Preparation of a self-catalyzed amino-epoxy phthalonitrile resin with a large processing window

2022 ◽  
Author(s):  
Xinggang Chen ◽  
Yanqing Cai ◽  
Xiongwei Qu ◽  
Jun Chen ◽  
De Zheng
Keyword(s):  
Processing Window

Effect of a Ti-capped and Ti-mediated Layer on Co Silicide Formation

2002 ◽  
Vol 716 ◽  
Author(s):  
G.Z. Pan ◽  
E.W. Chang ◽  
Y. Rahmat-Samii
Keyword(s):  
Electron Diffraction ◽  
Sheet Resistance ◽  
Thermal Annealing ◽  
Rapid Thermal Annealing ◽  
Diffusion Barrier ◽  
Silicide Formation ◽  
Plan View ◽  
Processing Window

AbstractWe comparatively studied the formation of ultra thin Co silicides, Co2Si, CoSi and CoSi2, with/without a Ti-capped and Ti-mediated layer by using rapid thermal annealing in a N2 ambient. Four-point-probe sheet resistance measurements and plan-view electron diffraction were used to characterize the silicides as well as the epitaxial characteristics of CoSi2 with Si. We found that the formation of the Co silicides and their existing duration are strongly influenced by the presence of a Ti-capped and Ti-mediated layer. A Ti-capped layer promotes significantly CoSi formation but suppresses Co2Si, and delays CoSi2, which advantageously increases the silicidation-processing window. A Ti-mediated layer acting as a diffusion barrier to the supply of Co suppresses the formation of both Co2Si and CoSi but energetically favors directly forming CoSi2. Plan-view electron diffraction studies indicated that both a Ti-capped and Ti-mediated layer could be used to form ultra thin epitaxial CoSi2 silicide.

FeCo-based amorphous alloys with high ferromagnetic elements and large annealing processing window

2021 ◽  
Vol 131 ◽  
pp. 107087
Author(s):  
X.S. Li ◽  
Z.Y. Xue ◽  
X.B. Hou ◽  
G.Q. Wang ◽  
X. Huang ◽  
...  
Keyword(s):  
Amorphous Alloys ◽  
Processing Window

scholarly journals Effects of Wire Diameter and Filament Size on the Processing Window of Bi-2212 Round Wire

2021 ◽  
Vol 31 (5) ◽  
pp. 1-6
Author(s):  
Jianyi Jiang ◽  
S. Imam Hossain ◽  
T. Abiola Oloye ◽  
Yavuz Oz ◽  
Shaon Barua ◽  
...  
Keyword(s):  
Wire Diameter ◽  
Processing Window ◽  
Round Wire

Influence of graphite nodularity on microstructure and processing window of 1.5% Ni–0.3% Mo austempered cast iron

2006 ◽  
Vol 435-436 ◽  
pp. 564-572 ◽  
Author(s):  
M. Ramadan ◽  
A.A. Nofal ◽  
I. Elmahalawi ◽  
R. Abdel-Karim
Keyword(s):  
Cast Iron ◽  
Processing Window

scholarly journals Enhancement of the processing window and performance of polyamide 1010/bio‐based high‐density polyethylene blends by melt mixing with natural additives

2019 ◽  
Vol 69 (1) ◽  
pp. 61-71 ◽  
Author(s):  
Luis Quiles‐Carrillo ◽  
Nestor Montanes ◽  
Vicent Fombuena ◽  
Rafael Balart ◽  
Sergio Torres‐Giner
Keyword(s):  
High Density Polyethylene ◽  
High Density ◽  
Melt Mixing ◽  
Polyethylene Blends ◽  
Processing Window ◽  
And Performance ◽  
Polyamide 1010 ◽  
Natural Additives

