Abstract
The bulk resistivity as a function of composition has been measured for TiBx, ZrBx, HfBx and TiSix and ZrSix (0 ≤x ≃ 2) samples. The results are discussed in conjunction with the metallurgical characteristics of the five systems. The diboride phases generally have low resistivities which are relatively insensitive to changes in boron composition. In the case of the Ti-B system the minimum resistivity occurs at a boron composition below that required for the diboride phase. In contrast to the boron systems, pronounced variations in electrical resistivities occur in the Ti-Si and Zr-Si systems with sharp peaks at about the compositions Ti5Si3 and Zr5Si4.
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