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Temperature being one of the most important parameters of Spark plasma sintering (SPS) and its effects on the microstructures as well as on the physical properties of copper diamond composites fabricated by mechanical mixing of copper with 70 vol.% diamond powders, precoated with 1 wt% chromium has been studied. Experiments were performed at 900°C, 1000°C and 1100 °C for 10 minutes under 50 MPa. The results reveal that sintering temperature highly influences the copper/diamond interface bonding and microstructures. The composite’s properties like thermal conductivity (T.C), specific heat (Cp), diffusivity (Dff) and relative density (ρr) were also highly influenced by temperature variations. Except the relative density, all the other properties increased respectively with increasing sintering temperature.

During present investigation, five plant species infected with pathogenic rust fungi were collected. Among these, Lolium persicum for Puccinia striiformis var. striiformis, Melica persica for P. poarum, Bothriochloa ischaemum for P. cesatii, Festuca pratensis for P. coronata var. himalensis and Sonchus asper for P. sonchi are reported as new host plants for these rust fungi in Pakistan., {"references":["Usman, M., Sadiqullah, Afshan, N.S., Niazi A.R. and Khalid, A.N. 2016. New host records for Pathogenic Fungi in Pakistan, Science International (Lahore), 28 (3): 3083-3087."]}