Characterization of mechanical behavior in repaired FC300 using directly deposited AISI-P21 and AISI-H13 metal powders

2019 ◽  
Vol 234 (1-2) ◽  
pp. 157-169
Author(s):  
Jae-Hyun Yu ◽  
Ki Yong Lee ◽  
Do-Sik Shim ◽  
Sang-Hu Park
Keyword(s):  
Metal Layer ◽  
Deposition Process ◽  
Layer By Layer ◽  
Metal Powders ◽  
Hardness Tests ◽  
Layer Deposition ◽  
Material Usage ◽  
Aisi H13 ◽  
Molten Droplets

Remanufacturing is a promising technique for reducing manufacturing costs and material usage. This work presents a method for repairing casting parts using an additive metal-layer deposition process. To determine characteristics and mechanical properties of parts repaired using the proposed additive metal-layer-deposition-based method, tensile specimens were designed with grooves measuring 1 mm and 3 mm in depth. Two specific metal powders, AISI-P21 (SCM440) and AISI-H13 (SKD61), were melted using a highly focused laser, and molten droplets were subsequently built up layer-by-layer to fill-in the grooves. Mechanical and metallurgical characteristics of repaired parts were investigated via tensile and hardness tests and microstructural analyses. Experimental results demonstrate that the ultimate strength of specimens repaired using the proposed additive metal-layer deposition method measured approximately 9% lower compared with that of FC300. However, the mechanical strength of additive metal-layer deposition specimen was increased about 22% compared with that of welded specimen. Through this work, we can make a conclusion that the additive metal-layer deposition technique is well-suited for the repair and reproduction of castings.

Mechanically Stable Antireflection and Antifogging Coatings Fabricated by the Layer-by-Layer Deposition Process and Postcalcination

Langmuir ◽  
2008 ◽  
Vol 24 (19) ◽  
pp. 10851-10857 ◽  
Author(s):  
Lianbin Zhang ◽  
Yang Li ◽  
Junqi Sun ◽  
Jiacong Shen
Keyword(s):  
Deposition Process ◽  
Layer By Layer ◽  
Layer Deposition

Self-assembled multilayer surfaces of highly fluorescent spirobifluorene-based dye for label-free protein recognition

2019 ◽  
Vol 7 (32) ◽  
pp. 4933-4939
Author(s):  
Friederike Schlüter ◽  
Bart Jan Ravoo ◽  
Fabio Rizzo
Keyword(s):  
Deposition Process ◽  
Protein Recognition ◽  
Layer By Layer ◽  
Label Free ◽  
Free Protein ◽  
Layer Deposition ◽  
Self Assembled ◽  
New Sensors

New sensors for the recognition of proteins on glass and quartz surfaces were developed in a straightforward layer-by-layer deposition process.

Preparation and Characterization of La x C60 Thin Films Fabricated by Layer-by-Layer Deposition

1998 ◽  
Vol 6 (2) ◽  
pp. 199-212
Author(s):  
Toshifumi Terui ◽  
Yusei Maruyama ◽  
Takeshi Arai ◽  
Shinro Mashiko
Keyword(s):  
Thin Films ◽  
Layer By Layer ◽  
Layer Deposition

Validation of a low-cost selective powder deposition process through the characterization of tin bronze specimens

2021 ◽  
pp. 146442072110319
Author(s):  
Samuel Magalhães ◽  
Manuel Sardinha ◽  
Carlos Vicente ◽  
Marco Leite ◽  
Relógio Ribeiro ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
Low Cost ◽  
Deposition Process ◽  
Metal Powders ◽  
Tin Bronze ◽  
Powder Deposition ◽  
Manufacturing Technologies ◽  
The Cost

Additive manufacturing technologies are becoming increasingly popular due to their advantages over traditional subtracting manufacturing technologies. Despite advances in this field, fixed and maintenance costs for additive manufacturing with metals remain high. The introduction of low-cost metal machines in the additive manufacturing market considerably reduces the cost of acquiring and maintaining this type of equipment. This work aims to establish the process requirements for a low-cost selective powder deposition process, and validate it through the production of specimens in the laboratory and evaluate their mechanical properties. Tin bronze specimens were produced under different manufacturing conditions, namely powder dimensions, type of crucible and coke, firing segments and casting strategy. The morphology and chemical composition of the specimens were carried out combining the scanning electron microscopy and energy dispersive X-Ray spectroscopy techniques, respectively. It was observed that crucibles and coke with impurities that react with the metal powders and infill in a reducing atmosphere have influence in the final quality of parts. Tested samples displayed high variability of results which can be correlated with different manufacturing conditions. The selection of the appropriate print parameters led to the manufacture of tin bronze specimens with mechanical properties comparable to those reported in the literature. Overall, low-cost selective powder deposition is a promising technology, if identified manufacturing issues are addressed.

