Compressive creep of SiC whisker/Ti₃SiC₂ composites at high temperature in air

Abstract

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Short SiC fiber/Ti3SiC2 MAX phase composites: Fabrication and creep evaluation

“…The morphology of starting Ti 3 SiC 2 powder and chopped SiC f is shown in Figure 1A,B. The XRD (Figure 1C) shows a basal texture on the top surface is similar to that of monolithic material 11 . The degree of basal plane alignment may have been hindered by the presence of chopped SiC f .…”

“…Lagos et al 10 reinforced Ti 3 SiC 2 with carbon fibers but the resulting composite had a poor bending strength due to pores acting as flaws being a result of the high fiber content. Dash et al reinforced Ti 3 SiC 2 with SiC whiskers and thereby reduced the creep rates by two orders in magnitude 11 . The present work presents an investigation of creep response of chopped SiC f fibers reinforced Ti 3 SiC 2 MAX phase composites for potential use in high temperature load bearing applications.…”

“…Dash et al reinforced Ti 3 SiC 2 with SiC whiskers and thereby reduced the creep rates by two orders in magnitude. 11 The present work presents an investigation of creep response of chopped SiC f fibers reinforced Ti 3 SiC 2 MAX phase composites for potential use in high temperature load bearing applications. The reinforcement of SiC f is in a macroscale as compared to the SiC whisker reinforced Ti 3 SiC 2 which is in microscale.…”

Processing of MAX phases: From synthesis to applications

“…210,211 In the case of Ti 3 SiC 2 reinforced with SiC fibers or SiC whiskers, the creep resistance at temperatures up to 1300°C was improved up to two orders of magnitude. 212,213 Furthermore, addition of 10wt% of short SiC fibers into Cr 2 AlC enhanced the tribological response, specifically a reduction of 20% in the friction coefficient and up to 80% in the wear rate. 116 MAX phases have also been added into metallic matrices to improve some properties.…”

“…No reactions have been reported for Ti 3 SiC 2 and Cr 2 AlC with SiC fibers at high temperature, 116,208 as well as for Ti 2 AlC, Ti 3 AlC 2 , and Cr 2 AlC with Al 2 O 3 fibers 210,211 . In the case of Ti 3 SiC 2 reinforced with SiC fibers or SiC whiskers, the creep resistance at temperatures up to 1300°C was improved up to two orders of magnitude 212,213 . Furthermore, addition of 10wt% of short SiC fibers into Cr 2 AlC enhanced the tribological response, specifically a reduction of 20% in the friction coefficient and up to 80% in the wear rate 116 …”