Diffusion bonding SiC or Si₃N₄to Nimonic 80A

Hot Isostatic Pressing

“…structure results in an even higher CTE than for ferritic steels). When rigidly joined, thermally induced strains result in extreme residual stresses that frequently cause fracture in the joint or extending some hundred micrometers into the ceramic; (see Yamada et al, 1987 andR. Larker et al, 1989).…”

“…The often proposed solutions of changing the composition from the metal side through ductile metal interlayers such as nickel or copper (see Yamada et al, 1987;Brito et al, 1989;Frisch et al, 1991), and/ or refractory metals such as tungsten, molybdenum, tantalum, niobium or hafnium (see Suganuma etal., 1986;Yamada et al, 1987;Brito et al, 1989;Frisch et al, 1990 are, unfortunately, difficult to protect against fatigue andoxidation, respectively (Pejryd, 1992). The low-expansion characteristics of Invar and Kovar are restricted to relatively low temperatures (below 200 °C and 300 °C, respectively).…”

The effect of the welding temperature on the weldability in diffusion welding of martensitic (AISI 420) stainless steel with ductile (spheroidal graphite-nodular) cast iron

“…Specimens were joined with diffusion welding process to impede possible structural joining failures regard to the strength failure at interface [8]. The effect of welding temperature on the weld integrity, properties and morphology in diffusion welding of martensitic stainless steel with nodular cast iron, aimed in this study.…”