【摘要】 本文研究了等离子涂层应力-应变关系的测量方法及计算方法,提出涂层弯曲破坏过程中的最大应力可用σ=2(m+2)/(b·h~2)P·a这一修正公式计算;并对金属添加剂对涂层性能的影响进行了研究,探讨了涂层破坏机理和改善陶瓷涂层脆性的途径。更多还原

【Abstract】 This paper deals with the measurement of the stress-strain relation of plasma sprayed cermet coatings,and the calculating method of stress and strain. It is found that the maximum fracture stress during bending test can be calculated by using the modified formula σ=2(m+2)P·a/b·h~2.The effect of the metal additives on coating properties, the fracture mechanism and the measures for improving brittleness of plasma sprayed cermet coatings are also discussed in the paper.更多还原