Laser‐heated emission of electrons from a carbon‐coated metal surface and its application to the emissive probe measurements

1979 ◽  
Vol 50 (10) ◽  
pp. 1264-1267 ◽  
Author(s):  
S. Ono ◽  
S. Teii
Keyword(s):  
Metal Surface ◽  
Coated Metal ◽  
Carbon Coated ◽  
Laser Heated ◽  
Probe Measurements ◽  
Emissive Probe

N-doped Carbon-coated Metal Sulfides/Phosphides Derived from Protic Salts for Oxygen Evolution Reaction

ChemCatChem ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 1185-1191 ◽  
Author(s):  
Jiusheng Jiang ◽  
Jianping Chen ◽  
Pingping Jiang ◽  
Yan Leng ◽  
Wei Jin
Keyword(s):  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Metal Sulfides ◽  
Coated Metal ◽  
Carbon Coated

Zero bias emission current in laser heated emissive probe and proper choice of probe-tip material

2019 ◽  
Vol 26 (5) ◽  
pp. 053501
Author(s):  
P. Pandit ◽  
A. Sarma ◽  
J. Ghosh ◽  
Vara Prasad Kella ◽  
N. Ramaiya ◽  
...  
Keyword(s):  
Emission Current ◽  
Proper Choice ◽  
Zero Bias ◽  
Laser Heated ◽  
Emissive Probe

Effect of filament supports on emissive probe measurements

2013 ◽  
Vol 84 (1) ◽  
pp. 013506 ◽  
Author(s):  
X. Wang ◽  
C. T. Howes ◽  
M. Horányi ◽  
S. Robertson
Keyword(s):  
Probe Measurements ◽  
Emissive Probe

Emissive probe measurements of plasma potential fluctuations in the edge plasma regions of tokamaks

2003 ◽  
Vol 74 (3) ◽  
pp. 1583-1587 ◽  
Author(s):  
P. Balan ◽  
R. Schrittwieser ◽  
C. Ioniţă ◽  
J. A. Cabral ◽  
H. F. C. Figueiredo ◽  
...  
Keyword(s):  
Plasma Potential ◽  
Edge Plasma ◽  
Potential Fluctuations ◽  
Probe Measurements ◽  
Emissive Probe

Effects of Implant Drill Wear, Irrigation, and Drill Materials on Heat Generation in Osteotomy Sites

2015 ◽  
Vol 41 (2) ◽  
pp. e19-e23 ◽  
Author(s):  
Ki-Tae Koo ◽  
Min-Ho Kim ◽  
Hae-Young Kim ◽  
Ulf M. E. Wikesjö ◽  
Jae-Ho Yang ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Repeated Measures ◽  
Critical Factor ◽  
Initial Time ◽  
Zirconia Ceramic ◽  
Thermal Change ◽  
Coated Metal ◽  
Significant Difference ◽  
Initial Time Point ◽  
Carbon Coated

This study evaluated the effects of drill wear on bone temperature during osteotomy preparation with 3 types of drills and compared heat production between drills. The drills used in this study were titanium nitride-coated metal, tungsten carbide carbon-coated metal, and zirconia ceramic drills. An osteotomy 11 mm in depth was formed in bovine scapular bone following the manufacturer's recommended drill sequences. Drilling was performed without irrigation and repeated 20 times; temperature was measured every 5 times. Next, 200 rounds of drilling during irrigation were performed for each drill, with temperature change monitored until round 200. Analysis of variance statistics were used for analyses of the measured data. Drilling without irrigation showed significant thermal increase at all time points compared to drilling with irrigation (P < .001). No significant difference was found between drill materials. Under irrigation, the frequency of previous drilling had minimal effects on thermal change. The repeated-measures analysis of variance revealed major thermal change at the initial time point (P < .0001), and the multiple comparison tests revealed a significant difference in temperature between the initial drills that had been used 50 or fewer times and those that had been used more than 50 times, irrespective of the drill material. The results of this study indicate that the initial drill should be changed in osteotomy preparation with irrigation after they have been used 50 times. Irrigation may be a more critical factor for the control of temperature elevation than is the drill material.

Wear properties of diamond-like carbon coatings with silicon and chromium as adhesion layer using a high frequency reciprocating rig

2017 ◽  
Vol 231 (12) ◽  
pp. 1605-1615 ◽  
Author(s):  
Raman Maiti ◽  
Robin Mills
Keyword(s):  
Diamond Like Carbon ◽  
Wear Properties ◽  
Adhesion Layer ◽  
Stroke Length ◽  
Carbon Coatings ◽  
Wear Process ◽  
Coated Metal ◽  
Carbon Coated ◽  
Number Of Cycles ◽  
Cycles To Failure

The application of diamond-like carbon coatings to bearing surfaces is widespread from machining to bio-implants and has resulted in significant study of coating properties. The aim of this investigation was to determine the performance of two diamond-like carbon coatings, using chromium and silicon as adhesion layers. Linear reciprocating wear tests were carried out at room temperature using an AISI 440C steel ball reciprocating against the diamond-like carbon-coated metal substrate. The performance of the coatings under different contact pressures (500–3000 MPa); peak sliding velocities (28–378 mm/s); and stroke length, (1.5–4 mm). An electric resistance measurement was used to monitor coating failure owing to the dielectric nature of the tested coatings. An increase in contact pressure resulted in a decrease in number of cycles to failure for both the coatings. However, the number of cycles to failure increased proportionally with sliding speed. In addition, artifacts on the coating and blister formation generated coating debris which acted as a third body during the wear process. The debris caused complete delamination of the coatings initially at the ends of the wear scar. The silicon adhesion layer-coating samples were found to provide a greater resistance to failure due to it being thicker, harder, and more elastic as compared to samples having a chromium adhesion layer.

Nondestructive and remote diagnosis on coated metal surface by THz imaging

2015 ◽  
Author(s):  
Takashi Kimura ◽  
Seiya Takahashi ◽  
Kensaku Maeda ◽  
Yutaka Oyama
Keyword(s):  
Metal Surface ◽  
Thz Imaging ◽  
Remote Diagnosis ◽  
Coated Metal

Measurements of HF-Plasma Oscilations by means of a Laser-Heated Emissive Probe

2013 ◽  
Vol 53 (1) ◽  
pp. 92-95 ◽  
Author(s):  
R. Schrittwieser ◽  
C. Ionita ◽  
K. Rahbarnia ◽  
J. Gruenwald ◽  
T. Windisch ◽  
...  
Keyword(s):  
Laser Heated ◽  
Emissive Probe
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