The invention is a method of binding compound materials of the C / SiC and C / C, which belongs to the technology field of binding heterogeneous materials. The
processing procedures are as following: 1. The surface of the e compound materials of the C / SiC and C / Cis pretreated, which comprise the surface of the connecting are
grinding, cleaning, vacuum biscuit firing, preparation of double-layer
metal film and microvacum heat treatment and so on. 2. The
transition layer of the connecting area
surface gradient of the compound materials of the C / SiC is coated and sintered. 3. The compound materials with the gradient
transition layer as the
felted phase is brazed with the
metal in vacuum. The invention is characterized in that the gradient
transition layer is directly used as the materials that bind the compound materials with the
metal; the gradient transition layer is double-layered or multilayered (sub-layered) structure; from the inner
basal body to the outer part of the compound materials, the melting points of active
brazing alloy adopted by each sub-layer gradually lower, the coefficient of heat expansion that adjust
volume percentage composition gradually lower and the coefficient of heat expansion of the sub-
layers gradually rise. The
brazing ceramic metal connecting piece of the invention has good strength,
air tightness and wide application field, which is suitable for various non-metallic fibers, such as ceramics of SiC, Si3N4, Al2O3, AlN and so on and applicable for connecting the
ceramic matrix compound materials with particulate reinforced with the metal.