METHOD FOR JOINT OF METALS AND ALLOYS Russian patent published in 1995 - IPC

FIELD: glue joint. SUBSTANCE: before contact surface are prepared preliminary, then glue composition is applied. Said composition contains polycarbosilane having molecular weight not less 700; polyorganosilazane having molecular weight not less 900, content of dry precipitate being not less 80% ; powder filler and hardening agent. Said composition is hardened within 0.5-3.0 h at 150-400 C, the process is followed by heat treatment. This process is carried out within 0.3-1 h at 700-1600 C in atmosphere of nitrogen, argon and helium. Ratio of mentioned above components (mass %) is as follows: polycarbosilane 5-20, polyorganosilazane 5-20, hardening agent 0.5-3.0, powder filler the rest. Aluminium nitride, or silicium nitride, or boron nitride, or titanium nitride or silicium carbide, or boron carbide, or titanium carbide, or silicium oxide, or aluminium oxide, or yttrium oxide, or zirconium oxide, or metal or alloy being similar to contacted metal or alloy is used as mentioned above filler. Peroxide of dicumyl or benzoyl peroxide, or tret-butyl peroxide, or lauryl peroxide is used as mentioned above hardening agent. EFFECT: improves strength of joint. 3 cl, 1 tbl