Water Based Pack Carburizing Technique: A Heat Treatment Practice for Sustainable Environment

2017 ◽  
pp. 147-158
Author(s):  
Muhammad Hafizuddin Jumadin ◽  
Bulan Abdullah ◽  
Muhammad Hussain Ismail ◽  
Siti Khadijah Alias
Keyword(s):  
Heat Treatment ◽  
Treatment Practice ◽  
Sustainable Environment ◽  
Water Based

Permanent Mold Casting Practice and Microstructure and Mechanical Properties of Thin-Sectioned ADI Casting

2007 ◽  
Vol 26-28 ◽  
pp. 531-534
Author(s):  
B.M. Moon ◽  
Bong Hwan Kim ◽  
Je Sik Shin ◽  
Sang Mok Lee
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Ductile Cast Iron ◽  
Treatment Temperature ◽  
Chemical Compositions ◽  
Permanent Mold ◽  
Permanent Mold Casting ◽  
Treatment Practice ◽  
Mold Casting ◽  
Si Content

For thin-walled casting development of austempered ductile iron (ADI), permanent mold casting and accompanied heat treatment practice were systematically investigated to suppress and/or remove chill defects of ductile cast iron (DCI) with various thickness of 2 to 9 mm and to ensure mechanical properties of the final ADI casting. Si content was increased up to 3.8% to reduce the chill formation tendency under a high cooling rate. The residual Mg content remarkably affected the nodule count, while the nodule size and spherodization were proven to have weak relationships. Austenitizing process followed by austempering was very sensitive to chemical compositions (Si and Sn) and heat treatment temperature. As a practical application, the steel bar coupler for a structural frame was tried to produce without subsequent machining.

Optically adjustable nanocomposite electrochromic film WO3/rGO to control light transmission and protection from electromagnetic radiation

2020 ◽  
pp. 85-96
Author(s):  
A. V. Shchegolkov ◽  
I. D. Parfimovich ◽  
F. F. Komarov ◽  
A. V. Shchegolkov ◽  
E. N. Tugolukov
Keyword(s):  
Heat Treatment ◽  
Graphene Oxide ◽  
Light Transmission ◽  
Argon Atmosphere ◽  
Nanocomposite Films ◽  
Electromagnetic Properties ◽  
Electrically Conductive ◽  
Reduced Graphene ◽  
Water Based ◽  
Control Light

The paper presents results of studies of the optical and electromagnetic properties of the WO3/rGO electrochromic nanocomposite films obtained by mechanical spraying of a water-based dispersed solution with WO3/GO particles and heat treatment (annealing) at a temperature of 300°C in an inert argon atmosphere for 24 hours. As a result, an electrically conductive phase of reduced graphene oxide rGO and crystalline WO3 were formed.

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