Premium
Strength of a Hi‐Nicalon™/Silicon‐Carbide‐Matrix Composite Fabricated by the Multiple Polymer Infiltration‐Pyrolysis Process
Author(s) -
Takeda Michio,
Kagawa Yutaka,
Mitsuno Shiro,
Imai Yoshikazu,
Ichikawa Hiroshi
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01960.x
Subject(s) - composite material , materials science , porosity , composite number , ultimate tensile strength , silicon carbide , compressive strength , polymer
A woven‐fabric Hi‐Nicalon™‐fiber reinforced SiC‐matrix composite has been fabricated by using a multiple polymer infiltration‐pyrolysis (PIP) process. The three‐point bend strength, at room temperature, of the composite is examined as a function of total porosity of the composite. The porosity of the composite decreases as the number of PIP cycles ( N ) increases. Both the proportional‐limit load and the maximum load in the three‐point bend test increase as N increases. A compressive fracture mode is observed for N < 10 (total porosity of >10%), and a tensile fracture mode is observed for N greaterthan equal to 10 (total porosity of lessthan equal to10%). For the composite with N = 14, with a total porosity of 8 vol%, a proportional‐limit stress of 410 MPa and a maximum stress of 600 MPa are achieved.