Characterization of LaxHfyO Gate Dielectrics in 4H-SiC MOS Capacitor

2014 ◽  
Vol 778-780 ◽  
pp. 549-552 ◽  
Author(s):  
Jing Hua Xia ◽  
David M. Martin ◽  
Sethu Saveda Suvanam ◽  
Carl Mikael Zetterling ◽  
Mikael Östling
Keyword(s):  
Gate Dielectric ◽  
Gate Dielectrics ◽  
Atomic Layer ◽  
Deposition Process ◽  
Mos Capacitors ◽  
Mos Capacitor ◽  
Layer Deposition ◽  
High K ◽  
Film Characteristics

LaxHfyO nanolaminated thin film deposited using atomic layer deposition process has been studied as a high-K gate dielectric in 4H-SiC MOS capacitors. The electrical and nano-laminated film characteristics were studied with increasing post deposition annealing (PDA) in N2O ambient. The result shows that high quality LaxHfyO nano-laminated thin films with good interface and bulk qualities are fabricated using high PDA temperature.

Quantitative Aspects of PLAD Sidewall Doping Characterization by SIMS and APT

2018 ◽  
Vol 25 (2) ◽  
pp. 511-516
Author(s):  
Dimitry Kouzminov ◽  
James Cournoyer ◽  
Somchintana Norasetthekul ◽  
Harish Muthuraman ◽  
Qi Gao
Keyword(s):  
Secondary Ion Mass Spectrometry ◽  
Chemical Vapor ◽  
Atomic Layer ◽  
Deposition Process ◽  
Atom Probe ◽  
Adverse Impacts ◽  
Layer Deposition ◽  
Quantitative Results ◽  
Secondary Ion

AbstractApplication of atom probe tomography (APT) and 1.5D secondary ion mass spectrometry (SIMS) as complimentary techniques to study fin sidewall doping by plasma implantation (PLAD) is the focus of this paper. Unlike planar transistors, characterization of 3D devices both by SIMS and APT requires sample preparation via trench backfill with α-Si, or other material, via chemical vapor deposition or atomic layer deposition process due to high aspect ratio of test structures. Certain artifacts with adverse impacts on quantitative results encountered in this study are discussed.

Growth and morphological studies of NiO/CuO/ZnO based nanostructured thin films for photovoltaic applications

2014 ◽  
Vol 68 (11) ◽  
Author(s):  
Siddharth Joshi ◽  
Mrunmaya Mudigere ◽  
L. Krishnamurthy ◽  
G. Shekar
Keyword(s):  
Thin Films ◽  
Indium Tin Oxide ◽  
Uv Spectroscopy ◽  
Layer By Layer ◽  
X Ray Diffraction ◽  
Semiconducting Materials ◽  
Morphological Studies ◽  
Layer Deposition ◽  
Ito Glass

AbstractAt present, inorganic semiconducting materials are the most economical and viable source for the renewable energy industry. The present work deals with the morphological and optical characterization of copper oxide (CuO) and zinc oxide (ZnO) thin films fabricated by layer by layer deposition on nickel oxide (NiO) coated indium tin oxide (ITO) glass by solution processing methods, mainly chemical bath deposition (CBD) and hydrothermal deposition (HTD) processes at room temperature. As a whole, the above inorganic composite materials (NiO/CuO/ZnO) can be applied in photovoltaic cells. An attempt has been made to study structural, morphological and absorption characteristics of NiO/CuO/ZnO heterojunction using state of the art techniques like X-ray diffraction (XRD), scanning electron microscopy (SEM), and UV spectroscopy. The energy band gaps of CuO and ZnO have also been calculated and discussed based on the UV spectroscopy measurements.

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