| 摘要 |
FIELD: production processes. ^ SUBSTANCE: in compliance with the proposed method, copper matrix is pressed at 100 to 300 MPa and sintered at 5640 to 680C for 1 to 2 h in protective-reducing gaseous atmosphere to produce apparent-porosity structure. Nonstructural component is introduced therein in vacuum impregnation of the matrix with suspension of refractory material nanoparticles in glycerin-based protective fluid at 1 to 10 kPa. Aforesaid protective fluid is removed at 80 to 95% of its boiling point. Finally, final sintering is effected at 810 to 1020C for 1 to 2 h in protective-reducing gaseous atmosphere. ^ EFFECT: simplified process, expanded technological performances, improved physical-mechanical properties. ^ 3 cl, 1 tbl, 1 ex |