Expanded Polystyrene Lost Foam Casting—Modeling Bead Steaming Operations

2006 ◽  
Vol 129 (2) ◽  
pp. 425-434 ◽  
Author(s):  
Douglas M. Matson ◽  
Rakesh Venkatesh ◽  
Scott Biederman
Keyword(s):  
High Speed ◽  
Test Pattern ◽  
Void Formation ◽  
Expanded Polystyrene ◽  
Lost Foam Casting ◽  
Processing Conditions ◽  
High Speed Video ◽  
Processing Window ◽  
Acrylic Sheet ◽  
Lost Foam

The retention of pattern voids observed in the production of expandable polystyrene patterns for lost foam casting can be traced to conditions developed during mold filling and subsequent steaming. Void formation and closure, or healing, was observed using high-speed video imaging through a clear acrylic sheet cut to match one-half of a test pattern mold. Two processing conditions, i.e., the initial bead packing density and the velocity of steam as it passes between beads, were shown to significantly impact the ability of a void to heal during steaming. A model is proposed to predict conditions where voids will heal based on three criteria that relate to a limitation of the processing window, the void size, and the ability of the bead to swell.

Processing Characteristics of Layered Silicate Nanocomposites With Application to Blown Film

2002 ◽  
Author(s):  
Taner E. Dirama ◽  
Lloyd A. Goettler
Keyword(s):  
Bubble Formation ◽  
Layered Silicate ◽  
Polyamide 6 ◽  
Film Blowing ◽  
Rheological Measurements ◽  
Processing Window ◽  
Dsc Measurements ◽  
Silicate Nanocomposites ◽  
Blown Film

The aim of this study is to investigate the film blowing processing of various polyamide 6-based layered silicate nanocomposites (LSN’s) and to correlate their processing behaviors to the underlying rheology and structure. In-situ polymerized nanocomposites were found to possess a wider processing window compared to the base PA6. Shear and dynamic rheological measurements were employed to correlate the rheological behavior of the nanocomposites to the bubble formation and stability in the film blowing process. The in-situ plymerized LSN melts having higher elastic modulus (G′) were found to perform better in the film blowing process. DSC measurements indicated that nanoclays induce the γ type of crystallinity, which may also play a role in film blowing behavior.

scholarly journals Roll-to-roll gravure-printed flexible perovskite solar cells using eco-friendly antisolvent bathing with wide processing window

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Young Yun Kim ◽  
Tae-Youl Yang ◽  
Riikka Suhonen ◽  
Antti Kemppainen ◽  
Kyeongil Hwang ◽  
...  
Keyword(s):  
Solar Cells ◽  
Perovskite Phase ◽  
Low Cost ◽  
Perovskite Solar Cells ◽  
Pilot Scale ◽  
Butyl Alcohol ◽  
Processing Window ◽  
Roll To Roll ◽  
Tert Butyl Alcohol ◽  
Conversion Efficiencies

Abstract Driven by recent improvements in efficiency and stability of perovskite solar cells (PSCs), upscaling of PSCs has come to be regarded as the next step. Specifically, a high-throughput, low-cost roll-to-roll (R2R) processes would be a breakthrough to realize the commercialization of PSCs, with uniform formation of precursor wet film and complete conversion to perovskite phase via R2R-compatible processes necessary to accomplish this goal. Herein, we demonstrate the pilot-scale, fully R2R manufacturing of all the layers except for electrodes in PSCs. Tert-butyl alcohol (tBuOH) is introduced as an eco-friendly antisolvent with a wide processing window. Highly crystalline, uniform formamidinium (FA)-based perovskite formation via tBuOH:EA bathing was confirmed by achieving high power conversion efficiencies (PCEs) of 23.5% for glass-based spin-coated PSCs, and 19.1% for gravure-printed flexible PSCs. As an extended work, R2R gravure-printing and tBuOH:EA bathing resulted in the highest PCE reported for R2R-processed PSCs, 16.7% for PSCs with R2R-processed SnO2/FA-perovskite, and 13.8% for fully R2R-produced PSCs.

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