MICROSTRUCTURE AND MECHANICAL PROPERTIES Ti-Cu SINTERED ALLOY WITH VARIATION OF Cu CONTENT (10-20 wt%) AND COMPACTION FORCE FOR IMPLANT APPLICATION

• Main Author: SANTOSO CHANDRA (NIM : 12512037 ), BUDI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26165
• Institution: Institut Teknologi Bandung

Inovation in implant technology is growing faster than ever due to recent lifestyle that demand greater activity than before. Indonesia’s implant demands, which is increasingly huge, still largely fulfilled by means of importing. To this day, there have been several metals which found uses in becoming an implant material. One of the most popular metal to be used is titanium, which popularity comes from its biocompability and its ability to osseointegrate. Recently, scientist found favor in copper for its antimicrobial properties due to increased variety of antibiotic resistant organism (known as Superbug) and the lesser efficiency of antibiotic in implant infection cases. Beside of those two properties, mechanical strength is also needed to be considered in choosing material for implant. From several studies that had been done, it had been found that the increases of copper in titanium causes increase in alloy’s mechanical strength. <br /> <br /> <br /> The study was conducted to produce Ti-Cu sintered alloy that can be used as implant application that needs antimicrobial properties. Titanium and Copper powder with particle size <44 µm was mixed using Planetarium Ball-mill for 1 hour with Cu content 10; 15; and 20 wt%. Mixed Ti-Cu was weighted and then compacted by using force of 40 kN and 60 kN. Samples were then sintered at 950&#730;C for 2 hours. Samples that have been sintered then prepared and conducted microstructure observation using Optical Microscope and Scanning Electron Microscope, testing Energy Dispersive Spectroscopy to determine the forming element of the phase, hardness using Vickers Microhardness, and compression test. Data obtained are microsture from optical microscope and SEM, element composition in the phase, hardness and graphic of stress-strain from compressive strength. <br /> <br /> <br /> The expemerintal results show the phase of Ti2Cu and &#945;-Ti from SEM-EDS analysis. The average grain size and pores of alloys for compaction force 40 kN and 60 kN are 40,85 µm; 15,01% and 39,54 µm; 12,84%. Increasing compaction force give compressive value because produced lesser porous. Ti-10% Cu alloy produce high hardness and compressive strength value because of Ti2Cu precipitated formed which is spread evenly with fine grain size. The highest hardness values obtained by Ti-10% Cu alloy in 60 kN force with a value of 387 HV. At the same time, the highest compressive strength values obtained in Ti-10% Cu in 40 kN force with a value of tensile strength is 1134,85 MPa. <br />