Symposium on metallurgy and technology of refractory metal alloys—A state-of-the-art review

Machlin, I.

doi:10.1007/bf03378741

Cited by 2 publications

(3 citation statements)

References 10 publications

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“…It is clear from the spectra that it has characteristic NbSi2, Nb5Si3 and M5Si3 (M = Nb, Fe and Cr) phases. These findings are in accordance with those reported in the relevant literature [4,6]. Fig.…”

Section: Resultssupporting

confidence: 93%

“…Among various niobium alloys, C-103 (Nb-10Hf-1Ti) has exceptional combination of properties such as ease of workability and fabricability. However, these alloys display very poor oxidation resistance and oxidizes easily above about 250 °C with oxidation rate rising sharply above 500 °C [4], and tend to form loose oxide scales leading to severe dimensional degradation at higher temperatures in air [5,6].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Low Temperature Heat Treatment for R512E Coated C-103 Nb Alloy

Dilawary

Khalid²,

Ali³

et al. 2021

KEM

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The article aims to investigate the feasibility of oxidation protection imparted to C-103 Nb-based alloy by fused slurry silicide coating of R512E (60Si20Fe20Cr) carried out at lower temperature (1200 °C) for higher dwell time i.e. 12 hours. The findings reveal that the coating treated can impart sufficient oxidation resistance the alloy, which may withstand the desired application conditions wherein oxidation protection for smaller time period is needed. Moreover, this treatment is not found to deteriorate other mechanical properties of the alloy in 'As coated' condition.

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Section: Resultssupporting

confidence: 93%

Section: Introductionmentioning

confidence: 99%

Effect of Low Temperature Heat Treatment for R512E Coated C-103 Nb Alloy

Dilawary

Khalid²,

Ali³

et al. 2021

KEM

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show abstract

“…

is a refractory metal with good mechanical and thermal properties, such as a high melting point (2896 K) and thermal conductivity (134 W m À1 K À1 ). [1,2] Mo and its alloys are among the materials being explored for use under high operating temperatures in power electronics, aviation engines, and nuclear power generation applications. [3][4][5] TZM is a Mo alloy which nominally contains 0.5 wt% titanium, 0.08 wt% zirconium, and between 0.01 to 0.04 wt% carbon.

…”

mentioning

confidence: 99%

Laser Powder Bed Fusion Additive Manufacturing of Mo and TZM Exoskeleton with Cu Infiltration for New Heat Sinks Configuration

Ramakrishnan,

Kumar,

Hudon

et al. 2023

Adv Eng Mater

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This study reports the fabrication and characterization of molybdenum (Mo) metal and titanium‐zirconium‐molybdenum (TZM) alloy exoskeletons with honeycomb cavity structures (HCS) that are infiltrated with oxygen‐free high conductivity (OFHC) Cu under an inert atmosphere as a potential replacement for Cu‐Mo‐Cu laminate in heat sink applications for power electronics semiconductors like GaAs. The thermal expansion behavior and the thermal loading of the starting Mo and TZM structures, and of the Cu‐infiltrated parts are evaluated. The fabricated Mo and TZM structures with density >99% and Mo‐based heat sinks with improved CTE (6.6 × 10−6 K−1) when compared to conventional Cu‐Mo‐Cu laminated heat sinks (CTE = 7.6 × 10−6 K−1). The new Mo and TZM structures promise superior performance due to their closer CTE to that of GaAs and similar semiconductors (CTE = 5.7 × 10−6 K−1). Exposure to temperatures up to 1073 K did not affect the Mo microstructure due to the inherent resistance to recrystallization, while exposure to 1373 K did reduce hardness. In contrast, TZM exoskeletons showed resistance to recrystallization even at 1373 K. The fabricated composite heat sinks showed thermal diffusivity (≈61 × 106 m2 s−1) that is within the upper limits of those reported for commercial laminated heat sinks (45 to 65 × 106 m2 s−1).

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Symposium on metallurgy and technology of refractory metal alloys—A state-of-the-art review

Cited by 2 publications

References 10 publications

Effect of Low Temperature Heat Treatment for R512E Coated C-103 Nb Alloy

Effect of Low Temperature Heat Treatment for R512E Coated C-103 Nb Alloy

Laser Powder Bed Fusion Additive Manufacturing of Mo and TZM Exoskeleton with Cu Infiltration for New Heat Sinks Configuration

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