Experimental study on the influence of binders on plastic deformation during sintering of cubic boron nitride powder under high pressure and high temperature
Abstract
In this work, sintered polycrystalline cubic boron nitride (cBN) compacts, with titanium carbonitride (TiC0.7N0.3) and titanium nitride (TiN), respectively, as binders, were prepared at temperature of 1450C and pressure of 5.5 GPa during 3 minutes, and the influence of binders on the plastic deformation of cBN powder due to the sintering process was experimentally investigated by X-ray diffraction (XRD) analysis. It was shown that the sintered compact with titanium carbonitride as a binder displays more intense plastic deformation of cBN grains than that with titanium nitride binder. This result indicated that if the binders are different, then products formed during sintering of cBN powders under high pressure and high temperature (HP-HT) are different so that the stress concentration at the cBN grain boundaries and a pinning effect, reducing the mobility of the dislocations and preventing annealing, are different in two cases.
Turn this paper into a lesson
ArcXiv compiles a structured reading guide from this paper's metadata: plain-English importance, contributions, prerequisite concepts, which sections to read first, flashcards, and a quiz. Grounded in the abstract, never invented.