Browsing Researchers by Author "kahtan@unimap.edu.my"
Now showing items 1-7 of 7
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Comparison of liquid phase sintering and Cu-melt infiltration methods to consolidate 80W-Cu composite using nickel as sintering activator
Hafed, Ibrahim; Azizan, Aziz, Assoc. Prof. Dr.; Azmi, Rahmat, Prof.; Kahtan Sadiq, Muhammed, Dr. (Trans Tech Publications, 2013)In this article, studies were conducted to evaluate the densification of W- Cu sintered compacts produced using two methods; liquid phase sintering (LPS) and combination of liquid phase sintering and liquid infiltration ... -
The effect of iron fillings waste contents on the attenuation level of anti-radiation shielding concrete
Ali Basheer, Azeez; Kahtan Sadiq, Muhammed, Dr.; Mohd Mustafa Al-Bakri, Abdullah; Azmi, Rahmat, Prof. (Trans Tech Publications, 2013)Shielding concretes of different iron filling contents were assessed for their anti radiation attenuation properties. The measurements have been performed by using gamma spectrometer of NaI (Tl) detector, the sources were ... -
The effect of rotational speed on flow behavior and weld properties in friction stir welding of pure aluminum
Hassan I., Dawood; Kahtan Sadiq, Muhammed, Dr.; Zurida, Abdul Wahab (Trans Tech Publications, 2013)Friction stir welding is a solid state green welding technique. Its key benefit is to allow welding of aluminum that cannot be readily done by fusion arc welding. In this study, two pure aluminum strips of 2mm thick were ... -
The effect of various waste materials' contents on the attenuation level of anti-radiation shielding concrete
Ali Basheer, Azeez; Kahtan Sadiq, Muhammed, Dr.; Mohd Mustafa Al-Bakri, Abdullah; Kamarudin, Hussin, Brig. Jen. Dato' Prof. Dr.; Sandu, Andrei Victor; Rafiza, Abdul Razak (MDPI, Basel, Switzerland, 2013)Samples of concrete contain various waste materials, such as iron particulates, steel balls of used ball bearings and slags from steel industry were assessed for their anti-radiation attenuation coefficient properties. The ... -
The role of direct chilling, retrogression and reaging treatment on mechanical properties of high strength aluminum alloy
Naeem, Haider T.; Kahtan Sadiq, Muhammed, Dr; Khairel Rafezi, Ahmad, Dr.; Azmi, Rahmat, Prof. (Trans Tech Publications, 2013-03)The effect of retrogression and reaging heat treatment on microstructure evolution andmechanical properties of 7075 Al alloy in direct chilling casting process was investigated. The subsequent heat treatment process comprised ... -
The role of the activator rich-W interboundary layer on liquid phase sintering of W-pre-alloy bronze composites of Fe and Co additions
Kahtan S, Muhammed, Dr.; Azmi, Rahmat, Prof. (Elsevier B.V., 2012-11)In this study, the effects of 1-3 wt.% Fe and Co additions on the sintering of W 40-80wt.%-pre-alloy bronze Sn 10 wt.%-Cu compacts were examined. The isothermal part of the sintering process was conducted at temperatures ... -
Self-compacting high density tungsten-bronze composites
Kahtan S, Muhammed, Dr.; Azmi, Rahmat, Prof.; Azizan, Aziz, Assoc. Prof. Dr. (Elsevier, 2013-07)Green compacts of W–bronze were encapsulated in shells of bronze powder, placed in a ceramic mold and sintered in alumina tube furnace at 1150 °C. Throughout the sintering cooling stage the differential coefficient of ...