| Autor: |
Ibrahim, Ahmed M., Allah, Sabah Mahmoud Aman, Darweesh, Salih Y. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 10/25/2022, Vol. 2398 Issue 1, p1-9, 9p |
| Abstrakt: |
Powder technology is characterized by the production of models with multiple application characteristics in different industries that require strength in durability and light weight such as aircraft parts and internal combustion engines. The current study employs this technology to produce models from a mineral base of aluminum (Al) reinforced with Al2O3 with a fixed rate of 5%, and in different proportions of B4C boron carbide of % (0,5,10,15,20). The preparation process was conducted by mixing the powders for three consecutive times (2,4,6) hours with a homemade mill containing steel powder and steel balls. Hydraulic press is used to generate samples at a pressure (100 bar) and for a time of one minute; the samples produced from the mold are of green density and require a sintering process for the purpose of increasing the hardness and durability. The physical characteristics of the samples included (Bulk density and true porosity). The wear rate was studied and the samples produced good results after the sintering procedure at six hours of milling. The results showed a bulk density of (2.128g/cm3), a true porosity (9.98%) and lower wear rate of (1.59×10-8 g/cm). It was thus found that the best grinding time that produced good physical and mechanical properties is six hours, and the best strengthening ratio is 20% B4C when sintering at 560°C. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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