scholarly journals Effects of the Casting Method on Au-Ag-Pd Alloy Castings

1988 ◽  
Vol 42 (6) ◽  
pp. 867-886
Author(s):  
Terumi Hotta
Keyword(s):  
Casting Method ◽  
Pd Alloy ◽  
Alloy Castings

Simultaneous Fabrication of Multiple Castings Using Frozen Mold Casting Method

2020 ◽  
Vol 405 ◽  
pp. 75-79
Author(s):  
Yasuhiro Hoshiyama ◽  
Keisuke Nakashima ◽  
Hideto Matsumoto
Keyword(s):  
Aluminum Alloy ◽  
Environmental Impact ◽  
Molten Metal ◽  
Resource Utilization ◽  
Casting Method ◽  
Casting Mold ◽  
Mold Casting ◽  
Conventional Methods ◽  
Alloy Castings

Frozen mold casting uses a casting mold in which only water is added as a binder to sand, and the mixture is kneaded, frozen, and solidified. This method can offer the same level of mold strength and productivity as conventional methods, while maintaining a low environmental impact in terms of resource utilization and ensuring pollution-free processing. We studied the simultaneous fabrication of multiple aluminum alloy castings using a frozen mold. No defects associated with the collapse of the mold due to the molten metal heat were found. No entrainment of sand was observed on the surface of the samples.

scholarly journals Characterization of Microstructure and Mechanical Properties of CuCr Alloy Produced by Stir Casting

2019 ◽  
Vol 12 (4) ◽  
pp. 82-91
Author(s):  
Asaad Kadhim Eqal ◽  
Sami Abualnoun Ajeel ◽  
Rabiha S. Yaseen
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Chromium Content ◽  
Pure Copper ◽  
Solution Treatment ◽  
Aging Treatment ◽  
Stir Casting ◽  
Casting Method ◽  
Alloy Castings

The relatively low mechanical properties of pure copper at low and high temperature made it very limited applications. The mechanical properties of the copper can be improved by adding a small amount of elements such as Cr. This work consists of four CuCr alloy castings (0.3, 0.8, 1.2 and 1.5%) by using the stir casting method in an argon atmosphere. Then, the heat treatment was done for these alloys which included solution treatment and aging. Heat treatment was treated at 980 ° C for 1 hour, then water-quenching, followed by an aging treatment at 480 ° C for 2.4 and 6 hours. The Optical Microscopy and the Scanning Electron Microscopy (SEM) with  (EDS) were used to study the microscopic structure of the produced alloys. The results showed that the mechanical properties of copper increased with increasing chromium content. The microstructure of the castings consist of  the dendiritic structure, columinar and segregation. It has been also indicated that after heat treatment and aging, the microstructure changed to fine grains and the clusters disappeared. XRD showed a α-Cu phase and a small amount of CrO2 in microstructures. The highest value of hardness and the ultimate tensile were 101 Hv and 239.12 MPa, respectively. They were achieved at 1.5wt% addition of Cr at 480oC and 4hrs aging

scholarly journals Casting Au-Ag-Pd Alloy to the Embedded Keeper of Magnetic Attachment. Part 2. Influence of Casting Method.

2000 ◽  
Vol 44 (3) ◽  
pp. 410-415 ◽  
Author(s):  
Akio Asano ◽  
Mutsuo Yamauchi ◽  
Makoto Sakai ◽  
Motonobu Miyao ◽  
Tooru Nagasawa
Keyword(s):  
Casting Method ◽  
Magnetic Attachment ◽  
Pd Alloy

Formulation and Evaluation of Chitosan-Polyaniline Nanocomposites for Controlled Release of Anticancer Drug Doxorubicin

2018 ◽  
Vol 8 (2) ◽  
Author(s):  
Dillip Kumar Behera ◽  
Kampal Mishra ◽  
Padmolochan Nayak
Keyword(s):  
Tensile Strength ◽  
Drug Release ◽  
Nanocomposite Films ◽  
Casting Method ◽  
Sustained Drug Release ◽  
In Vitro Drug Release ◽  
Clay Particles ◽  
Solution Casting Method ◽  
Nanoclay Content

In this present work, chitosan (CS) crosslink with polyaniline (PANI) with montmorilonite (MMT) called as (CSPANI/MMT) and CS crosslink with PANI without MMT called as (CS-PANI) were prepared by employing the solution casting method. Further the formation of nanocomposites CS-PANI/MMT and CS-PANI were investigated using XRD, FTIR, SEM and tensile strength. Water uptake and swelling ratio of the CS-PANI and CS-PANI/MMT were found to decrease with increase in concentration of clay. Mechanical properties of the CS-PANI and CS-PANI/MMT were assessed in terms of tensile strength and extensibility using texture analyzer. Increase in tensile strength and reduction in extensibility was reported with increase in the nanoclay content. In vitro drug release study on CS-PANI and CS-PANI/MMT indicated pronounced sustained release of doxorubicin by the incorporation of clay particles in the CS polymer matrix. Overall CSPANI/MMT nanocomposite films exhibited improved mechanical and sustained drug release properties than CS-PANI.

Fabrication and Characterization of MMCs Using Stir Casting Method

2014 ◽  
Vol 4 (3) ◽  
pp. 27-32
Author(s):  
Jeevan Singh Bisht ◽  
◽  
Akshay Dvivedi ◽  
Apurbba Kumar Sharma ◽  
◽  
...  
Keyword(s):  
Stir Casting ◽  
Casting Method ◽  
Fabrication And Characterization

APPLICATIONS OF CHITOSAN-SULFATHIAZOLE AS ANTIMICROBIAL AGENT

2018 ◽  
Vol 28 (2) ◽  
pp. 429-432
Author(s):  
Dilyana Zvezdova
Keyword(s):  
Wound Healing ◽  
Antibacterial Activity ◽  
Fourier Transform ◽  
Infrared Spectroscopy ◽  
Antimicrobial Agent ◽  
Defense Mechanisms ◽  
Solvent Casting ◽  
Casting Method ◽  
Gram Negative ◽  
Positively Charged

Chitosan, a hydrophilic biopolymer industrially obtained by N-deacetylation of chitin, can be applied as an antimicrobial agent. It highlights the applications of chitosan as an antimicrobial agent against fungi, bacteria, and viruses and as an elicitor of plant defense mechanisms. A series of novel chitosan-sulfathiazole nanocomposite (CSFZ) films were prepared by using solvent casting method for wound healing application. Fourier transform infrared spectroscopy (FTIR) was employed to ascertain the interaction between negatively charged sulfathiazole and positively charged chitosan. Moreover, the antibacterial activity of the films was investigated against gram positive and gram negative microorganisms. It was found that all CSFZ films showed good inhibitory activity against all the tested bacteria as compared to control. The above analysis suggested that the CSFZ films could be used as potential candidates for wound healing application.

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