.50 and 1.00 wt% GNS. The films were exposed to artificial ultraviolet radiation (UV) during 52 h. The effect of GNS on PHBV

Optical Properties of Pyrolytic Carbon Films Versus

2015/5/27The morphology, the grain size, and the surface roughness of all deposited films were obtained using AFM. Fig. 2a shows AFM image of the 5 nm thick PyC film. One can observe that the film has a granular structure with correlation length of surface roughness less than 100 nm.

Comparison of the Effects of Surface Treatments on

Objective: The aim of this study was to evaluate the effects of different surface treatments on the surface roughness of lithium disilicate-based core (IPS Empress 2, shade 210, Ivoclar Vivadent, Schaan, Liechtenstein) and feldspathic ceramics (Vita VM9, VITA Zahnfabrik H. Rauter Co. KG, Bad Sckingen, Germany).

The effect of surface roughness and emissivity on radiator

2011/2/1The effect of altering the emissivity and the roughness of a wall behind a radiator on the radiator heat output has been studied experimentally and by using computational fluid dynamics. The results of a 3D RNG k–ɛ turbulent model agree well with,

Effect of chemical etching on the surface roughness of

The material removal rate (etching rate) from the crystals was found to be 10 μm, 30 μm, and 15 μm per minute, respectively. The roughness of the resulting surfaces was determined by the Atomic Force Microscopy (AFM) to identify the most efficient surface

The effect of surface roughness on flow structures in a

The effects of surface roughness on the structures of a neutrally stratified planetary boundary layer flow are investigated by the large-eddy simulation technique. Our numerical model, which assumes horizontal periodicity, shows that the growth of an internal boundary layer (IBL) in response to an abrupt change of surface roughness (either smooth-to-rough transition or rough-to-smooth

Effect of surface roughness on osteogenesis in vitro

Effect of surface roughness on osteogenesis in vitro and osseointegration in vivo of carbon fiber-reinforced polyetheretherketone–nanohydroxyapatite composite Yi Deng,1,2 Xiaochen Liu,2 Anxiu Xu,3 Lixin Wang,4 Zuyuan Luo,2 Yunfei Zheng,1 Feng

How stem finish affects friction and fugitive emissions with graphite

How stem finish affects friction and fugitive emissions with graphite-based control valve packing A technical paper presented by He joined James Walker in 1997 and has held technical roles within the sealing industry for over 15 years. This included 6 years as a