Corrosion characterisation of Al-Cu reinforced in-situ TiB2

• Main Authors: Ramli, Rosmamuhamadani, Sulaiman, Shamsuddin, Mohamed Ariff, Azmah Hanim, Ismail, Mohd Idris Shah, Talari, Mahesh Kumar, Md Yahaya, Sabrina
• Format: Conference or Workshop Item
• Language: English
• Published: EDP Sciences 2016
• Online Access: http://psasir.upm.edu.my/id/eprint/50093/1/matecconf_icongdm2016_01001.pdf; http://psasir.upm.edu.my/id/eprint/50093/; http://www.matec-conferences.org/articles/matecconf/abs/2016/41/matecconf_icongdm2016_01001/matecconf_icongdm2016_01001.html

Aluminium (Al) based in-situ metal matrix composites (MMCs) have better properties and performance compared to ex-situ MMCs. In this research, aluminium-copper (Al-Cu) alloy was reinforced with 3 and 6wt.% titanium diboride (TiB2). Al-MMCs has been fabricated with salt route reaction process at 800 °C via potassium hexafluorotitanate (K2TiF6) and potassium tetrafluoroborate (KBF4) salts. Hardness vickers tester and Gamry-Electrod Potentiometer were used to characterize the hardness properties and to determine the corrosion rate of Al-Cu alloys. From results obtained, increased TiB2 contents will increase the hardness of Al-Cu alloys. Increased of TiB2 contents also will increase the corrosion rate of Al-Cu alloys. Al-Cu with 3wt.%TiB2 gave the good properties of corrosion when the wear rate recorded the lowest value compare to Al-Cu alloy itself and 6 wt.% TiB2. The corrosion rate of Al-Cu with 3wt.TiB2 was 16.15, while Al-Cu and Al-Cu-6wt%TiB2 were 22.5 and 58.7 mm/y respectively.