TiB2-B4C KOMPOZİT TOZLARININ KARBÜR BORLAMA YÖNTEMİYLE ÜRETİLMESİ

Abstract

ÖZ PRODUCTION OF TiB 2 -B 4 C COMPOSITE POWDERS BY THE CARBIDE BORONIZING PROCESS ABSTRACTIt is clear that converting the minerals to advanced technology products has a great importance, when Turkey has the 80% of whole boron reserves of world. When viewed from this aspect, investigating production conditions of borides which are synthesised by using metal oxides and boron oxides produced from domestic resourses is the main problem. Titaniumdiboride (TiB 2 ) is a boride has an importance for applications comprising wear and high temperature. B 4 C is one of the advanced technology ceramics of present day since it has high melting point, hardness, wear resistance, chemical stability and low density. And it is also keeps its rigidity even at elevated temperatures such as 13000 o C. In this study, it is aimed to fabricate TiB 2 -B 4 C and ZrB 2 -B 4 C composite powders which have high melting point, hardness and excellent chemical stability. Therefore, it is planned that gaining TiB 2 -B 4 C composite powder by chemical reaction with boronising the TiC and amorphous boron powder which is easily provided instead of the adding difficultly provided TiB 2 in B 4 C powder.

Production of Aa7075/B4c Composite Materials by Semi-Solid Stirring Method

“…The B4C material is among the advanced-technology ceramics of today with its characteristics such as high melting temperature, high hardness, high abrasion strength, low density and superior resistance against chemical substances. Its hardness values do not decrease even at temperatures around 1300°C [23]. Table 3 shows the properties of B4C reinforcing materials.…”