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Online since: February 2021
Authors: Germar Schneider, Stefan Kaskel, Peter Franze
KG, Koenigsbruecker Strasse 180, 01099 Dresden, Germany
2Chair of Inorganic Chemistry I, Technical University of Dresden, Bergstrasse 66, 01069 Dresden, Germany
apeter.franze@infineon.com, bgermar.schneider@infineon.com, c tefan.kaskel@tu-dresden.de
Keywords: AMC, airborne molecular contamination, FOUP, FOUP management, chemical analysis, power semiconductors, CRDS, mass spectroscopy, electrochemical conductivity measurements
Abstract.
Due to this fact, a deep knowledge of the AMC levels within the FOUP atmospheres is required to assure stable yields and to prevent all reliability issues driven by AMC caused corrosion processes in the chip structures [4].
Contaminations of wafer substrates with dopant materials are of special criticality regarding their influence on the electrical behavior of the contaminated chip structures and devices.
Due to this fact, a deep knowledge of the AMC levels within the FOUP atmospheres is required to assure stable yields and to prevent all reliability issues driven by AMC caused corrosion processes in the chip structures [4].
Contaminations of wafer substrates with dopant materials are of special criticality regarding their influence on the electrical behavior of the contaminated chip structures and devices.
Online since: October 2013
Authors: K.S. Sreelatha, I. Jinchu, A. Bharatkumar Sharma, C.O. Sreekala, K. Achuthan
Fig.1 shows the molecular structure and Fig.2 shows its absorption spectrum.
Because only 3.5 nm of CaCO3 layer coated on the TiO2 electrode, the increase in the specific surface area indicates that the coated CaCO3 layer has a very high nanoporous structure.
Authors are deeply indebted to the Department of Chemistry, MG University, Kottayam, Kerala, India for the XRD images.
Because only 3.5 nm of CaCO3 layer coated on the TiO2 electrode, the increase in the specific surface area indicates that the coated CaCO3 layer has a very high nanoporous structure.
Authors are deeply indebted to the Department of Chemistry, MG University, Kottayam, Kerala, India for the XRD images.
Online since: December 2023
Authors: Nur Hafizah Abd Khalid, Adrina Rosseira Abu Talip, Asyrofuddin Fadhlullah, Berlianada Rizki Priandita
However, as the curing age increases, the effective penetration of CO2 from the surrounding to deeper layers of the samples decreases due to the formation of CaCO3 and the reduction of pore structure [11].
However, as the curing age increases, the effective penetration of CO2 from the surrounding to deeper layers of the samples decreases due to the formation of CaCO3 and the reduction of pore structure [11].
Chemistry of construction materials.
However, as the curing age increases, the effective penetration of CO2 from the surrounding to deeper layers of the samples decreases due to the formation of CaCO3 and the reduction of pore structure [11].
Chemistry of construction materials.
Online since: June 2015
Authors: Rui Tao Chai, Guo Zhang, Yu Chen, She Ying Dong, Liang Zhang, Xing Hua Li, Yuan Ru Jiang, Wei Hua Guo
Y2O3 (99.999%), Yb2O3 (99.999%), Er2O3 (99.999%) and Tm2O3 (99.999%) were purchased from Science and Technology Parent Company of Changchun Institute of Applied Chemistry.
The shape and structure were characterized by transmission electron microscopy (TEM).
Jiang Multicolor core/shell-structured upconversion fluorescent nanoparticles, Adv Mater 20 (2008) 4765-4769
The shape and structure were characterized by transmission electron microscopy (TEM).
Jiang Multicolor core/shell-structured upconversion fluorescent nanoparticles, Adv Mater 20 (2008) 4765-4769
Online since: March 2023
Authors: Surya Lokesh Avapati, Vundavalli Venkata Sravanth, Venkata Rao Poiba, Meena Vangalapati
The major chemical constituent found in Aegle Marmelos leaves is Aegelin Figure1 shows the chemical structure of aegelin.
Structure of Aegelin The current study serves the purpose to investigate the Aegle Marmelos leaves corrosion inhibition effect on Aluminium in 1M H2SO4 acidic medium.
[10] Klodian Xhanari, Matjaž Finšga, Maša Knez Hrnčiča, Uroš Maver, Željko Kneza and Bujar Seiti Green corrosion inhibitors for aluminium and its alloys: a review , Royal Society of Chemistry 7:27299-27330 (2017)
Structure of Aegelin The current study serves the purpose to investigate the Aegle Marmelos leaves corrosion inhibition effect on Aluminium in 1M H2SO4 acidic medium.
[10] Klodian Xhanari, Matjaž Finšga, Maša Knez Hrnčiča, Uroš Maver, Željko Kneza and Bujar Seiti Green corrosion inhibitors for aluminium and its alloys: a review , Royal Society of Chemistry 7:27299-27330 (2017)
Online since: March 2023
Authors: Silvya Yusri, Nabilla S Maharani, Samuel P. Kusumocahyo
The high permeate flux and the high selectivity in the separation of glycerol and biodiesel exhibited by this membrane was correlated with the asymmetric structure of the membrane that had a thin active layer with small pores, while the thick supporting layer consisted of larger pores.
