| 摘要 |
FIELD: metallurgy; plasma spraying of coats; mechanical engineering; prosthodontics. ^ SUBSTANCE: coat is formed by flow of particles due to spraying of rod material molten in plasma jet. Spraying of part of rod material is performed by imparting ultrasonic oscillations to it. Current of plasmatron arc and distance between axis section of nozzle and axis of rod material are equal to (120-150)A and (10-15) mm, respectively. Rate of delivery of rod material to plasma jet depends on condition of inverse ratio of rate of spreading of molten material front and retaining of layer of melt on end face of rod material which does not exceed half length of standing wave of ultrasonic oscillations. Article to be coated is subjected to ultrasonic oscillations in required direction, thus ensuring continuous control of properties of coat from inner layers to outer ones. ^ EFFECT: enhanced adhesion-cohesion properties of coats; improved quality of articles. ^ 4 cl, 1 dwg, 3 tbl |
