Abstract
Hot isostatic pressing (HIPing) is investigated as a technique for joining the cermet WC‐15% Co to itself. Encapsulation of the specimens prior to HIPing was carried out using steel encapsulation, glass encapsulation, and self‐encapsulation. The bonds were evaluated using a four‐point‐bend method. It is shown that the glass and steel encapsulation methods have a number of inherent problems which make them inappropriate for near net shape processing. In contrast the novel self‐encapsulation method, described for the first time in this communication, is both simple and effective, producing joined material with bulk strength. The concept of self‐encapsulation is potentially widely applicable for joining composite materials.
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