From the BET analysis, it was observed that the adsorption-desorption isotherm graph of the membrane showed the adsorption isotherm of type III based on the category by the International Union of Pure and Applied Chemistry (IUPAC), indicating a macroporous structure of the membrane with pore size of > 50 nm.
From the BET analysis, it was observed that the adsorption-desorption isotherm graph of the membrane showed the adsorption isotherm of type III based on the category by the International Union of Pure and Applied Chemistry (IUPAC), indicating a macroporous structure of the membrane with pore size of > 50 nm.
Online since: September 2008
Authors: Daniel Monceau, Céline Viazzi, Richard Wellman, John R. Nicholls, Florence Ansart, Jean Pierre Bonino, Djar Oquab
The microstructure of the coatings is quite different compared to the columnar
or lamellar oriented ceramic top coat structures normally associated with TBCs.
For glancing angle impact, the erosion rate of EB PVD TBCs is known to depend on the difference in orientation of the impacting particle on the column growth, with a significant increase in the erosion rate for open EB PVD structures when this difference in orientation exceeds 58° [4].
It has been shown that the cyclic oxidation performances of the random orientated ceramic, obtained at low temperature (<1200°C) by this soft chemistry process, are better when the ceramic layer is deposited on a rough bond coat (NiCrAlY bond coat in this case), however the erosion resistance was found to be better for TBCs deposited onto the smoother (Pt,Ni)Al bond coat.
For glancing angle impact, the erosion rate of EB PVD TBCs is known to depend on the difference in orientation of the impacting particle on the column growth, with a significant increase in the erosion rate for open EB PVD structures when this difference in orientation exceeds 58° [4].
It has been shown that the cyclic oxidation performances of the random orientated ceramic, obtained at low temperature (<1200°C) by this soft chemistry process, are better when the ceramic layer is deposited on a rough bond coat (NiCrAlY bond coat in this case), however the erosion resistance was found to be better for TBCs deposited onto the smoother (Pt,Ni)Al bond coat.
Online since: November 2015
Authors: Mohd Mustafa Al Bakri Abdullah, Yun Ming Liew, Kamarudin Hussin, Muhammad Faheem Mohd Tahir, Alida Abdullah, Che Mohd Ruzaidi Ghazali
They possess amorphous to semi-crystalline structures which resemble natural zeolitic materials.
Flood mud has semi oval plate-like structure that is similar to clay materials such as kaolin and metakaolin [14-16].
[16] Davidovits, J., Geopolymer chemistry and applications. 2nd ed. 2008: Institute Geopolymere, 16 rue Galilee, 02100 Saint Quentin, France
Flood mud has semi oval plate-like structure that is similar to clay materials such as kaolin and metakaolin [14-16].
[16] Davidovits, J., Geopolymer chemistry and applications. 2nd ed. 2008: Institute Geopolymere, 16 rue Galilee, 02100 Saint Quentin, France
Online since: January 2012
Authors: Zhi Jun Wu, Tian Li, Jun Deng, Tang Tang Bao
Numerical Model
Using single-zone IC Engine model with heat loss from computational chemistry software CHEMKIN, we numerically simulated an HCCI ethanol engine.
A Comparison of Experimental NOx Data with Calculated Results NOx\\ Excess air ratio Intake temperature 423 K, 1200 r/min Experiment [11] Simulation (NO) 4.6 25 ppm 20.5 ppm 5.9 7 ppm 6.7 ppm Hydrogen Peroxide Properties The structure of H2O2 molecule is H-O-O-H.
Alievb and Nicos Ladommatosa, “Ignition control of homogeneous-charge compression ignition (HCCI) combustion through adaptation of the fuel molecular structure by reaction with ozone,” Fuel vol. 89, Nov. 2010, pp. 3178-3184
A Comparison of Experimental NOx Data with Calculated Results NOx\\ Excess air ratio Intake temperature 423 K, 1200 r/min Experiment [11] Simulation (NO) 4.6 25 ppm 20.5 ppm 5.9 7 ppm 6.7 ppm Hydrogen Peroxide Properties The structure of H2O2 molecule is H-O-O-H.
Alievb and Nicos Ladommatosa, “Ignition control of homogeneous-charge compression ignition (HCCI) combustion through adaptation of the fuel molecular structure by reaction with ozone,” Fuel vol. 89, Nov. 2010, pp. 3178-3184
Online since: April 2012
Authors: Philippe Garcia, B. Pasquet, Alexandre Maître, Fabienne Audubert, S. Noyau, I. Roure
This could indicate the presence of a layer on the surface of the samples with a particular physico-chemical structure which differs from the bulk.
Thus, we do not believe that this transient state is linked to a change in the physico-chemical structure along a surface layer; however, we do believe that it is due to physico-chemical phenomena resulting from the interaction of the oxygen primary ion beam with the U0.55Pu0.45O2-x material.
Street: Journal of Inorganic and Nuclear Chemistry Vol. 29 (1967), p. 2265 [7] H.
Thus, we do not believe that this transient state is linked to a change in the physico-chemical structure along a surface layer; however, we do believe that it is due to physico-chemical phenomena resulting from the interaction of the oxygen primary ion beam with the U0.55Pu0.45O2-x material.
Street: Journal of Inorganic and Nuclear Chemistry Vol. 29 (1967), p. 2265 [7] H.