Покращення властивостей алюмінію шляхом додавання карбіду вольфраму методом порошкової металургії

Physics and Chemistry of Solid State Pub Date : 2024-02-29 DOI:10.15330/pcss.25.1.203-211

Z. N. Majeed, S.Y. Darweesh, A. Fadhil, A. A. Aziz

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Abstract

Powder metallurgy is a usable technique with multiple industrial applications. The first reinforcement material (Al2O3) was used at a constant rate 10wt.%, while the second reinforcement material (tungsten carbide (WC) was used at different rates (0,5,10,15,20wt.%), and the base material is (Al). The three powders were ground together for two hours, and then they were poured into the mold. The compaction process was done with a hydraulic press at (5) tons for one minute. The resulting samples had green density, requiring a thermal sintering process in order to increase their durability and hardness. The sintering process was performed at 560°C for only two hours. Then, structural examinations (scanning electron microscope (SEM) and mechanical examinations (Brinell hardness, compressive strength, and wear) were performed on the sintered samples. The results showed that the best reinforcement rate was 20%, and after thermal sintering, the best Brinell hardness was 146.72 HB, with the highest compressive strength of 45.33MPa, while the lowest wear rate was 1.18×10-8g/cm.

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通过粉末冶金添加碳化钨改善铝的性能

粉末冶金是一种可用于多种工业领域的实用技术。第一种增强材料（Al2O3）的使用率为 10%，第二种增强材料（碳化钨（WC））的使用率为 0、5、10、15、20%，基体材料为（Al）。三种粉末一起研磨两小时，然后倒入模具中。压实过程用液压机以（5）吨的压力压实一分钟。得到的样品密度较低，需要进行热烧结处理，以提高其耐久性和硬度。烧结过程在 560°C 温度下进行，仅持续两小时。然后，对烧结样品进行了结构检查（扫描电子显微镜）和机械检查（布氏硬度、抗压强度和磨损）。结果表明，最佳强化率为 20%，热烧结后的最佳布氏硬度为 146.72 HB，最高抗压强度为 45.33MPa，最低磨损率为 1.18×10-8g/cm。

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Physics and Chemistry of Solid State

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