The Ti-Si-C System (Titanium-Silicon-Carbon) Debashis Bandyopadhyay (Submitted September 12, 2003; in revised form June 15, 2004) In the present article different isothermals of Ti-Si-C system at temperatures ranging from 1250 to 2877 °C, previously reported by [1966Bru], [1989Tou], [1991Wak], and [1993Sei], were assessed and redrawn on the basis of the recently reported binary alloy phase diagram of Ti-Si, Ti-C, and Si-C. 1. Ti-C System The assessed phase diagram of Ti-C system shown in Fig. 1 is taken from [1998Oka]. Other recent work done on this system has been published by [1993Oht], [1995Alb], [1996Sei1], and [1996Jon]. The system consists of two ter- minal solids -Ti and -Ti, a refractory monocarbide TiC. Other phases present are liquid and graphite (C). Two eu- tectic reaction and one peritectoid reaction appear in this system at 1646, 2776, and 920 °C, respectively. Crystal structure data shown Table 1 are taken from [Massalski1]. 2. Ti-Si System The equilibrium phase diagram of Ti-Si binary system shown in Fig. 2 is taken from [1996Sei2]. An important contribution is from [1989Vah]. The Ti-Si system is char- acterized by three eutectic and two peritectic reactions. The different intermediate phases present in this system are Ti 3 Si, Ti 5 Si 3 , Ti 5 Si 4 , Ti 6 Si 5 , TiSi, and TiSi 2 . Crystal struc- ture data shown in Table 2 are taken from [Massalski1]. 3. Si-C System Very few experimental data are available on Si-C binary system. The assessed phase diagram in Fig. 3 is taken from [1992Luk]. This system includes one peritectic reaction and Debashis Bandyopadhyay, Birla Institute of Technology and Sci- ence, Pilani, Rajasthan-333031, India. Contact e-mail: bandy@bits- pilani.ac.in. Fig. 1 Ti-C phase diagram JPEDAV (2004) 25:415-420 DOI: 10.1361/15477030420890 1547-7037/$19.00 ©ASM International Basic and Applied Research: Section I Journal of Phase Equilibria and Diffusion Vol. 25 No. 5 2004 415