Influence of Joining Interlayer on Impact Damage to Laminated Boron Carbide Ceramics

E-ISSN： 1744-7402|12|6|1217-1229

ISSN： 1546-542x

Source： INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, Vol.12, Iss.6, 2015-11, pp. : 1217-1229

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

Impact damage of laminated B4C ceramic samples was investigated using four types of aluminum sheets — without holes and with 25 4‐, 8‐, and 25‐mm‐diameter holes — at joining ratios of 100, 94, 76, and 45%. Four 1‐mm‐thick B4C ceramics plates were laminated using three aluminum sheets of the same type and joined at 700°C in vacuum. In impact damage tests using spherical SUJ‐2 projectile with a diameter of 4 mm with a velocity of approximately 300 ms−1, bulk B4C showed a large conical crack and significant fractures; the conical crack in the laminated samples was smaller than that of the bulk B4C. However, the conical cracks of the laminated B4C with the joining ratio 45 to 96% were of the same size, irrespective of the joining ratios. The total load and induced pressure area on the rear side of laminated samples were smaller than that observed for bulk B4C, and total load and induced pressure area were similar for laminated samples with high and low joining ratios. The maximum pressure on the rear face of laminated B4C samples was higher than that observed for bulk B4C and increased with decreasing joining ratio of laminate interlayer.