Si-Al-O-N Ceramics, Structure and Properties

Çelik, Ali; Turan, Servet

doi:10.1016/b978-0-12-818542-1.00082-5

Cited by 1 publication

(2 citation statements)

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“…Their excellent wear resistance and chemical inertness, particularly at high temperatures, making them valuable for a wide range of applications, with a particular focus on metal machining. 1 High-tech ceramics have been used in metal machining for over three decades. 2 Especially, SiAlON and Al 2 O 3 -SiC w ceramics have been widely used for machining nickel-based superalloys.…”

Section: Introductionmentioning

confidence: 99%

“…SiAlON ceramics demonstrate exceptional mechanical, thermal, and chemical properties, making them suitable candidates for structural applications. Their excellent wear resistance and chemical inertness, particularly at high temperatures, making them valuable for a wide range of applications, with a particular focus on metal machining 1 . High‐tech ceramics have been used in metal machining for over three decades 2 .…”

Section: Introductionmentioning

confidence: 99%

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Development of β‐SiAlON/12H composite and their cutting performance on Inconel 718 turning

Kula,

Kara

2024

Int J Applied Ceramic Tech

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In this study, the development of β‐SiAlON/12H polytype composites for the turning of Inconel 718 was investigated. Various sintering additives, including La2O3, Sm2O3, Y2O3, and their combinations, were used to obtain β‐SiAlON/12H polytype composites. It was found that β‐SiAlON/12H polytype composite with a reasonable amount (12%–14%) of the 12H phase was developed by using La2O3–Y2O3 as codopant and Sm2O3 as a single dopant. The presence of Y2O3 led to a substantial amount of undesired α‐SiAlON formation due to its smaller cation size. Although adjusting the AlN/Al2O3 ratio in the composition could entirely prevent α‐SiAlON formation, this approach is only applicable to Sm2O3 dopant due to its larger cation size. β‐SiAlON/12H cutting tools have significantly less flank wear than a commercial β‐SiAlON and quite comparable to Al2O3–SiCw, which is widely used in Inconel 718 turning. No significant differences in cutting performance were observed between cutting tools made of β‐SiAlON/12H obtained by using different dopants.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%